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Decreased proximal interphalangeal joint flexion with extension of the metacarpophalangeal joint
54%
440/813
Decreased proximal interphalangeal joint flexion with flexion of the metacarpophalangeal joint
21%
168/813
Normal proximal interphalangeal joint flexion with flexion of the metacarpophalangeal joint
5%
38/813
Normal proximal interphalangeal joint flexion with extension of the metacarpophalangeal joint
2%
19/813
Increased proximal interphalangeal joint flexion with extension of the metacarpophalangeal joint
16%
133/813
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Extension of the metacarpophalangeal joint places tension on the intrinsic contribution to the extensor system via the lateral bands. Contracture of the intrinsics decreases the flexion at the proximal interphalangeal joint with the metacarpophalangeal joint placed in extension past neutral.
4.2
(13)
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