997. Complex/complete dislocation of MCP Rx // Forced radial deviation (abduction) of thumb causes what injury? How do you test for it? September 18th, 2009 by reuben in hand Back Top Tags: card 996. How to reduce DIP/PIP dislocations / If avulsion #? / Rx // Which looks worse on presentation: an MCP subluxation or dislocation? 998. What is positive valgus stress testing for UCL injury? Get radiographs? Rx // Why is hand position important in tendon injury? // What is mallet finger? Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.