Moličnik Andrej, Janša Jošt, Kocjančič Boštjan, Kralj-Iglič Veronika, Dolinar Drago
Department of Orthopaedic Surgery, University Medical Centre Maribor , Maribor , Slovenia.
Laboratory of Clinical Biophysics, Faculty of Health Sciences, University of Ljubljana , Ljubljana , Slovenia.
Comput Methods Biomech Biomed Engin. 2019 Nov;22(14):1107-1115. doi: 10.1080/10255842.2019.1634193. Epub 2019 Aug 20.
The biomechanical parameters of the hip joint articular surface were analysed in 141 adult hips after Legg-Calve Perthes Disease, and 114 contralateral unaffected hips (controls), by using HIPSTRESS mathematical models. Geometrical parameters, assessed from anteroposterior and axial radiograms, were used as input to models for resultant hip force and contact hip stress. Results confirm previous indications that head enlargement after the Legg-Calve-Perthes Disease compensates the values of hip stress. Furthermore, it was found that an increased risk for coxarthritis development after the disease is secondary to concomitant hip dysplasia, with considerable and statistically significantly lower centre-edge angle and unfavourable distribution of stress.
利用HIPSTRESS数学模型，对141例Legg-Calve-Perthes病成年患者的髋关节关节面生物力学参数进行了分析，并与114例对侧未受影响的髋关节（对照组）进行了对比。通过前后位和轴位X线片评估的几何参数被用作模型的输入，以计算髋关节合力和接触髋关节应力。结果证实了先前的研究结果，即Legg-Calve-Perthes病后股骨头增大可补偿髋关节应力值。此外，研究发现，该病后发生髋关节炎的风险增加是继发于合并髋关节发育不良，其中心边缘角显著降低且应力分布不利，具有统计学意义。
