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2Frontal plane osteotomy

Preoperative planning

Preoperative planning is very important when performing an osteotomy for deformity correction.
The frontal plane osteotomy is performed with the mid-portion of the osteotomy (b) in the frontal plane midway between the dorsal and palmar/plantar cortex centered over the deformity.
The proximal plane of the osteotomy (a) is performed parallel to  the proximal joint surface of McIII/MtIII.
The distal plane of the osteotomy (c) is performed parallel to the distal joint surface of McIII/MtIII.