Proximal Tibiofibular Joint Instability: Outcomes After Combined Tibiofibular Joint and Lateral Collateral Ligament Reconstruction

Background: Proximal tibiofibular joint (PTFJ) instability is a relatively rare clinical condition, and the establishment of an evidence-based standard of care remains an ongoing challenge because of its low incidence in the literature. Current reports in the literature focus on isolated PTFJ reconstruction, and there remains to be any report on outcomes of PTFJ reconstruction performed concurrently with procedures for associated knee injuries, such as lateral collateral ligament (LCL) insufficiency coupled with tibiofibular instability. Purpose: To assess subjective and clinical outcomes after combined reconstruction of the LCL and PTFJ utilizing a semitendinosus allograft in the setting of anterior PTFJ instability and concomitant knee injuries requiring additional procedures. Study Design: Case series; Level of evidence, 4. Methods: A retrospective review was conducted on consecutive patients who underwent anatomic PTFJ reconstruction utilizing a semitendinosus allograft from 2016 to 2021, with a ≥2-year follow-up. Exclusion criteria included ipsilateral concomitant lower extremity fracture, prior knee surgery, previous diagnosis of connective tissue disorder, and postoperative follow-up