3.9 of 42 Ratings
A space-filling lesion leading to nerve compression in the area marked "X" in Figure A would manifest by which of the physical examination findings?
Inability to flex thumb
Inability to extend thumb
Inability to cross index and middle fingers
Inability to extend the proximal interphalangeal (PIP) joints of the index, long, ring, and small fingers
Inability to sense light touch at dorsal aspect of ring and small fingers
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A 75-year-old female presents with difficulty extending her fingers and thumb. Her exam is notable for subcutaneous nodules, ulnar deviation of the metacarpophalangeal joints, and swan neck deformities. The wrist radially deviates with extension. Extension cannot be actively initiated or maintained when her fingers are passively manipulated. Tenodesis is normal. What pathology would best explain her symptoms?
Attenuation of the sagittal bands
Peri-elbow synovitis causing nerve compression
Distal radioulnar joint synovitis
Compressive injury to the posterior interosseous nerve will lead to EMG fibrillations in which of the following muscles?
Extensor Carpi Radialis Longus/Extensor Carpi Radialis Brevis/Brachoradialis
Extensor Carpi Radialis Longus/Supinator/Abductor Pollicis Longus
Extensor Pollicis Longus/Supinator/Abductor Pollicis Longus
Brachoradialis/Supinator/Extensor Pollicis Longus
Extensor Pollicis Longus/Supinator/Abductor Pollicis Brevis