Ann Plast Reconstr Surg | Volume 2, Issue 3 | Case Report | Open Access
Strijbosch R1*, Dijksterhuis A2 and van der Heijden B2
1Department of Plastic Surgery, Albert Schweitzer Hospital, Netherlands
2Department of Plastic & Reconstructive Surgery, Jeroen Bosch Hospital, Netherlands
*Correspondance to: Robbert Strijbosch
Fulltext PDFWe present a case of irreducible palmar dislocation of the thumb metacarpophalangeal joint that has never been described before. Palmar dislocations of the MCP joint are uncommon, as only 25 cases have been described in the literature up to date. Most of those were irreducible due to extensor tendon interposition and required open reduction. All of these injuries were associated with UCL ruptures. In our case a 50-year old male presented with a thumb injury after he fell on his hand during the yearly Carnival festivities. A palmar dislocation of the thumb was diagnosed but reduction failed in the ER. Upon surgical exploration the volar plate was intact and the flexor tendon in its anatomical position. A dorsal approach revealed palmar entrapment of the extensor pollicis longus and brevis around the radial condyl of the metacarpal head and into the joint. There was an additional RCL rupture. After the extensor tendons were relocated and the RCL repaired, the MCP joint was stable. This is the first report of palmar thumb MCP dislocation due to extensor interposition that is associated with RCL rupture. A primary dorsal approach seems advisable in this type of injury.
Metacarpophalangeal joint; Palmar dislocation; Radial collateral ligament rupture
Strijbosch R, Dijksterhuis A, van der Heijden B. Palmar Dislocation with Extensor Tendon Interposition and Radial Collateral Ligament Rupture of the Thumb Metacarpophalangeal Joint: A Case Report. Ann Plast Reconstr Surg. 2018;2(3):1019.