Abstract
Background: A deflexion osteotomy may reduce anterior translational forces imparted upon an anterior cruciate ligament (ACL) reconstruction (ACL-R) graft, thereby reducing risk of ACL graft failure in patients with excessive congenital posterior tibial slope. Indications: A 13-year-old female competitive soccer player with 13.7° of posterior tibial slope presented with failure of a prior ACL-R. Technique Description: A vertical incision is made along the medial border of the patellar tendon and the proximal tibia is exposed. The planned osteotomy is templated under fluoroscopic guidance by placement of 2.4-mm Steinmann pins. A supra-tubercular deflexion osteotomy is made with a sagittal saw and osteotomes, with care to maintain the posterior cortical hinge. Compression staples are utilized for fixation of the osteotomy site. Revision ACL-R is then performed. Results: There were no immediate complications following surgery. Surgical management led to radiographic improvement of the patient's posterior tibial slope and clinical resolution of anterior translational knee instability. Discussion/Conclusion: The senior author's preferred technique for a tibial supra-tubercular deflexion osteotomy in association with a revision ACL-R is presented. A deflexion osteotomy is a surgical option for patients with excessive (>12°) posterior tibial slope in the setting of a prior failed ACL-R. This case demonstrates the efficacy of a tibial supra-tubercular deflexion osteotomy in the revision ACL-R setting by reducing posterior tibial slope, thereby lessening anterior translational forces on the ACL graft in a patient at high risk of graft failure. Patient Consent Disclosure Statement: The author(s) attests that consent has been obtained from any patient(s) appearing in this publication. If the individual may be identifiable, the author(s) has included a statement of release or other written form of approval from the patient(s) with this submission for publication.
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