Term
| Name the carpal bones starting at the lateral side of each row. |
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Definition
Proximal row- scaphoid, lunate, triquetrum, pisiform
Distal row: trapezium , trapezoid, capitate, hamate |
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Term
| Fracture of what carpal bone results in tenderness and pain in the anatomical snuffbox? |
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Definition
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Term
| At what joints do pronation and supination occur? |
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Definition
| Proximal radioulnar joint |
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Term
| Name the muscles on the thenar eminence. What nerve innervates these muscles? |
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Definition
Fleshy part at the base of the thumb
Opponens pollicis
Flexr pollicis brevis
Innervated by MEDIAN NERVE |
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Term
| Which tendons of the flexor forearm muscles attach to the middle phalanges of the non-thumb digits? |
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Definition
| Flexor digitorum superficialis |
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Term
| Which artery gives rise to the superficial palmar arch?... to the deep palmar arch? |
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Definition
Superficial-ulnar artery
Deep- radial artery |
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Term
| What structure is affected in the condition known as Dupuytren's contracture? |
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Definition
| Palmar fascia and aponeurosis |
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Term
Name the muscle(s) that are primarily responsible for each of the following actions:
1) Opposition of the thumb
2)Abduction of non-thumb digits
3)Adduction of the non-thumb digits
4)Flexion of MP joints
5)Extension of IP joints
6)Flexion of DIP joints
7) Flexion of PIP joints |
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Definition
1) Opposition of the thumb:
- opponens pollicis
2)ABduction of non-thumb digits
-dorsal interossei
3)ADduction of non-thumb digits
-Palmar interossei
4)Flexion of MP joints
-lumbricals
5)Extension of IP joints
-when lumbricals and interossei work together
-May assist due to attachment to extensor expansion - ext digitorum, ext digiti minimi, ext indicis
6) Flexion of DIP joints
-flexor digitorum profundus
7) Flexion of PIP joints
-Flexor digitorum superficialis |
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Term
| What nerve innervates the majority of the intrinsic muscle of the hand? What intrinsic muscles do it not innervate? |
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Definition
| Ulnar nerve; Median nerve - thenar muscles , lateral 2 lumbricals (thumb side) |
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Term
| What nerve supplies cutaneous sensation to the tip of the thumb?...to the tip of the middle finger?... to the tip of the little finger? |
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Definition
Thumb= median
Middle=median
Little= ulnar |
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Term
Name the nerve that is injured in each of the following conditions:
Wrist drop
Claw hand
Hand of benediction
Ape hand
Carpal tunnel |
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Definition
Wrist drop- radial
Claw hand- long standing ulnar nerve injury
Hand of benediction- high median nerve injury
Ape hand- distal median nerve injury
Carpal tunnel syndrome- median |
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Term
| What nerve does not supply any intrinsic hand muscles? What area does it supply in the hand? |
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Definition
| Radial nerve; Sensory innervation of posterior , lateral hand |
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Term
| What type of injury is often called "shoulder separation"? |
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Definition
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Term
| What ligament surrounds the head of radius? |
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Definition
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Term
| What condition results in inflammation of the synovial sheaths, which enclose the tendons of the forearm muscles traveling over the phalanges? |
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Definition
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Term
| Excessive extension and lateral rotation of the humerus results in the dislocation of what joint? |
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Definition
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Term
| What nerve may be damaged with the injury to the glenohumeral joint (previous question)? |
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Definition
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Term
| If a patient cannot flex the DIP joint of a digit held in the extended position , what muscle tendon is damaged? |
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Definition
| Flexor digitorum profundus |
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Term
| Inability to oppose the thumb is due to what nerve? What muscle is damaged? |
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Definition
| Median nerve; opponens pollicis |
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Term
| Damage to the ulnar nerve weakened adduction of the non-thumb digits. What muscles were affected? |
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Definition
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