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19 Cards in this Set
- Front
- Back
Distal Radioulnar Joint loose/close pack
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Loose: 10 deg of sup
Close: 5 deg of sup |
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Wrist Motions: Flexion/Extension axis through head of the capitate
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Flexion: 60% midcarpal, 40% radiocarpal
Extension: 66.5% radiocarpal, 33.5% midcarpal |
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1st CMC Joint Capsular Pattern
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Abduction most limited followed by extension
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Colles' Fracture
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Most common radial fracture. Typically occurs in elderly adults. Occurs within 1" of the carpal articula rsurface. The distal fragment is angulated dorsally and may be dorsally and radially displaced
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Colles' Fracture Signs and Symptoms
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1. immediate (acute) pain
2. tenderness, bruising, and swelling 3. May have abnormal wrist posture 4. ROM is guarded due to pain |
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Scaphoid fracture
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1. most common fracture of carpal bones
2. pain in anatomical snuff box with overpressure into ulnar deviation while the forearm is pronated 3. tenderness in anatomical snuff box |
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Scapholunate Instability
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1. most common form of instability of carpal bones
2. involves a tear of the scapholunate interosseous ligament: scaphoid shift test |
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Distal Radio-unlar instability
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Since the TFCC is the primary stabilizer of this joint, injury to the TFCC may result in joint instability
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Carpal Tunnel Syndrome Description
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Any process which decreass the volume of the tunnel or increaes the volume of its contents will crowd the median nerve interfering with the blood supply and cause it to malfunction
Early malfunction: dysesthesia Late malfunction: thenar muscle atrophy and weakness |
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CTS Etiology
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1. Deformity of a Colles' or carpal fracture
2. Arthritic spurs 3. Thickening of flexor retinaculum 4. Fluid retention 5. Carpal synovitis 6. Tenosynovitis |
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CTS Signs & Symptoms
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1. Paresthesia and dysesthesia in the median nerve distribution of the fingers
2. Many complain of pain in wrist and symptoms at night 3. increased symptoms during sleeping hours and during sustained manual activity, like driving or knitting 4. atrophy of thenar muscles 5. Sensory loss: Palmar and dorsal thumb, index, iddle and lateral half of ring finger 6. Weakness: FPB, APB, OP, lateral two lumbricals 7. Positive carpal compression, wrist flexion (Phalen's) and percussion (Tinel's) tests |
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Dupuytren's Contracture
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Palmar fascia may undergo a nodular, hypertrophic degeneration. Contraction of the fascia pulls the finger into a fixed flexion deformity at the MP joint and/or PIP joint. Usually occurs in the 4th or 5th digits. Etiology unknown.
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Trigger Finger
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Fibrous sheath over the flexor tendon at each MP joint thickens, which narrows the space beneath the sheath while the underyling segments of the tendon enlarge as a nodule. Passage of the nodule under the thickened fibrous sheath produces a sensation of snapping
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Trigger Finger Signs & Symptoms
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1. Complain of snapping when actively flexing or extending the affected finger
2. Nodule may be palpable jsut proximal to the affected MP joint 3. Snapping during active flexion palpable over the palmar aspect of MP Joint |
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Dequervain's Tenosynovitis
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Tendons of APL and EPB share a common tendon sheath as they cross the radial styloid. The sheath can become inflammed from repetitive activity. Digital branches of the radial nerve which course over the tendons may become irritate as well.
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Dequervain's Signs and Symptoms
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1. Pain in the radial aspect of the wrist and thumb which may be intesified by wrist or thumb movement
2. May complian of pain and paresthesias in the dorsum of the thumb, index and middle fingers 3. Swelling may be palpable or visible over the tendons 4. Positive Finkelstein's Test 5. Pain with isometric resisted thumb extension or abduction |
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Tendon Lacerations in the Hand or Wrist
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Requires surgery. Due to intricate gliding of tendons in hand needed for normal function, scarring can have a dramatic effect on function by restricting gliding. Timely mobilizing of the tendons using dynamic spinting is crucial for best outcome
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Ganglion
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Cystic masses (synovial herniation) that emerge from tendon sheaths or joint capsules
) |
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Additional entrapment neuropathies
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ulnar nerve at elbow and wrist
radial nerve at elbow |