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308 Cards in this Set

  • Front
  • Back

How do you classify foot type?

Navicular tubercle position to the Feiss Line

What is the feiss line?

Line from the plantar surface of the head of the 1st MT to apex of medial malleolus

When should foot type be measured?

During weight bearing (Standing)



[Because arch changes when weight bearing]

Where is the navicular tubercle during a pes planus foot?

The navicular tubercle located below feiss line

The pes planus foot is a _________ medial longitudinal arch, _______ forefoot and ______ rearfoot

*Low or bulging


*Abducted


*Everted

The pes planus foot is similar to pronation or supination?

Pronation

What does congenital pes planus foot mean?

Hereditary

What is acquired pes planus foot?

Suffered an injury

How does one have acquired pes planus foot?

*Rupture or weakness of planatr fascia, plantar ligaments, spring ligaments, tibialis posterior or anterior



Fatigue or damage to static stabilizers of arch leads to PPF

What is the too many toes sign?

Since forefoot is abducted in the pes planus foot, so when stand behind someone who is not wearing shoes in their neutral stance you can see 3-5 toes because the forefoot is abducted

What does an everted rearfoot look like?

(See too much for the forefoot)

(See too much for the forefoot)

For people with acquired pes planus they might need support and assistance with what?

Straight leg heel raise

What is an indicator of pronation?

Navicular drop

What is navicular drop

The distance the navicular tuberosity moves in standing as the subtalar joint is allowed to move from its neutral to relaxed position 
 
Get the person to stand. Then palpate the talus and adjust foot till feel equal medial and lateral heads and s...

The distance the navicular tuberosity moves in standing as the subtalar joint is allowed to move from its neutral to relaxed position



Get the person to stand. Then palpate the talus and adjust foot till feel equal medial and lateral heads and say that is the neutral position. Then have the subject relax and see if the foot collapses then meausre where the navicular was and see how much of a difference that drop was

What does rigid pes planus foot mean?

That the pes planus there for both weight bearing and non-weight bearing

What does flexible pes planus mean?

That pes planus only there during weight bearing

Can you correct a rigid pes planus foot?

No, but can cushion

Do you have increased or decrease shock absorbing capacity with a rigid pes planus foot

Decreased



(When we make contact with the ground we want to go from supination into pronation but if it is arleady in pes planus we don't have the ability to absorb forces through the pronation of gait so forces will be increased up the kinetic chain)

How do you correct for flexible pes planus foot?

Orthotics correction

What are the possible assoications of pes planus foot?

*MT Stress fracture


*Navicular stress fracture


*Knee pain


*Low back pain


*Plantar fasciitis

How do you define PPF with an X-ray?

Looking at calcaneal pitch 
 
"Pitch" = inclination off the calcaneous

Looking at calcaneal pitch



"Pitch" = inclination off the calcaneous

Where is the navicular tuberosity located on a pes cavus foot?

Navicular tuberosity is located above the Feiss Line

Are there more or less people with pes cavus foot?

Less

Pes cavus foot has a _____ medial longitudinal arch, _____ forefoot and _____ rearfoot

*High


*Adducted


*Inverted

The pes cavus is more like pronation or supination

Supination

Since the pes cavus foot has a higher arch what does that do the stiffness of the foot?

Stiff

If there is a stiffer foot what does that do to the shock absorbing capacity?

Decreased

What are the possible association for the pes cavus foot?

*Claw or hammer toe


*Metatarsalgia


*Plantar fasciitis


*Hypomobile first ray


*Stress fracture of the MTs, tibia and femur

Why can pes cavus foot lead to plantar fasciitis

The foot is rigid and so won't go through pronation as much, plantar fascia gets loaded a lot more

Does the pes cavus foot have a higher or lower calcaneal pitch?

Higher

What does the wet foot test look like for the pes planus foot?

What does the wet foot test look like for a normal foot?

What does the wet foot test look like for the pes cavus foot?

What is hammer toe and claw toe

Hammer toe is differnet than claw toe because the distal interphalangeal joint is extended as opposed to flexed

Hammer toe is differnet than claw toe because the distal interphalangeal joint is extended as opposed to flexed

What is the Morton's Foot (Mortion's Toe)?

Shorted 1st MT so it looks like the 2nd toe is really short

What is the consequence of Morton's Foot?

Increased weight bearing through the 2nd toe and MT which is not designed to do that so it is more suseptible to stress fractures

How much of the population has Morton's Foot/Toe?

10%

What does the plantar fascia do?

Plantar fascia reinforces longitudinal arches of the foot

what is the plantar fascia important for?

Force absorption


Propulsion

Aggravation of the PF can result in _______

Irritatin and inflamation

However many chronic cases of plantar fasciitis does not involve _____, but rather ______

*Active inflammation


*Degeneration of the PF

What is the mechanism of injury for plantar fasciitis?

Repeat stress (overuse) or single traumatic episode

What is baxter's nerve

Possible entrapment of branch of lateral plantar nerve in the porta pedis

How do you differnetiate between plantar fasciitis

If load foot and don't do anything to the knee of hip and it is painful then it is probably plantar fascia



If load foot and nervous system by extending the knee and flexing the hip and feel pain then there is a nerve problem

What is the signs and symptoms of plantar fasciitis?

*Pain localaized at origin of PF (palpation on medial calcaneal tubercle is painful)



*Pain/stiffness upon waking in the morning (because when sleep in supine, feet is plantar flexion for around 8 hrs)



*Heel pain during/after activity



*pain with passive ankle doriflexion



*Pain in DF with passive toe extension (Windlass Effect)

What is the prognosis for plantar fasciitis?

*Conservative treatment is effective for 80% of cases but takes a long time to heal and sometimes greater than a year to feel satisfactory outcome



*Sgns and symptoms can persist for months to years



Do bilateral or unilateral cases of plantar fasciitis respond less favorably

Bilateral



Because probably has to do with the anatomy of the foot

Does rupture (chronic plantar fasciitis) risk increase after corticiosteroid injection?

es



Chronic plantar fasciitis doesn ot always result in rupture and there are people who can rupture the plantar fascia and never exterience ain beforehand

Can plantar fascia rupture occure without prior history

Yes



(For example males greater than 20-25 yrs old who pariticpate in running and jumping type sports)

What are the early conservative treatments for people with plantar fasciitis?

*Stretching of foot/gastroc-soleus complex



*Soft tissue release



*Longitudinal arch taping



*Ice cup massage with foot on stretch (post exercise)

What is the prolonged conservative treatment of plantar fasciitis?

*Prefabricated insoles, heel cups, orthotics (chornic cases)



*Night splint (Locked in 90 degres)



*Corticosteroid injection

What is the agressive, chronic treatment for plantar fasciitis?

*Electoporeal shockwave therapy (after 6 months of conservative treatment) [Powerful ultrasound, uncomfortable hammering on tissue)



*Surgical release (Come in and remve any scar tissue that is impinging on the nerve itself or creating extra pressure in the area)

What is a heel spur?

Exotosis, bony outgrowth of the medial calcaneal tubercle

What is an exostosis

Excessive bone growht that is typically seen on sites with insertion of structures at the origin of short toe flexor

What shape is the heel spur?

Hook shaped

Can the heel spur occur simultaneously with plantar fasciitis?

Yes, but not necessarily causal of each other



Sympotms are similar

What is the signs and symptoms of heel spur?

Gradual onset of symptoms



Pain during heel strike phase of gait

What is the treatment of heel spur?

*Still treat conservatively if at all possible



*Stretching



*Comfortable and supportive footwear



*Heel cups



*Surgery (spur removal or endoscopic plantar fasciotomy

What is the mechanism of injury for the metatarsal fracture?

Can occur with direct or overuse trama

What are the types of fractures for the fifth metatarsal?

*Jones Fracture (Base of the 5th MT)


 


*Stress Fracture (Distal to jones)


 


*Avulsion Fracture (Peroneal brevis avulses off styloid process)

*Jones Fracture (Base of the 5th MT)



*Stress Fracture (Distal to jones)



*Avulsion Fracture (Peroneal brevis avulses off styloid process)

What is the metarsal fracture for the 2nd, 3rd or 4th MT?

march fracture

Is it rare to see a stress fracturei n the 1st MT? why

Yes, because it is such a thick and strong bone

What is the MT shaft fracture's mechanism of injury?

Something dropped on the foot or the foot has twisting on it

What is the 5th MT suseptible to fractures?

Because the blood supply varies throughout the bone itself



When fractures are through the base of the 5th MT, the blood supply also affected so healing is much mroe complicated

What is the signs and symptoms of MT stress fractures?

Localized bone pain (dull pain that can be present at rest but increases with activity



Can progress to a gross fracture if not treated



Need to get patient to rest right away

What is the signs and symptoms of acute MT fractures

*Intense pain (may be unable to Weight bear)



*Crepitus (Assess for this during palpation --> Crunching sensation)



*Acute onset of swelling over fx site

What is the treatment of avuslsion fractures

Immobilization and non-weight bearing for four weeks

What is the treatment for jones fracture?

Immobilization and non weightbearing



Surgery (internal fixation with a screw)



Recovery for 8+ weeks

What is the treatment of a stress fracture?

*Rest



*PWB with fixed cam walker boot



*Bone growth stimulator



*Avoid aggressive return and resulting gross fracture

Where is the lsfranc joint

Tarso-metatarsal joint

What are the type of injuries from a lisfranc injury?

*Sprain


*Dislocation


*fracture-dislocation

What is the MOI for a lisfranc injury>

High energy axial loading of foot while distal segment is fixed and that causes a buckling of the join



(IE being stepped on back of the heel with ball of foot planted)

Signs and symptoms for lisfranc injuries?

*Range to from subtle to obvious (pain, swelling, deformity, ecchymosis on plantar surface) of midfoot



*Acute mid-foot injury with pain should have flip to r/o Lisfranc injury



-Lisfranc fracture: 2% of all fracture, but often misdiagnosed

What is the conservative treatment of lisfranc injuries?

Non-weight bearing

What is the surgical treatment of lisfranc injuries?

*Open reduction and internal fixation



*8 weeks NWB (cast/splint)



*Arthrodesis for ligamentous injury (surgical joint fusion) --> Worst case scenario

What is an intermetatarsal neuroma?

Enlargement of that erve

What is morton's neuroma

Typically entrapment of the 3rd common digital (plantar) nerve, located between 3rd and 4th MTs

What is the MOI of Morton's Neuroma

*Prolonged pressure of nerve resulting in formation of fibrotic nodules and edma around the nerve



What the contributors to the prolonged pressure MOI for Morton's Neuroma?

*Excessive pronation



*Improperly fitted shoes

Are women or men more likely to get morton's neuroma?

Women

Is there a high re occurence rate of morton's neuroma?

Yes

What is the signs and symptoms of morton's neuroma?

*Pain in transver (metatarsal) arch of foot, radiating to toes



*Numbeness/paresthesia into the toes



*Increased pain/numbness when pressure is increased in forefoot (standing on toes) or with tight shoes



*Positive: increase in symptoms with metatrsal compression (Squeezing foot)

What positive test is for Morton's Neuroma

Mulder sign

What can you occassionally palpate on the plantar surface of the metatarsal arch for Morton's Neuroma

Nodule

What is the treatment for Morton's Neuroma

*Metatarsal arch pad



*Low dye taping (Widens MT arch)



*Lidocaine/Corticosteroid injection



*footwear modification



*Surgical excision (remove scar tissue around nerve)

What is hallux rigidus?

Stiff great toe

What does hallux rigidus involve

Progressive degeneration of first MTP joint's articular surfaces

Is hallux rigidus often a bilateral or unilateral ocndition?

Bilateral, genetic disposition

What may hallux rigidus progress to

Ankylosed joint (Fused)

What are the signs and symptoms of hallux rigidus

*Stiff 1st ray



*Impacts toe off



*Pain and swelling after/during activity



*Exotosis devlopment possible on dorsal aspect of MTP joint

What are the associations with hallux rigidus

Morton's toe



(People with morton's toe are more suseptible to getting this condition)

What is the treatment of hallux rigidus

*Passive ROM and joint mobilization



*Orthodics to unload the first MTP joint (decrease hyperextension)



*Turf Toe taping (Limiting DF)



*Corticosteroid injection (Quiet down inflammation)



*Surgical intervention (Cheilectomy: Removal of distal portion of MT and exotosis)

What is hallux valgus?

Progressive degeneration and subluxation of the first MTP joint



charactized by the MTP because in over 20 degrees of abduction



"valgus deformity"



Associated with a bunion (exotosis) on medial aspect of the joint

What is the treatment for the hallux valgus?

Taping to increase adduction and limit abduction



Appropriate shoes



Pad between 1st, 2nd, 3rd phalanges



NSAIDS



Surgical intervention: Changing the shape of the foot (reshape of the 1st of MT)



Exosectomy (bunionectomy)



and



Osteotomy (chevron osteotomy at the distal end of MT)

What is turf toe?

Sprain at the 1st MTP joint

what is the mechanism of injury for turf toe

Foot planted, is made to go to dorsiflexion and first toe is hyperextended



Can also involved force walgus or varus of the 1st MTP joint

What is the signs and symptoms of turf toe?

*Pain with toe off during gait or quick stops



*Pain with palpation



*Limited ROM of MTP joint

What is the treatment for Turf toe

*Rest and NWB-PWB in acute stages (cam walker)



*RICE



*Turf toe tapingstrap (stabilize toe)



*Firm shoe inserts or fabricated orthoplast insertW

What are the sesamoids?

Two bones in the tendons of the flexor hallucis brevis tendons that act with the same mechanical advantage as the patellar tendon



They are less stable in the MT groove in extension therefore they have the most forces placed on them during extension

What is the MOI for sesamoiditis?

Overuse injury (in conjunction to poor shoe type) more stress during extension when it's not as stable in the MT groove



May result in stress fracture of seasmoids

What is the signs and symptoms for sesamoidits?

*Pain when "being on toes (IE toe off, high heeled shoes)



*Walk on outside of foot to avoid pressure



*TTP over ball of foot (Under 1st MT head)



*Painful passive extension ROM of 1st MTP joint

What is the treatment of sesamoiditis?

*Padding or orthotics designed to unload the ball of the foot and dissipate forces on sesamoid bone



*Corticosteroid injection



*Surgical excision of sesamoid bones (if chronic pain)

What type of joint is the talocrural joint?

Hinge joint

What is the the angle joint movememnt of the talocrural joint?

Dorsiflexion


Plantarflexion

Is the talus dome wider anteriorly or posteriorly?

Anteriorly

Is the axis of rotation of the talocrural joint oblique or completely horizontal?

Oblique (tilteD)

What is the close packed position of the talocrural joint?

Full dorsiflexion



Talus locked against the fibula and tibula



(Ie mid stance of gait and squatting)

What is the subtalar joint?

Talocalcaneal joint

What movement does the talocalcaneal joint have?

Inversion and eversion (1 degree of freedom)

What are static stabilizers?

Components of the lateral and medial ligment complexes of the talocrural joint

Is inversion and eversion detrimental to the talocrural joint?

Yes, because of its geometry

Are the distal projections of the lateral and medial malleoli different?

Yes

Is inversion or eversion of the subtalar joint greater?

Inversion



They increase potential stress on the talocrural joint static stabilizers

Are lateral or medial ankle sprain more common?

Lateral (80%)

What are the MOIs for lateral ankle sprains?

*Excessive supination (injure talocrural and subtalar joint)



*Pure inversion (Rolling over the lateral surface of the foot, stepping on an uneven surface (IE first base) with the ankle dorsiflexed)



*Contact with another player

What are the three lateral ankle ligaments

*Anterior talofibular ligament



*Calaneofibular ligament



*Posterior talofibular ligament

Which is most often injured during the lateral ankle sprain?

Anterior talofibular ligament



(Taut in supination)

When is the clacaneofibular ligament injured during the lateral ankle sprain?

Injured with more significant inversion

Which is the most rarely injured ligament in lateral nakle sprains?

Posterior talofibular ligament

How do you injure the posterior talofibular ligament in a lateral ankle sprain?

Inversion and dorsiflexed ankle

What is the signs and symptoms of the lateral ankle sprain?

*Popping



*TTP sinus tarsi and lateral ligament complex



*Diffuse ecchymosis and edmea/swelling (increases with the severity of injury)



*Pain or laxity with anterior drawer test or talar tilt test

What do you have to rule out first for a lateral ankle sprian?

Fracture (fibula, tibia, talus)



Avulsion fracture (styloid process of the 5th MT)

What is the predispositon for the lateral ankle sprain?

Previous history of ankle instability or sprain

What are the two types of chronic ankle instability?

Mechanical instability



Functional instability

What is mechanical instability?

Gross laxity of the talocrural or subtalar joints with clinical examination

What is functional instability?

History of repeated ankle sprains but normal findings during ligamentous stress tests



Reports instablity but none of that shown in tests, could be from neuromuscular control

What are osteophytes?

Bone spurs

What are osteochondral defects?

When ankle subluxes and goes back in, articular cartilage is damaged

What is osteoarthritis?

People who develop have an increased chance for a significant ankle trauma

What are the secondary complications of ankle sprians?

Osteophytes



Osteochondral defects



Osteoarthritis

Baed on the ottawa ankle rules when do you get ankle films

If there is malleolar pain and any of



1) Tender on posterior edge, tip or distal 6 cm of lateral or medial malleolus



2) Unable to complete 4 steps

Based on the Ottawa Ankle Rules when do you get foot films

Midfoot pain and any of:



1) Navicular tenderness (Navicular bone has poor outcome for healing so you don't want to miss it)



2) Base of 5th of MT tenderness



3) Cannot complete 4 steps

What is a syndesmosis sprain?

High ankle sprain

What does the syndesmosis sprain come form

Injury to the tibofibular syndesmosis (syndesmosis that is holding two bones together) and inferior anterior tibiofibular ligament

What will syndesmosis sprain reuslt in?

Lateral displaement of the distal fibula, shifting off the ankle

Waht is the occurance rate of the syndesmosis sprain?

10%



18% in NFL

Is the prognosis for the syndesmosis sprain slower to return or quicker to return?

Slower to return because it is the injury of a structure that holding two bones together that has been injured and when step down, thebones seperate and is very painful. Longer timing to heal mechanical outcome of injury is the problem

What is the MOI of a syndesmosis sprain

External rotation of talus when ankle is dorsflexed

What is the signs and symptoms of the syndesmosis sprain?

*Pain (TTP) localized anterior aspect of the ankle (inferior tibio fibular joint)



*Pain wiht ankle dorsiflexion



*Positive Keliger's test



*Pain with walking corresponds to painful location with palpation (morise widens during WB)

Why do fewer medial ankle sprains occur/

Configuration of static stabilizers and joint configuration which prevent excessive ankle eversion

What ligament is often sprained in medial ankle sprain?

Medial ankle sprain

What can the medial ankle sprain also be associated with

Syndesmosis injuries


Malleolar fractures

What is the signs and symptoms of the medial ankle sprain?

*TTP medial joint line



*Diffuse ecchymosis and edema/swelling on medial aspect of ankle



*Pain or laxity with the eversion talar tilt test

What should you rule out for the medial ankle sprain

*Medial malleolus fracture (knock off fracture)



Bimalleolar fracture (Pott's fracture)

What is a knock off fracture

If talus everts and rocks into the lateral malleolus can knock off the medial malleolulus

What is a pott's fracture

Bimalleolar fracture



If have knack off fracture through the medial malloelus and a fracture through the lateral malleolar

What are complicated injuries of the ankle?

Fracture and dislocation

Will tibia shaft fracutres typically present with gross deformities?

Yes

Does a tibia shaft fracture equire signficant force?

Yes

Can peopel with tibia shaft fractures weight bear?

No

Is there is possiblity for radiating pain on the tibia shaft fractures?

Yes

What sort of leg fractures can rotational stresses cause?

Fibula spiral fracture

Can a person weight bear with a fibula spiral fracture?

May be able to (limited)

Is there swelling in a fibula sprial fracture?

Yes, localized pain as well as swelling over location of fracture

What should you rule out with ankle sprains?

*Rule out fracture of superior portion of fibula with ankle sprains (Maisonneuve fracture)

Does the achilles tendon have good or bad vasularity?

Poor



Achilles tendon has a portion that is less vascularized than other (~2-6 cm above insertion on calcaneous)

Where does the achilles tendon insert

The tendon twists and inserts slightly medially on the axis of the subtalar joint on the calcaneous

Where is the comon site of achilles pathology: tnedinosis or rupture

Distal avascular zone

What is a midsubstance achilles tendinopathy?

*chronic tendinopathy of the achilles tendon so presents as thicker and can palpate and feel crepitis as person moves



It is acutely swollen around achilles so hard to see the contour of the achilles

What is a pump bump

Exotosis on the achilles tendon

What is insertional tendinopathy

Pain right wehre the achilles tendon inserts on the calcaenous

Does a person with midsubstance or insertional achilles tendinopathy have a better prognosis

Mid substance 


 


Harder to heal insertional 

Mid substance



Harder to heal insertional

What is a partenon of the ahcilles tendon

Highly vascularized layer surround the achilles tendon that is susceptible to inflammation and forms adhesions to underlying tendon

What is the path of tendon rupture

Paritenonitus


Tendinosis (often silent)


Tendon rupture

What is achilles tendinosis

Degeneration of tendon midsubstance



Leads to microscopic tears and necrotic areas

Is achilles tendinosis often silent

Yes

Is achilles tendinosis visible with a disagnositic ultrasound or MRI?

Yes

What are the precipitating factors for achilles tendinopathy

*Previou ankle sprain



*Hyperpronation (Continue to overload the achilels more because more tension on medial and achilles mainly work in sagittal plane)



*Tibial varum (Deliver more forces inot the achilles)



*Calcaneovalgus(Part of hyperpronation --> Calcaneous turned laterally)



*Achilles tightness



*Hamstring tightness



*Training errors

What is the signs and symptoms of achilles tendinopathy?

*Burning pain during activity



*TTP



*Palpable nodule



*Visible thickening (If chronic)



*Crepitis with active movement (Scarring between peritenon and achilles tendon)

What is the treatment for achilles tendinopathy

*Eccentric training



*Improve limited DF RoM through stretching and tissue and joint mobilizing



*Taping



*Surgery (Last course of action ot clean out debris)

what may cause achilles rupture

Achilles tendinosis or paratenonitis may lead to rupture but not necessary as precipitating factor

Which is achilles rupture more common in?

Males > 30 yrs old

What is the MOI of Achilles rupture

Forceful contraction (landing from jump, sudden changes in direction)

What is the signs and symptoms of achilles rupture?

*Loud pop (gunshot) at time of injury and person reports feeling that "was kicked in calf"



*Visible defect in tendon



*Absence of palpable in tact tendon



*Excessive edema/ecchymosis



*Positive thompson test



*Can actively plantar flex



*Can walk but can't do a single leg hell raise (can't get enough torque)

How long does achilles rupture take to recover?

7-9 months

What is the conservative treatment of achilles rupture

Immobilization (cast or night splint) 8 weeks

Are outcomes better with surgery or conservative management for achilles rupture

Surgery



*Lower instance of re rupture



*Faster return to pre-injury activity

What are medial tibial stress syndromes also called?

Shin splints

What does medial tibial stress syndromes also involve

Reaction of tissues along the medial border of the distal tibia (periostitis, posterior tibialis tendonopathy, tibial stress fracture)I

ARe shin splints an overuse yes

Yes



Or can be acute response to changes in surface, shoe type, volume of training

Why can overpronation also contribute to medial tibial stress syndrome

Because overloads the posterior tibialis makes change of tension and cause inflammation of the periosteum

Do the medial tibial stress syndrome develop gradually?

Typically

Medial tibial stress syndromes have diffuse pain along where?

Along posterio-medial tibial border during activity

What is the treatment during medial tibial stress syndrome?

Usually responds well to conservative treatement



*Ice


*Modified training


*Correcting alignement issues


*Improved shoe type


*Strenghtening of posterior tibialis



(Tape very tight because of gate theory --> But just masking problem)



If the pain of a medial tibial stress syndrom goes from diffuse to focal what should be ruled out?

Stress fracture of the tibia

Where can stress fractures occur?

Several locations:



Distal tibia


Midshaft of tibia


Distal fibula

What kind of injury is a stress fracture

Overuse injury

How do you diagnosis a stress fracture

X ray


Bone scan

What is the signs and symptoms of a stress fracture

*focal pain on bone


*Pan during activity and at rest


-"Night pain"


*Positive bump test or squeeze test (not always sensitive in early stages)

What is the treatemnt for stress fractures

*Rest


*Walking boot *PWB to NWB depending on severity)


*Modified conditioning to maintain fitness (Swim Ex)


*Bone stimulator *Pulse ultrasound

What are the four compartments of the leg?

*Superficial


*Postieror


*Deep posterior


*Anterior

The four compartments of the leg are bordered by what

Dense fascia and bone

The dense fascia are poor elastic properties to accomodate expansion?

Yes

What happens to pressure in compartments as exercise

Increases because more blood flow

Abnormally high pressure in compartments has potential to do what?

Damage nerves and vessels

What happens when comparments have abnoramlly high pressure that exceeds capillary perfusion pressure (Pressure within capillaries that forces blood out to surrounding tissues)?

Resultsi n ischemia and hypoxia, eventually leads to cell death because can't deliver oxygenated blood to the tissues that need it

What are the two types of compartment syndromes?

*External compartment syndrome (chronic vs acute onset)



*Traumatic compartment syndrome

When do the signs and symptoms for the exertional compartment syndrome occur (chornic onset)

During or after exercise)

How long does it take to get to the chronic onset of the exertional compartment syndrome?

Takes weeks or years

What are the signs and symptoms of the exertional compartment sndrome

Increased fascia thickness inibits venous outflow but not arterial inflow (can take blood into compartment but can't get out)

What compartments are most susceptible for the exertional compartment syndrome?

*Anterior


*Lateral


*Deep posterior

What compartments don't have exertional compartment syndrome?

*Superficial


*Posterior Wh

What is different about the acute onset of exertional compartment syndrome?

Same as s/s for chronic without the prior symptoms or history of tramatic injury

What is the sign and symptoms of the exertional compartment syndrome?

*Pain localized in compartment



*Possible numbness into the toes and / or dorsla and lateral aspect ofoot (anterior or lateral CS)



*Decreased strength of muscles associated iwth compartment



*Pain with passive ROM (stretching does not help)



*Possible visible swelling in compartment



*rEduced or absent pulse (dorsalis pedis) in advanced/extreme cases

When is fasciotomy required?

When the resting pressure is > 15 mmHg



>30 mmHg 1 min post ex



>20 mmHg 5 minutes post exercise

Is traumatic compartment syndrome a medial emergency

Yes could lead to significant muscular necrosis and lose muscle mass that doens't come back

What is the MOI for traumatic compartment syndrome

*Direct blow to the anterior or lateral compartment (most exposed)



*More common in the anterior compartment


*May also be present with tibia or fibula fracture

What are the signs and symptoms of the traumatic compartment syndrome

Related to the 5 P's



Pain


Pallor


Pulselessness


Paresthesia


Paralysis

What are the signs and symptoms of a traumatic compartment syndrome

Visibally swollen compartment



*Shiny skin (because stretch)


*Hard to touch compartment and TTP


*Inability to DF ankle or extend toe


*Pain with passive ankle ROM (stretch) --> Plantar flexion if anterior compartment


*Walking extreme pain


*Drop foot (if nerve peralis)


*Dorsalis pedis pulse integrity

Do you apply compression wraps with traumatic compartment syndromes?

No



Because will further resist ability of fluid to leave compartment

What type of joint is the knee?

Hinge

Why do we need patella?

Because increases the leverage of the quads and makes it more efficient

Is the knee joint more or less stable than the ankle?

More



Less likely to sprain the ankle because of the ligamentous support (cruciate and collateral ligament)

What are the three articulations of the knee?

Patellofemoral


Tibiofemoral


Fibulotibula

What is the largest diarthrodial joint?

Tibiofemoral joint

How many degrees of freedom does the tibiofemoral joint have?

3



Flexion/extension


Internal/external rotation


Abduction/adduction

How many voluntary movements does the tibiofemoral joint have?

2 DOF



Sagittal and transverse plane

What is the ranking of ROM (osteokinematics)

(Greatest to least)



Sagittal plane (140 degrees)



Transverse plane (IR 30 degrees, ER 45 degrees)



Frontal plane (Slight and passive)

Will range of motion be greater or less wen measured dynamically during activity?

Greater

Is abduction valgus or varus?

Valgus

Is adduction valgus or varus?

Varus

During knee flexion the tibia _____ rotates on the femur

Internally

During knee extension, the tibia _____ rotates on the femur

Externally

What is the screw home mechanism?

As the knee approaches terminal extension (last 20 degrees), tibia externally rotates



And when the knee flexes, the tibia internally rotates (important during the swing phase of the gait (unlock knee))

Why does the screw home mechanism occur?

Because of the femoral condyle curvature (allowing the tibia to glide and slide longer on the medial femoral articulating surface)



Increases the tibia stability on the femur (lockign the knee, tightening the cruciate ligaments)

What is the knee flexing and the tibia interally rotating initiated by?

Popliteus muscle

Are medial and lateral femoral condyles convex or concave

Convex

Does the medial or the lateral condyle have a longer articulating surface

Medial

What is more prominent the lateral or medial condyle?

Lateral

Is the tibial plateaul concave or convex

Concave

What is the tibial plateau assisted by?

Menisci

Which tibial plateau is larger the medial or the lateral

Medial



(The lateral TP is less concave than the medial TP)

The convex and concave articulation translations (arthokinematics) provides an additional ___ DOF

2



-Anterior-posterior


-Medial-lateral


-Superior-inferior (distraction/compression)

When a concave surface moves on a convex surface the concave surface glides and slides in the ____ direction as the osteokinematic motion

Same

When the convex surfaces moves on a concave surface the convex surface glides and slides in the ____ direction as the osteokinematic motion

Opposite

If you flex the knee, the tibia rolls _____ and slides _____

Back


In same direction

In the ankle is the talus convex or concave

Convex

As the ankle goes into dorsiflexion, is the talus gliding posteriorly or anteriorly

Posteriorly

What is the glide of the tibia on the femur during knee flexion

Glides posteriorly

During squatting when the femur is moving the the tibia, what is the direction of the glide

Femur gliding forward

In an open kinetic chain when the talocrural joint is in dorsiflexion, the talus moving on the tibia/fibula is gliding in what direction

Posteriorly 

Posteriorly

When the talorcural joint goes into squatting and the tibia/fibula is moving on the talus what direction is the glide?

Anterior 

Anterior

What is the consequence of motion without gliding (translatory motion)

During knee motion, menisci would more likely be pinched between the condyles and tibial plateau which leads to injury

Patella displays ____ motion

Translatory motion

What is the patellofemoral arthrokinematic movements: when the knee flexes the patella glides _____

Distally (inferiorly)

When the knee extends the patella glides ____

Posteriorly (superiorly)

Is the knee more mobile in flexion or extension

Patella is very mobile in extension when quads not working on it

What is the mechanical advantage of the patella

Moment arms for the quads is greater in presence of patella so less quad force required 

Moment arms for the quads is greater in presence of patella so less quad force required

Does the patella offer less or more mechanical advantage when the knee is extended compared to when flexed

Less

What is the patellar tracking movement influenced by?

Quad contraction and geometry of femoral condyles 

Quad contraction and geometry of femoral condyles

What is the medial and lateral shift of the patella

C-curve pattern from the knee extension to flexion influencing medial and lateral tilt

The patella tilts ____ from extension to flexion

Laterally

Does the contact area of the patella with the femur change as knee flexion changes

es

Why is the patella more mobile in extension

Because in less contact with femur near extension

Patellofemoral joint reaction forces ___ predictably in response to quad muscle force and ____ in knee flexion until about ___ degrees flexion

*Increase


*Increase


*70

Do you take the q angle standing or supine

Standing

Is the q angle larger in males and females why?

Females



Pelvis width/femur length (Men have longer femurs)

What lines create the q able

1) Line from the tibial tuberosity and midpoint of patella



2) Line form midpoint of patella to ASIS W

What sort of loading does the MCL resist?

Valgus loading

How many portions does the MCL have?

2



(Superficial and deep)

Where does the deep portion of the meidal collateral ligament go?

Deep into the joint and inserts on the medial meniscus

What kind of size doe sthe medial collateral ligament have

Broad flat

Is the MCL tigher or not when knee is extended

Tighter

What is the MOI for the MCL sprain

Medially directed force on the lateral aspect of the knee resulting in valgus loading

What are the signs and symptoms of the medial collateral ligament sprain

TTP over the medial apsect of the knee (adductor tubercle to the tibial plateau or mid-substance of MCL)



*Positive valgus stress test (gapping medial joint line, pain)



*Decreased tolerance to AROM knee flexion/extension due to pain and/or swelling (Would especially not like it in extension because extension makes the medial collateral ligament more tense)



*Edema visible on medial aspect of knee (may take time to develop)

How are most medial collateral ligaments treated, conservatively or surgically

Conservatively

What is treatment of medial collateral ligament sprains like?

*Conservatively (Rest, ice, PWB-FWB, progressive rehabilitation)



*Imobilization brace for 2-3 degree injries



*3 degrees sprains can be surgically repaired when in conjunction with an ACL injury

Adolescents displaying valgus laxity should be screed for waht

Epiphyseal plate injuries

What kind of shape does the lateral collateral igament have?

Cord-like

Does the lateral collateral ligament connect to the lateral malleolus

No

What kind of loading does the lateral collateral ligament resist

Varus loading and deformity

What is the signs and symptoms of the lateral collateral ligament sprain

*TTP over lateral aspect of knee on lateral collateral ligament and joint line



*Localized swelling visible on lateral aspect of knee (LCL is extracapsular)



*Positive varus stress test (gapping lateral joint line, pain)



*Decreased tolerance to AROM knee flexion/extension due to pain and/or swelling

What do you have to rule out with a lateral collateral ligament

Fibular head fracture



Common peroneal nerve injury

How are most 3rd degree LCL injureis treated

Surgically (early repair: suture anchors on avulsed site or seqing ends together late reconstruction: Replacing LCL with tendon graft)

What is the length of recovery for a mild-moderate lcl sprain

4-6 wks W

hat is the length of recovery for surgical managment of LCL sprain

WB restriction up to 12 weeks then progress

Adolescents displaying varus laxity should be screened for _______

Epiphyseal plate injuries

ACL is _____articular and ____synovial

Intraarticular


Extrasynovial

Will the synovial fluids benefit the anterior cruciate ligament at all?

No, because it is outside of the synovial capsule

What does the anteriro crucial ligament inhibit

Anterior translation of tibia, intrarotation of tibia and restiricts valgus and varus of the knee

What kind of bundle structure does the ACL have?

Double bundle

What are the two bundles of the ACL like in extension

Parallel

What are the two bundles of the acl like in 110 degrees of flexion

Crossed

What is the benefit of having a double bundle structure?

"Regional Recruitment"



Allows knee to be afforded stability across a larger degree of motion



Because as go into flexion the AMB (anterior medial bundle) tightens while the PLB (Posterior lateral bundle tighens in extension)



Affords support thorugh the full range of knee motion

What are the typical mechanism of injury for anterior cruciate ligament injuries?

Non-contact



(Jump landing, rapid stopping, changes of direction)

What is the difference between non contact, indirect and direct contact injuries?

Non contact: No contact on the knee or from any opponent



Indirect: Actually cotact somewhere just not the knee



Direct: Contact the knee

What is the mechanism of injury for the anterior cruciate ligament injuries

*Valgus


*Rotatory loading (tibial rotation-can be both external and internal rotatio)


*Agressive quad force (Because will anteriorly translate tibia)

In matched sports are females or males more likely to suffer ACL tears

Femlaes

Do males or females suffer more ACL injuries per year comapred to females? Why

Males, just because there are more sports that males generally play

What are the factors to consider when understanding injury risk?

*Anatomical


*Hormonal


*Neuromechanical (Neuromuscular and biomechanical)



Neuromuscular = recuritment and activation of muscle and strength differences



Biomechanical = distribution of forces (kinetic and kinematics)

What does the factors to consider for understanding injury risk help us determine?

What do we know?


What we need to know?


How will we determine.measure what we need to know?


How we can intervene and prevent inuries

What are the possible anatomical predisposing factors for anterior cruciate ligament injuries?

*ACL size (Better ot have an increased corsssectional area, to increase strength and ultimate load to failure, females typically have a smaller ACL)



*Femoral intercondylar notch size (Only have so much space availabe because the ACL is nestled in the femoral intercondyler notch. If have smaller notch, tighter, more and less space for the ACL to move around the condyle)



*Pelvic tilt (How much the pelvis rotates back and forth)



*Pelvis width to femoral length ratio



*Joint laxity



*Q angle (line of force of quads)



*Tibial slope (If look at tibia from medial to lateral, tibia has line slope that is slightly posterior, people with an increased posterior slope more likely to tear their ACL)

What are the hormonal predisposing factors of ACL injuries

Menstruation: Estrogen and progesterone

What are the neuromuscle predisposing factors for ACL injuries

*Quad dominance (People who rupture ACL are typically quad dominatn)



*Poor ham strength



*Poor hip strenght (reduciton of femur adduction)

What are the biomechanical predisposing factors for ACL injuries

*Greater knee valgus during task



*Trunk position during task



*Over pronation (Tibial rotation affects the pronation of the foot)

What is genu recuvatum?

Hypermobility



Excessive laxity

What is the unhappy tirad

ACL rupture


MCL rupture


Medial meniscus tear

What are the signs and symptoms of ACL injuries

*Felt/heard a distinct pop at time of injury


*Felt like knee shift


*Effusion onset is rapid (hours)


*Palpation tenderness can be diffuse: Note pain on posterio-lateral corner of knee or lateral joint line due to concomitatnt bone bruise


*Can WB but prefers slight knee bend and shortened stance time


*Positive Lachman's and ADT

Which is more sensitive the Lachman's Test or the Anterior Drawer Test

Lachman'sW

What does "sensitive" mean

Less likely to have a false positive

When is the anterior drawer test more likely to be useful and positive

Post acute patient

Both lacman's and anterior drawre test will be less likely to be positive after what?

Several hours of injury due to muscle gaurding

Is partial ACL tear (2nd degee) a misnomer?

Yes, there is still a dysfunction in the ACL such that the knee stability is greatly affected. Surgery is not usually performaed in such a situation; however, it's usually inevitable the partial tear becomes a complete tear over time (return to activity)

Is lack of clincial laxity a good predictor of functional ability and stability?

No



(There are copers and non-copers, 10% are copers

What is the early management of anterior cruciatel igament sprain?

Knee mobilizer


PWB progressing ot FWB


Reduce swelling


Improve ROM and quad function



(Outcomes from the surgery are improved if full ROM and quad tone and function are improved prior to surgery)

What is the surgical reconstruction of ACL sprain like?

7-8 months recovery



*Patella bone-tendon-bone graft (autograft or allograft)



*Hamstring quadrupled bundle graft (autograft)



*Achilles tendon graft (allograft)

What are the basic steps of the arthroscopic surgery of the knee for ACL reconstruction

Tunnels drilled and then debris the knee and then have a little endobutton fixation and then screw fixation between the new and old bone (pulled graft through)

Is the ACL surgery an open surgery?

No