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Changes in Hindfoot Alignment After High or Low Tibial Osteotomy.
Jun Young Choi1, Si Jung Song1, Sung Jung Kim2
11 Department of Orthopedic Surgery, Inje University, Ilsan Paik Hospital, Goyang-si, Gyeonggi-do, South Korea.
Foot & Ankle International
|May 16, 2018
Summary
High tibial osteotomy (HTO) corrected hindfoot valgus, while low tibial osteotomy (LTO) shifted hindfoot alignment towards valgus in patients with knee or ankle arthritis.
Area of Science:
- Orthopedic surgery
- Biomechanics
- Radiographic analysis
Background:
- Tibial osteotomy is a common procedure for knee and ankle arthritis.
- Understanding hindfoot alignment changes post-osteotomy is crucial for surgical outcomes.
Purpose of the Study:
- To evaluate hindfoot alignment changes after high tibial osteotomy (HTO) and low tibial osteotomy (LTO).
- To assess the impact of these osteotomies on varus or valgus deformities.
Main Methods:
- Retrospective review of radiographic findings in patients undergoing HTO or LTO for knee/ankle arthritis.
- Measurement of hindfoot alignment parameters: hindfoot alignment view angle (HAVA), hindfoot alignment ratio (HAR), and hindfoot moment arm (HMA).
- Serial radiographic measurements at 3, 6, and 12 months postoperatively.
Main Results:
- HTO group showed significant increases in HAVA and HMA at 12 months postoperatively.
- Significant increase in HAR observed in the HTO group, indicating a shift towards valgus.
- LTO group demonstrated significant decreases in HAVA, HAR, and HMA, indicating a shift to valgus alignment.
Conclusions:
- HTO effectively decreased hindfoot valgus deviation, approaching normal values.
- LTO resulted in a change from preoperative mild hindfoot varus alignment to valgus deviation.
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