Fig. 2.

A 24-year-old man with 2-cm shortening, 10° external rotation, valgus and slight extension deformity of his left femur due to partial lateral growth arrest after traumatic epiphysiolysis type Salter-Harris II of the distal femur at the age of 13 years. The centre of rotation analysis (CORA) is, therefore, juxtaarticular at the level of the growth plate. a Taylor Spatial Frame (hexapod) with hybrid fixation by tensioned Ilizarov wires and lateral half-pins. b Three weeks after the index procedure (percutaneous metaphyseal distal femur drill holes osteotomy completed by an osteotome) and 7 days of distraction with a rate of 1 mm per day and a rhythm of 4 × 0.25 mm per day. The osteotomy gap is opening correctly. c 3.5 months follow-up. Timely ossification of the regenerate bone. Since the osteotomy is proximal to the CORA, a slight lateral translation is necessary to compensate for the medial shift of the condylar fragment with varisation. In the lateral view, a minor correction into flexion with slight anterior translation was achieved as planned