Figure 4.

Arthroscopic view of medial varus gonarthrosis and radiograph after open-wedge high tibial osteotomy

1. Arthroscopic view, medial compartment with osteoarthritic cartilage defects in the area of the medial femoral condyle (F) and the medial tibial plateau (T).

2. Radiograph after open-wedge high tibial osteotomy in medial valgus gonarthrosis. The osteotomy was performed in a biplanar technique: horizontal osteotomy of the posterior two thirds of the tibia is performed first; this is followed by an osteotomy with a 110 degrees cut behind the tuberosity parallel to the ventral tibial shaft. The result of the correction is fixated with a plate fixatior.

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