Pure Bilateral Perilunate Dislocation of the Carpus: An Uncommon Case in a Military Parachutist during a Jumping Accident

INTRODUCTION: Perilunate dislocations are uncommon injuries requiring high-energy trauma. They are responsible for serious lesions that can compromise the function of the limb. We report a case of pure bilateral perilunate dislocation in a parachutist while landing. CASE REPORT: The case involved a 30-year-old military officer of special forces who underwent closed trauma to both wrists following an automatic opening parachute jump. He had first consulted a garrison medical center where a wrist sprain had been treated. Given the persistence of the pain, he was referred to our clinic 2 months later. X-rays of the wrists showed bilateral perilunate dislocation, type 1 on the right and type 3 on the left, according to the Witvoët and Allieu classification. Surgery was indicated with 2 open scapholunate and lunotriquetral pins. The post-operative course was simple, with a complete resumption of professional activity after 9 months. CONCLUSION: Perilunate dislocations of the carpus are uncommon injuries that often go unnoticed. They can also occur after a parachute landing. Treatment must be surgical.