From: How to achieve an optimal alignment in medial opening wedge high tibial osteotomy?
Factors | Pitfalls to avoid | |
---|---|---|
Undercorrection | Preoperative amount of varus deformity Lateral hinge fracture Fixation failure (insufficient plate fixation) | Placing the lateral hinge at “Safe zone” Fixation with locking plate |
Overcorrection | Severity of varus deformity (the amount of correction angle) Latent medial soft tissue laxity Intraoperative releasing of superficial medial collateral ligament | Taking preoperative valgus stress X-ray and adjusting latent medial laxity from target correction angle Using hypomochlion (valgus 2° of mFTA) as the target point |