Wrist and Hand
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78 terms
Terms | Definitions |
|---|---|
 Effect of wrist flexors and extensors without retinacula in place | Bowstring |
| Any lesion that significantly reduces the size of the carpal tunnel | Carpal tunnel syndrome |
| Diminished sensation | Hypoesthesia |
| Compartment containing muscles that act on the pinky finger: Abductor digiti minimi Flexor digiti minimi brevis | Opponens digiti minimi Hypothenar compartment |
| Group of muscles protruding from medial side of palm | Hypothenar eminence |
| Retains the extensor or flexor tendons in position, and prevents bowstringing | Retinaculum |
| Compartment containing muscles that act on the thumb: Abductor pollicic brevis | Flexor pollicis brevis Opponens pollicis Thenar compartment |
| Group of muscles protruding from lateral side of palm | Thenar eminence |
| What tendon is found within the Y-shaped split of the flexor retinaculum? | Tendon of the flexor carpi radialis |
| What structure forms the anterior wall of the carpal tunnel? | Flexor retinaculum |
| What forms the posterior wall of the carpal tunnel? | Carpal bones |
| Recognize names of structures that are within the carpal tunnel given a list of putative candidates. | Flexor pollicis longus tendon |
| Which digits of the hand are supplied by the terminal sensory branches of the median nerve? | Lateral 3 1/2 digits (Thumb, index, middle, half of ring) |
| What causes carpal tunnel syndrome? | Any lesion that significantly reduces the size of the carpal tunnel |
| What nerve is involved with carpal tunnel syndrome? | Median nerve |
| What specific portion of the nerve that is generally involved with carpal tunnel syndrome is in fact not involved, and why is it not? | Palmar cutaneous branch of median nerve Arises proximal to the carpal tunnel, doesn't pass through it (Sensation in central palm remains unaffected) |
| Which digits of the hand exhibit hypoesthesia or anesthesia with carpal tunnel syndrome? Which digits do not? | Lateral 3 1/2 digits (Thumb, index, middle, half of ring) Pinky, medial half of ring finger = innervated by ulnar nerve |
| Does the palm of the hand exhibit hypoesthesia or anesthesia with carpal tunnel syndrome? | No--Palmar cutaneous branch of median nerve arises proximal to carpal tunnel |
| Describe the manifestations of carpal tunnel syndrome regarding cutaneous sensation. | Hypoesthesia or anesthesia may occur |
| Describe the manifestations of carpal tunnel syndrome regarding motor (muscle) function. | Can result in progressive loss of coordination and strength in the thumb due to involvement of thenar branch of median nerve Unable to oppose the thumb |
| Name the muscles of the thenar compartment. | Abductor pollicis brevis Flexor pollicis brevis Opponens pollicis |
| Name the muscles of the hypothenar compartment. | Abductor digiti minimi Flexor digiti minimi brevis Opponens digiti minimi |
| Pollicis refers to muscles of the ________ and digiti minimi refers to muscles of the ________. | Thumb Pinky finger |
| 9 | Median nerve |
| 8 | Radial nerve |
| 7 | Ulnar nerve |
| From a list of putative candidates, identify boundaries of, and structures within the anatomical snuff box. | Tendon of abductor pollicis longus Tendon of Extensor pollicis brevis Tendon of extensor pollicis longus |
| From a list of putative candidates, identify structures within the anatomical snuff box. | Radial artery (floor) Palpable radial styloid process, 1st metacarpal Scaphoid and trapezium can be felt in floor |
| What arteries furnish blood supply to the hand? | Branches of ulnar, radial arteries |
| What arteries form the superficial palmar arch? | Supeficial branch of ulnar artery Superficial branch of radial artery |
| What arteries form the deep palmar arch? | Deep branch of ulnar artery Deep branch of radial artery |
| 1 | Ulnar artery |
| 2 | Ulnar nerve |
| 3 | Carpal tunnel |
| 4 | Flexor digitorum superficialis tendon(s) |
| 5 | Hamate |
| 6 | Flexor digitorum profundus tendon(s) |
| 7 | Capitate |
| 8 | Trapezoid |
| 9 | Flexor pollicis longus tendon |
| 10 | Trapezium |
| 11 | Synovial sheath |
| 12 | Flexor carpi radialis tendon |
| 13 | Palmar carpal ligament |
| 14 | Median nerve |
| 15 | Palmaris longus tendon |
| 16 | Flexor retinaculum |
| 1 | Tendon of abductor pollicis longus |
| 2 | Tendon of extensor pollicis brevis muscle |
| 3 | Tendon of extensor pollicis longus muscle |
| 4 | Anatomical snuffbox |
| ... | Head of ulna |
| ... | Interphalangeal joint |
| ... | Hypothenar eminence |
| ... | Metacarpophalangeal joint |
| ... | Pisiform bone |
| ... | Tendon of flexor carpi radialis muscle |
| ... | Tendon of flexor carpi ulnaris muscle |
| ... | Tendon of flexor digitorum superficialis muscle |
| ... | Tendon of palmaris longus muscle |
| ... | Styloid process of radius |
| ... | Styloid process of ulna |
| ... | Tendon of extensor digiti minimi muscle |
| ... | Tendon of extensor digitorum muscle |
| ... | Thenar eminence |
| ... | Flexor digitorum superficialis tendon |
| ... | Flexor digitorum profundus tendon |
| ... | Median nerve |
| Abductor pollicis brevis | Origin: Insertion: Action: Innervation: Arterial supply: |
| Flexor pollicis brevis | Origin: Insertion: Action: Innervation: Arterial supply: |
| Opponens pollicis | Origin: Insertion: Action: Innervation: Arterial supply: |
| Adductor pollicis | Origin: Insertion: Action: Innervation: Arterial supply: |
| Abductor digiti minimi brevis | Origin: Insertion: Action: Innervation: Arterial supply: |
| Flexor digiti minimi brevis | Origin: Insertion: Action: Innervation: Arterial supply: |
| Opponens digiti minimi | Origin: Insertion: Action: Innervation: Arterial supply: |
| Dorsal interosssei | Origin: Insertion: Action: Innervation: Arterial supply: |
| Lumbricals | Origin: Insertion: Action: Innervation: Arterial supply: |
| Palmar interosssei | Origin: Insertion: Action: Innervation: Arterial supply: |
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