Yun Andrew G, Qutami Marilena, Carles Eric
Orthopaedic Surgery, Center for Hip and Knee Replacement, Providence Saint John's Health Center, Santa Monica, USA.
Center for Hip and Knee Replacement/Orthopaedic Surgery, Providence Saint John's Health Center, Santa Monica, USA.
Cureus. 2021 Apr 19;13(4):e14563. doi: 10.7759/cureus.14563.
Recent concerns have been raised regarding a higher failure rate with smaller size Corail stems. This case series examines early aseptic loosening with smaller stems in three large male patients with Dorr A bone. Each stem was fluoroscopically aligned and sized until stable with axial and rotational stress. In each case, failure occurred within six months due to symptomatic metaphyseal debonding. Careful analysis suggests a correlation of failure to small size stems that are comparatively 1) undersized relative to the metaphysis, 2) undersized relative to patient body mass index, and 3) undersized relative to the amount of offset created.
最近，人们对尺寸较小的Corail股骨柄假体失败率较高表示担忧。本病例系列研究了3例患有Dorr A型骨质的男性大体重患者使用较小尺寸股骨柄假体后的早期无菌性松动情况。每个股骨柄假体在透视下进行对线和尺寸测量，直至在轴向和旋转应力下稳定。在每例病例中，均在6个月内出现症状性干骺端脱粘而导致失败。仔细分析表明，失败与尺寸较小的股骨柄假体相关，具体表现为：1）相对于干骺端尺寸过小；2）相对于患者体重指数尺寸过小；3）相对于所产生的偏移量尺寸过小。
