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Table 2 Pitfalls to to avoid correction error

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