Figure 2.

Hemicallotasis osteotomy using the Orthofix T-garche as external fixator. A. Successive lengthening takes place. The HKA angle is slowly normalized and the frame is locked at the desired angle. The frame is kept until bone healing. B. When sufficient callus appears to be present by ultrasound and radiography, the frame is removed temporarily. The patient is allowed to bear weight before the final decision to remove the frame. This decision is made blind regarding the pharmacological treatment. C. Radiograph showing a healed osteotomy at 1.5 years.