Use of Implant-Mediated Guided Growth With Tension Band Plate in Skeletally Immature Patients With Knee Pathology: A Retrospective Review.

Abstract

Background: Skeletally immature patients with coronal plane angular deformity (CPAD) may be at increased risk for intra-articular pathology and patellofemoral instability (PFI). These patients may be candidates for implant-mediated guided growth (IMGG) procedures with tension band plates to address CPAD in addition to procedures for concomitant knee pathology. However, there are limited data on performing these procedures simultaneously. Questions/Purpose: We sought to demonstrate the feasibility of combined procedures to address both knee pathology and concomitant CPAD using IMGG in skeletally immature patients. Methods: We conducted a retrospective review of skeletally immature patients who underwent IMGG and concomitant surgery for anterior cruciate ligament reconstruction, osteochondritis dissecans repair, meniscus pathology, or PFI at a single institution by 2 surgeons between 2008 and 2019. Data on demographics, surgical details, follow-up, and complications were recorded. Deformity correction was assessed in a subset of eligible patients. Results: Of 29 patients meeting inclusion criteria, deformity correction was assessed in a subset of 17 patients (15 valgus, 2 varus). At final follow-up, 16 of 17 patients had mechanical tibiofemoral (mTFA) angles of <5° of varus or valgus. One patient developed "rebound" valgus >5° after plate removal. Conclusions: The IMGG performed in the setting of treating intra-articular knee pathology is feasible and should be considered for skeletally immature patients with CPAD undergoing surgery for concomitant knee pathology.