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45 Cards in this Set

  • Front
  • Back
3 bones of the hip
ilium, ischium, pubis
At what age do the three bones fuse together?
20-25 yo
What is the name of the surface in the acetabulum where the head of the femur articulates?
Lunate surface
What disease can be diagnosed using tri-radiate cartilage placement?
Congenital hip dislocation (more common in boys)
What is the important line that denotes a continuous and symetrical line between the obturator foramen and medial aspect of the femur?
Shenton's line
What is misplaced in congenital hip dislocation?
Ossification center of the femoral head
Describe Ortolani's maneuver.
Lift and abduct thigh, feeling for "clunk" when the femoral head re-seats into the acetabulum
Describe Barlow's maneuver.
(reverse of Ortolani's), tests hip instability
-Thigh is adducted, then gentle downward pressure to see if the hip is "dislocatable"
What lies on top of the articular capsule of the hip joint? What muscle movement does it assist?
Bursa, assists iliopsoas muscle movement
What are the 3 ligaments of the hip joint?
Iliofemoral (strongest), pubofemoral, ischiofemoral
What movement does the iliofemoral ligament prevent?
Hyperextension of the joint
2 purposes of the acetabular labrum
Protect and deepen the hip joint cavity
What ligament lies at the bottom of the labrum and connects with the femoral head?
Transverse acetabular ligament
Connects the transverse acetabular ligament and femoral head
Ligament of the head
What vascularizes the femoral head?
Artery of the head (branch of obturator)
What is the major contributor for the hip joint vascular supply? Minor contributors?
Major-medial circumflex a.
Minor-Lateral circumflex a., retinacular a., A. of head
3 locations of femoral fractures
Neck fractures (likely avascular necrosis), intertrochanteric fractures, spiral fractures (trauma)
5 main things traveling through greater sciatic foramen
Piriformis muscle
Sciatic nerve
Sup. and inf. gluteal nerve and vessels
Post. femoral cutaneous nerve
Pudendal n. and Internal pudendal a. (exit)
2 main things in lesser sciatic foramen
Obturator internus tendon
Pudendal n. and internal pudendal a. (re-enter)
Function of gluteal maximus
Extend and laterally rotate hip/thigh (mainly used when getting up)
Innervation of gluteal maximus
inferior gluteal nerve (L5, S1,2)
Function of gluteal medius and minimus
Abductors, stabilize during walking
Innervation of three abductors of hip
superior gluteal nerve (L4,5, S1)
Name of test to check for strength of hip abductors (stand and check lean)
Trendelenburg test
What lies on the anterior surface of the piriformis muscle?
Sacral plexus
Where does piriformis muscle attach?
Greater trochanter
Where does the obturator internus tendon insert?
Medial surface of greater trochanter
Where do the gemelli muscles (Sup. and Inf.) lie?
On either side of the obturator internus tendon
-Sup. arises from ischial spine
-Inf. arises from post. ischium
Function of quadratus femoris
Lateral rotator
Innervation of lateral hip rotators
Described as "nerve to..."
-nerve to piriformis
-nerve to obturator internus
-nerve to quadratus femoris
Sciatic nerve passes between which two lateral hip rotators
piriformis and superior gemelli
Innervation of hamstrings
Sciatic nerve (L5, S1,2)
Vasculature of hamstrings
Perforating arteries of deep femoral a.
Role of hamstrings
Knee flexors and hip extensors
Which muscle "unlocks" the knee from an extended position?
Popliteus
What often accompanies pulled hamstring injuries?
Hematomas
What two nerves make up the sciatic nerve?
Tibial nerve and common fibular nerve (branches to these in the popliteal region)
Injection site for IM drugs
Place palm on greater trochanter and index on ASIS, then between index and middle finger
Posterior hip dislocations present with what type of rotation?
Internally rotated, shortened, adducted, and flexed
What often happens with posterior hip dislocations?
Avascular necrosis (AVN)
Difference of presentation between posterior hip dislocation and femoral neck fractures.
PHD-Internally rotated and shortened
FNF-externally rotated and shortened
Describe order of contents of popliteal fossa from superficial to deep.
Tibial/Common fibular nerve, popliteal vein, popliteal a.
What runs down the posterior midline of calf?
Small saphenous vein
What presents as a lump in the posterior knee?
Baker cyst or popliteal cyst; usually after injury b/c of increased synovial fluid production in small bursa
What provides cutaneous innervation for the posterior thigh region?
Posterior femoral cutaneous nerve (S1,2,3)