-
Fracture of surgical neck or dislocation of humerus injures...
- Axillary n.
- (posterior circumflex humeral a. may be lacerated)
-
Pancoast tumor of lung compresses...
Lower trunk of brachial plexus (Klumpke's paralysis)
-
Incorrect use of a crutch compresses...
Radial n.
-
Winged scapula
Injury to long thoracic nerve, usually as it passes superior to serratus anterior
-
Supracondylar fracture of humerus compresses...
- Median nerve
- May compress branchial artery, resulting in ischemia of hand and forearm (will cause flexion at wrist and fingers)
-
Fracture of medial epicondyle of humerus lesions...
Ulnar n.
-
Carpal tunnel syndrome and dislocation of lunate lesions...
Median n.
-
Trauma to heel of hand or fracture of hook of hamate lesions...
Ulnar n.
-
Dislocation of lunate
Lunate slides into carpal tunnel, may cause carpal tunnel syndrome
-
Canal of Guyon contains...?
Ulnar n, a, and v
-
Scaphoid fracture
- Pain and tenderness over snuffbox
- Avascular necrosis of proximal scaffoid
-
If axillary artery is occluded, anastamoses develop between...?
Circumflex scapular and thoracodorsal branches of subscapular arteries
-
Midshaft fracture of humerus lesions...
- Radial n.
- (deep brachial a. may be lacerated)
-
Subluxation of radius stretches...
Distal radial n.
-
Loss of sensation on back of hand indicates...
Radial n. injury
-
Wrist drop indicates...
Radial nerve injury (radial innervates most of the hand extensors)
-
Ape hand (thumb on same plane as other fingers)
Proximal median n. injury (fracture of supracondylar humerus)
-
Ulnar deviation upon wrist flexion
Distal median nerve lesion (carpal tunnel, dislocation of lunate)
-
Radial deviation upon wrist flexion
Proximal lesion of the ulnar nerve (fracture of medial epicondyle of humerus)
-
Clawing of 4th and 5th digits ("hand of benediction")
Distal ulnar lesion (fracture of hook of hamate)
-
Waiter's tip position
Erb-Duchenne palsy, compression of C5-6
-
Total claw hand
Klumpke's palsy (lesion of C8-T1), loss of function of lumbricals
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