Msi Week 1:wrist And Hand

Front 1

Infection or inflammation within one of the compartments of the hand results in a condition called..?

What are the early and late signs of this condition?

Back 1

Compartment syndrome

Early signs: pain with passive movement

Late sign: pulselessness

*Emergency situation

Front 2

The palmar aponeurosis attaches to which bony structures?

Back 2

Hook of hamate and tubercle of trapezium.

Front 3

What are the 4 sections of metacarpal and proximal/middle phalanx bones?

Back 3

Head
Neck
Shaft
Base

Front 4

What are the 3 sections of distal phalanx bones?

Back 4

Tuberosity
Shaft
Base

Front 5

An increased space between the scaphoid and lunate bones implies what sort of injury?

Back 5

Scapholunate dislocation

Front 6

How can you tell the difference between a sesamoid bone and an avulsed bony fragment?

Back 6

Sesamoid bones are round

Avulsed bony fragments will be jagged.

Front 7

T or F.

Flexion can only be complete w/ full extension.

Back 7

TRUE.

Front 8

Name 4 ligaments of the wrist joint.

Back 8

1. Medial collateral ligament
2. Lateral collateral ligament
3. Interosseous ligaments
4. *Articular (triangular) disk--> ulnar disc

Front 9

Which muscle tendons are located within the carpal tunnel?

Which nerve is located in the tunnel?

Back 9

(All long flexor tendons)
1. Flexor pollicis longus
2. Flexor digitorum superficialis
3. Flexor digitorum profundus

*Median N

Front 10

Is the flexor carpi radialis tendon located within the carpal tunnel?

Back 10

NO.

Front 11

Where do the Ulnar artery and nerve sit in reference to the carpal tunnel?

Back 11

Sit superficially

Front 12

Name the 4 compartments of the hand.

Back 12

1. Hypothenar
2. Central
3. Interosseous
4. Thenar

Front 13

Which muscles are located in the hypothenar compartment?

Back 13

1. Flexor digiti minimi brevis
2. Abductor digiti minimi
3. Opponens digiti minimi

Front 14

Which muscles are located in the central compartment of the hand?

Back 14

(same muscles that span through carpal tunnel)
1. Flexor pollicis longus
2. Flexor digitorum superficialis
3. Flexor digitorum profundus
4. Lumbricals

Front 15

Which muscles are located in the interosseous compartment of the hand?

Back 15

1. Adductor pollicis
2. Palmer interossei
3. Dorsal interossei
(and metacarpal bones)

Front 16

What structure connects the skin of the hand to underlying bones?

Back 16

Palmar aponeurosis

Front 17

What is the name for a disease of the palmer aponeurosis?

Back 17

Dupuytren's contracture
(fingers bend towards palm and cannot be fully extended)

Front 18

Name the 2 fibrous sheaths that cover the fingers.

Back 18

1. Arcuate fibrous sheath
2. Cruciate fibrous sheath

Front 19

Which artery is the main contributor to the superficial palmer arterial arch?

Back 19

Ulnar A

Front 20

Which artery is the main contributor to the deep palmer arch?

Back 20

Radial A

Front 21

Describe the superficial blood flow of the palmer portion of the hand.

Back 21

Superficial palmer arterial arch ---> common digital artery branches --> proper digital artery branches (line both sides of each finger)

Front 22

Which muscles of the hand are the only muscles to originate from tendons?

Back 22

Lumbricals
(located in radial side of each flexor digitorum profundus tendon)

Front 23

What ligaments fasten the flexor/extensor tendons to the digits?

Back 23

Arcuate (annular) fibrous sheaths

Front 24

What is the name of the common flexor sheath that surrounds the tendons within the carpal tunnel?

Back 24

Ulnar bursa
(starts at carpal tunnel and extends up little finger; infection can occur within the ulnar bursa and swelling can spread up the little finger)

Front 25

What function do dorsal interosseous muscles perform?

How many muscles are there?

Back 25

Abduction
(DAB: Dorsal-->ABduct)

*There are 4 of these muscles

Front 26

What function do the palmer interosseous muscles perform?

How many muscles are there?

Back 26

Adduction
(PAD: Palmer-->ADduction)

*There are 3 of these muscles
(there is NO dorsal interosseous muscle associated with the middle finger)

Front 27

Which interosseous muscles act on the middle finger?

Back 27

Dorsal interosseous

*The middle finger can only be abducted

Front 28

Which flexor tendon inserts on the DIP?

Back 28

Flexor digitorum profundus

Front 29

Which flexor tendon inserts on the PIP?

Back 29

Flexor digitorum superficialis

Front 30

From which tendon do lumbricals originate?

Back 30

Flexor digitorum profundus

Front 31

What small tendons attach the flexor digitorum superficialis/profundus tendons to each other and the phalanx bones?

Back 31

Vincula

Front 32

Where do lumbricals and interossei muscles insert?

Back 32

On the expansion below the PIP anterior to the MP.

Front 33

The superficial innervation of the hand is mostly supplied by which nerve?

Back 33

Median N

Front 34

Which nerve provides cutaneous sensation to the area of the hand over the anatomical snuff box?

Back 34

Radial N
(superficial branch)

Front 35

Which nerve provides cutaneous sensation to the medial part of the hand, the little finger, and half of the ring finger?

Back 35

Ulnar N

Front 36

Which nerve provides cutaneous sensation to the lateral part of the hand and the index finger, middle finger, and half of the ring finger?

Back 36

Median N

Front 37

The palmer metacarpal arteries are branches from which arterial arch--the superficial or deep palmer arch?

Back 37

Deep palmer arch.

Front 38

Name two arteries that are branches of the deep palmer arch that supply the index finger and thumb.

Back 38

1. Radialis indicis A --> index finger
2. Princeps pollicis A --> thumb

Front 39

Damage to which nerve would result in thenar wasting and failure of the flexion of digits 2 and 3?

Back 39

Median N

(Known as "hand of benediction" or "monkey hand")

Front 40

Damage to which nerve would result in hypothenar wasting and lack of MP flexion?

Back 40

Ulnar N
(claw hand)

Front 41

Avulsion of the central slip of the extensor expansion would result in what type of finger deformity?

Back 41

Boutonnier deformity
(flexion at PIP, extension at DIP)

Front 42

Avulsion of the lateral bands of the extensor expansion off the DP would result in what type of finger deformity?

Back 42

Mallet finger
(flexion at DIP)

Front 43

Name the term used to describe an injury to the medial collateral ligament of the MP joint?

Back 43

Game Keeper's (skier's) thumb

Front 44

Hard or bony swellings that occur on DIP joints are known as...?

Those that occur on PIP joints are known as...?

Back 44

Heberden's nodes

Bouchard's nodes

Front 45

What condition involves inflammation of the extensor pollicis longus/brevis tendons?

Back 45

De Quervain's tendonitis

Front 46

Name the medical condition usually characterized by recurrent attacks of acute inflammatory arthritis—a red, tender, hot, swollen joint.

Back 46

Gout

(usually occurs on big toe)

Front 47

Name the tendon sheath that surrounds the flexor pollicis longus muscle.

Back 47

Radial bursa

Front 48

Name the tendon sheath that surrounds the flexor pollicis longus tendon.

Back 48

Radial bursa

Front 49

Name the interosseous ligaments between the metacarpal bones.

Back 49

Transverse metacarpal ligaments