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[Leg length changes after upper tibial osteotomy: analysis of different preoperative planning methods]
P Hernigou1, A Jaafar, A Hamdadou
1Hôpital Henri-Mondor, 51, avenue de Lattre-de-Tassigny, 94010 Créteil Cedex.
Summary
Opening wedge osteotomy results in the greatest lower limb length changes, followed by dome and closing wedge osteotomies. Mathematical analysis quantifies these differences for surgical planning.
Area of Science:
- Orthopedic surgery
- Biomechanical analysis
Context:
- Lower limb length discrepancy can result from various deformities and surgical interventions.
- Upper tibial osteotomy is a common procedure to correct deformities, but it can alter limb length.
Purpose:
- To mathematically analyze and compare the effects of opening wedge, closing wedge, and dome osteotomies on lower limb length.
- To provide a framework for predicting leg length changes based on osteotomy type and correction amount.
Summary:
- A mathematical model was used to calculate lower limb length changes for opening wedge, closing wedge, and dome osteotomies.
- Opening wedge osteotomy yielded the greatest length changes, followed by dome, then closing wedge.
- Tables and imaging methods are presented to aid in recognizing these differences.
Impact:
- This analysis helps surgeons anticipate and manage leg length alterations during upper tibial osteotomy.
- Provides valuable data for preoperative planning to achieve desired limb length outcomes.
- Facilitates informed decision-making regarding the choice of osteotomy technique.