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19 Cards in this Set
- Front
- Back
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How many joints of the wrist are there?
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six
1. distal radioulnar 2. radiocarpal 3. intercarpal 4. midcarpal 5. carpometacarpal 6. metacarpophalangeal |
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Which ligaments are on the palmar side ofthe wrist
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1. Transverse carpal ligament
2. palmar radiocarpal ligamen 3. Palmer ulnocaprla ligament |
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What keeps all of the bones of the wrist in place?
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Multiple ligaments on the dorsal and palmar side of the wrist.
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Which ligament is on the dorsal side of the wrist
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Dorsal Radiocarpal ligament
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which three nerves supply the wrist?
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Radial, Ulnar, and Median Nerve
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What is a Colles fracture
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A fracture caused by falling and hyperextending the wrist (most common)
-Radius is usually displaced distally "silver fork deformity" |
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What is a Smith's Fracture
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A fracture caused by fallijng and hyperflexing the wrist
-"garden spade deformity" -Radius usually displaced anteriorly |
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What bone is most commonly damaged in a wrist fracture
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the Scaphoid
-Usually caused by falling on an outstretched hand |
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What are the symptoms of a fracture of the scaphoid bone
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-Pain in anatomical snuffbox
-Potential for avascular necrosis -Result in demineralization of the scaphoid from lack of use, and it will appear dark on the x-ray |
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A scaphoid fracture often damages what major artery of the depalmar arch?
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The radial artery
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Hook hamate fractures are often caused by
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playing sports such as tennis, baseball and golf. Causes problems with the hypothenar muscles because they attach to the hook of the hamate.
-Often goes undiagnosed until flexor tendon ruptures |
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Which ligaments attach to the Palmar Aponeurosis
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-Fibrous digital sheath
-Superficial transverse metacarpal ligament -Commissural ligaments |
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Define Dupuytren's Contracture
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hereditary thickening & shortening of palmar aponeuroses
- Nodules form in the fascia which causes contraction of the fingers (4th and 5th) -Treated with surgery |
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What are the Ligaments of the Metacarpophalageal joints
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palmer ligament
annular ligament deep transverse metacarpal ligaments |
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What is the function of the metacarpophalangeal joint ligaments
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They allow side to side movement when fingers are extended and little movement when flexed
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What is gamekeepers thumb?
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Sprain or tear of ulnar collateral ligament at the MP joint of the thumb
-causes hyperextension of the thumb |
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Name the two parts of the fibrous digital sheaths
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Annular part: goes around the tehndon and attaches to the joint
Cruciate part: forms and "X" |
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What is Digital N. Compression
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a painful result of aggrevated or inflammed synovial sheath
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Trigger Finger
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Swelling or inflammation of the tendon that runs through the sheath (tunnel) of the finger caused by constant flexion or compression of the tendon
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