en جراحی زانو Knee surgery Introduction: Metacarpophalangeal (MCP) joints dislocations are rare, especially the simultaneous complex dislocations of four MCP joints. Although there are over 100 reported cases of MCP joint dislocation, the vast majority involves the index finger and is extremely rare in the long or ring fingers. Up to present, only three cases of simultaneous complex dorsal dislocation of four joints were described in the literature. Dislocations,Metacarpophalangeal Joint,Volar Plate 0 0 http://jros.iums.ac.ir/browse.php?a_code=A-10-39-61&slc_lang=en&sid=1 Mehran Razavipour 10031947532846004558 10031947532846004558 Yes Orthopedic Research Center, Mazandaran University of Medical Sciences, Sari, IR Iran Masoud Shayesteh Azar 10031947532846004559 10031947532846004559 No Orthopedic Research Center, Mazandaran University of Medical Sciences, Sari, IR Iran Mohammad Hossein Kariminasab 10031947532846004560 10031947532846004560 No Orthopedic Research Center, Mazandaran University of Medical Sciences, Sari, IR Iran Seyed Mohamad Mehdi Daneshpoor mdaneshpour@mazums.ac.ir 10031947532846004561 10031947532846004561 No Orthopedic Research Center, Mazandaran University of Medical Sciences, Sari, IR Iran