Department of Orthopaedic Surgery, University of Missouri, Columbia, MO 65212, USA.
J Arthroplasty. 2010 Jun;25(4):538-40. doi: 10.1016/j.arth.2009.04.019. Epub 2009 Jun 3.
We examined the incidence of heterotopic ossification (HO) in a consecutive series of total hip arthroplasties (THAs) performed with the so-called minimally invasive, 2-incision technique. Standard preoperative hip radiographs were used to grade the extent of degenerative arthritis, and comparable follow-up radiographs at 30 months after surgery were used to detect and classify HO formation. Of 121 patients, 32 (26.5%) developed HO, with the Brooker class distribution as follows: stage I, 16 patients; stage II, 9 patients; stage III, 6 patients; stage IV, 1 patient. In this study, HO formation after 2-incision THA occurred with nearly the same frequency as that reported in other studies after standard THA.
我们研究了采用所谓微创、双切口技术进行的全髋关节置换术(THA)后异位骨化(HO)的发生率。使用标准术前髋关节 X 线片对退行性关节炎的程度进行分级,并在术后 30 个月使用可比的随访 X 线片来检测和分类 HO 的形成。在 121 名患者中,有 32 名(26.5%)发生 HO,Brooker 分级分布如下:I 期 16 例;II 期 9 例;III 期 6 例;IV 期 1 例。在这项研究中,双切口 THA 后 HO 的形成频率与其他标准 THA 后报道的频率几乎相同。