Hand and finger dislocations: Difference between revisions

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{{Hand and finger dislocation types}}
{{Hand and finger dislocation types}}


==MCP Ulnar Ligament Rupture==
==[[Metacarpophalangeal (MCP) ulnar ligament rupture]]==
*Also known as gamekeeper's thumb or skier's thumb
*Ulnar ligament ruptures at insertion into prox phalanx (due to radial deviation of MCP)
*X-ray (perform before joint stressing)
**Bony avulsion from insertion of UCL into proximal phalanx
**Associated condylar fracture
**Proximal phalanx volar subluxation and radial deviation suggests complete UCL rupture
*Exam
**Swelling and localized tenderness over ulnar border of joint
**Weakness of pinch
**Partial versus complete rupture
***Valgus stress testing with joint in full extension and in 30 deg of flexion
****>35 deg of joint laxity or 15 deg of laxity beyond that present in uninjured thumb is consistent w/ complete UCL rupture
 
====Management====
*Partial rupture
**Immobilize in [[thumb spica]] for 4wk
*Full rupture
**Referral within 1wk


==Differential Diagnosis==
==Differential Diagnosis==

Revision as of 11:47, 1 June 2015

Types

Hand and finger dislocations

Metacarpophalangeal (MCP) ulnar ligament rupture

Differential Diagnosis

Hand and finger injuries

See Also

References