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Arch Hand Microsurg > Volume 22(2); 2017 > Article
Journal of the Korean Society for Surgery of the Hand 2017;22(2):117-121.
Published online June 30, 2017.
DOI: https://doi.org/10.12790/jkssh.2017.22.2.117   
Perilunate Injury Combined with Lunate Fracture
Hyun Soo Park, Sung Jae Kim, Sung Bae Park, Kwang Hyun Lee
1Department of Orthopedic Surgery, Hanil General Hospital, Seoul, Korea.
2Department of Orthopaedic Surgery, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea.
3Department of Orthopaedic Surgery, Hanyang University Hospital, Seoul, Korea. leegh@hanyang.ac.kr
Received: 30 October 2016   • Revised: 7 March 2017   • Accepted: 22 March 2017
We present an atypical case of combined comminuted lunate fracture and the scaphoid waist fracture, chip fracture of triquetrum and pisiform. Comminuted scaphoid waist fracture was caused by forced hyperextension of the wrist, similar mechanism to stage I of progressive perilunate instability (PLI), and lunate fracture might be caused by axial compression force, does not appear on the original theory of PLI. We performed closed reduction and screw fixation for the scaphoid fracture and immobilized and mildly distracted the wrist joint with the use of a bridging external fixator to prevent further collapse of comminuted lunate by neutralizing the compression force imposed by the capitate on the lunate. We achieved excellent radiological and clinical outcomes at 29-months of follow-up. We aimed to introduce this rare injury and clinically important points in its treatment with the review of the literature.

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