Krähenbühl Nicola, Siegler Lena, Deforth Manja, Zwicky Lukas, Hintermann Beat, Knupp Markus
Department of Orthopaedic Surgery, Kantonsspital Baselland, Rheinstrasse 26, 4410 Liestal, Switzerland.
Department of Orthopaedic Surgery, Kantonsspital Baselland, Rheinstrasse 26, 4410 Liestal, Switzerland.
Foot Ankle Surg. 2019 Apr;25(2):143-149. doi: 10.1016/j.fas.2017.10.004. Epub 2017 Oct 18.
Although it has been proposed that in mid-stage ankle osteoarthritis, the subtalar joint can compensate for deformities above the ankle joint, the evidence is weak. We thus investigated subtalar joint alignment in different stages of ankle osteoarthritis using weightbearing computed tomography (CT) scans.
The subtalar joint of 88 patients with osteoarthritis of the ankle joint and a control group of 27 healthy volunteers were assessed. Subgroups were performed according to the ankle deformity (varus and valgus) and stage of ankle joint osteoarthritis. Subtalar joint alignment was assessed on weightbearing CT scans.
A more valgus subtalar joint alignment was found in patients with varus ankle osteoarthritis. No significant difference of the subtalar joint alignment was evident when comparing different stages of ankle osteoarthritis.
Varus ankles compensate in the subtalar joint for deformities above the ankle joint. Compensation does not correlate with the stage of ankle osteoarthritis.
尽管有人提出，在中期踝关节骨关节炎中，距下关节可代偿踝关节以上的畸形，但证据不足。因此，我们利用负重计算机断层扫描（CT）对踝关节骨关节炎不同阶段的距下关节对线情况进行了研究。
对88例踝关节骨关节炎患者及27名健康志愿者对照组的距下关节进行评估。根据踝关节畸形（内翻和外翻）及踝关节骨关节炎分期进行亚组划分。在负重CT扫描上评估距下关节对线情况。
内翻型踝关节骨关节炎患者的距下关节对线更呈外翻。比较踝关节骨关节炎不同阶段时，距下关节对线无明显差异。
内翻型踝关节在距下关节代偿踝关节以上的畸形。代偿与踝关节骨关节炎的分期无关。
