• J Chin Med Assoc · Apr 2023

    Using trident distal radial locking plate to fix the fracture of distal radius volar rim.

    • Yin-Ming Huang, Chun-Yu Chen, Kai-Cheng Lin, Wei-Yi Lai, Yi-Ying Lin, Yun-Ju Fu, and Yih-Wen Tarng.
    • Department of Orthopedics, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, ROC.
    • J Chin Med Assoc. 2023 Apr 1; 86 (4): 426430426-430.

    BackgroundThe volar locking plates have been widely used in a variety of distal radius fractures, but they still have several limitations when dealing with small fragments located around the watershed line with widely reported complications. The volar rim fragments play a critical role in radiocarpal joint stability and failing to secure the volar rim fragment usually results in carpal instability, subluxation, or even dislocation. This study investigates clinical outcomes in the use of a novel implant, the Trident distal radial (TDR) locking plate to treat distal radius fracture with the intermedium column edge (lunate fossa volar rim) fragment involvement.MethodsA retrospective study of 25 patients was conducted, all patients had intermedium column fractures with lunate fossa volar rim involvement and treat with the TDR between January 2016 and December 2019. The clinical assessment outcomes included VAS Pain, PRWE, and DASH scores. Objective measurements included ROM of the injured wrist and grip strength. Final radiographs were used to evaluate radial inclination, volar tilt, ulnar variance, and distal radioulnar joint instability. Secondary operations related to hardware complications were also recorded.ResultsThe outcome revealed that the mean VAS Pain Score was 1.3, mean DASH score was 10.5, and mean PRWE score was 9.3. Objective measurements revealed good ROM recovery and an 89% gripping strength recovery compared with contralateral hand. Radiographic measurements revealed good maintenance of volar tilt, radial inclination, and mean ulnar variance. There were no complications related to the implant and all fracture sites were union.ConclusionWe believe that the TDR provided more stable fixation among distal radial fractures that predominantly involved the intermedial column and volar rim fragment, and allowing early rehabilitation. We could obtain excellent results in the wrist ROM, gripping power, and Pain Score (VAS).Copyright © 2023, the Chinese Medical Association.

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