A 24-year-old female presented with reinjury of the ACL. She had undergone ACL reconstruction three years prior with a transtibial technique and hamstring autograft. Preoperative imaging revealed no excessive tunnel dilatation but identified a coronal malalignment of 5° varus and a sagittal malalignment with a high posterior tibial slope (PTS) of 18°—exceeding the normal upper limit of 12°.
The surgical team opted for a one-stage revision to correct the malalignment and perform the ACL reconstruction. To achieve precise correction, 3D-planned patient specific instrumentation (PSI) was employed, guiding a biplanar osteotomy that adjusted the PTS down to 10° and corrected the coronal alignment to 3.8° of valgus.
Watch the video below to learn more about the case.
