Hand

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Opposition:

Opponens pollicis

If the ulnar collateral ligament of the first metacarpophalangeal joint ruptures (3rd degree sprain) or becomes chronically lax, abnormal hyperabduction is possible, also known as

Skier thumb

Superficial palmar arch, mainly from the _____ artery

Ulnar

Lumbricals 3 & 4 are innervated by:

Ulnar nerve (deep branch)

Ulnar nerve innervation to the palm and the dorsal and palmar surfaces of the medial _____ digits

1 1/2

____ PADS inserting on digits 2,4,5

3

Median nerve to the palm and the palmar surface of the lateral _____ digits and to the skin of the dorsum over the distal phalanges of those same digits

3 1/2

Superficial branch of the radial nerve to the dorsum and dorsal surface of the lateral ____ digits, except over the distal phalanges

3 1/2

_____ DABS inserting on lateral side of 2 & 3 and medial sides of 3 & 4

4

CM of _____ Flexes and rotates slightly during tight grasp; the fourth CM joint moves slightly to assist

5th finger (pinky)

A person with inflammation in the carpal tunnel could have weakness in any of the following muscles except the A. abductor pollicis brevis B. flexor digitorum profundus C. extensor digitorum D. flexor digitorum superficialis

A. abductor pollicis brevis

Thumb abduction:

APL and APB

Metacarpophalangeal joints permit flexion-extension, ______, and circumduction

Abduction and adduction

Which muscle does NOT make up the anatomical snuffbox? A. Extensor pollicis longus B. Abductor pollicis brevis C. Abductor pollicis longus D. Extensor pollicis brevis

B. Abductor pollicis brevis

The functional position of the hand includes all of the following joint positions except A. flexion of the metacarpophalangeal and interphalangeal joints B. the thumb in slight opposition C. some wrist flexion D. some wrist extension

C. some wrist flexion

________ Is a saddle joint with its own joint cavity formed between the trapezium and base of the first metacarpal

CM joint of the thumb

_____ is the most important of the CM joints

CM joint of the tumb

Have a fibrous capsule that is strengthened on the medial and lateral sides by...

Collateral ligaments

Metacarpophalangeal joints have a fibrous articular capsule that is strengthened medially and laterally by...

Collateral ligaments

Which type of grip is used to grasp the rim of a wheelchair?

Cylindrical grip

Mallet finger isn't really a joint injury but results in permanent inability to extend the ____ joint

DIP

On the back of the hand _______ fascia attached to metacarpal bones

Dorsal interosseous

______ contracture is a pathological thickening and shortening of fibers of the palmar aponeurosis, resulting in continuous flexion of the metacarpophalangeal (MP) and proximal interphalangeal (PIP) joints of the involved digits (usually the ring and little fingers

Dupuytren's

Thumb extension:

EPL, EPB, APL

With the palm down on the table (forearm pronation), raise the second finger off the table. This requires muscle action of the

Extensor indicis

Which muscle originates on the humeral lateral epicondyle and inserts at the base of the distal phalanges of digits 2-5?

FDS

Thumb flexion:

FPL, FPB

On the back of the hand ______ of the dorsum of the hand continuous with antebrachial fascia and extensor expansions

Fascia

If the central band of the extensor expansion ruptures, the PIP joint becomes ______ and the DIP joint _______ in Boutonniére deformity; it occurs commonly in rheumatoid arthritis

Flexed Hyperextended

The proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints are hinge joint that only allow ______ movements

Flexion and extension

Damage to the radial nerve would impair all of the following muscles except the

Flexor pollicis longus

Digital Stenosing Tenosynovitis (Trigger Finger) is with discrepancy between the volume of the ______ and the size of the pulley lumen

Flexor tendon

The intrinsic muscle mass on the little finger side of the palm is made up of which set of muscles?

Hypothenar muscles

Interosseous adductor compartment is formed between the dorsal and palmar ______ fasciae

Interosseous

Mallet finger is rupture or avulsion of the ______ tendon from a distal phalanx due to sudden forced hyperflexion

Long extensor

Which type of grip is used to grasp a plate?

Lumbrical grip

Both groups of interossei assist the lumbricals in flexing the ____ joints while helping to _____ the PIP + DIP joints

MP Extend

Dupuytrens most commonly affect ______ with a hereditary disposition

Males over 50

Carpal tunnel syndrome involves compression of which of the following nerves?

Median nerve

Lumbricals 1 & 2 are innervated by

Median nerve

_________ joints are formed at the knuckles between the heads of the metacarpal bones and bases of the proximal phalanges

Metacarpophalangeal

Intinsic muscles of the hand are situated on its ____ side and innervated by either ulnar or median nerve

Palmar

On the palmar side the central compartment is bounded superficially by the ______, laterally by the ____ compartment, medially by the hypothenar compartment, and dorsally by the palmar interosseous fascia

Palmar aponeurosis Thenar

Deep palmar arch gets its supply from _____ artery

Radial

Which carpal bone makes up the floor of the anatomical snuffbox and is the most frequently fractured carpal bone?

Scaphoid bone

-The patients medical history states that the patient sustained multiple deep lacerations on the palm of his hand and anterior surface of his wrist. During your examination, you put a piece of paper between adjacent surfaces of the patient's index and middle fingers and found him unable to squeeze them together with sufficient force to hold the paper. What muscles are being tested?

Second dorsal and first palmar interosseous muscles

On the back of the hand _______ space is between two fasciae

Subaponeurotic

If the PIP joint becomes hyperextended and the DIP joint flexed due to contracture of interosseous muscles, laxity of the volar plate or musculature imbalance, a ______ deformity results; it also occurs commonly in rheumatoid arthritis

Swan-neck

Blood supply from the hand is from ____ arteries

Ulnar and radial


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