Department of Orthopaedics, University of California, Davis, Sacramento, 95817, USA.
Int Orthop. 2010 Dec;34(8):1193-8. doi: 10.1007/s00264-010-1012-x. Epub 2010 May 21.
There is a paucity of objective information in the literature about first metatarsophalangeal (MTP) hemiarthroplasty. The authors postulate that it is a reasonable treatment option for severe hallux rigidus in selected patients. Twenty-two elective first MTP hemiarthroplasties were performed on 20 patients that met the inclusion criteria. Pre- and postoperative evaluations were done using the American Orthopaedic Foot and Ankle Society (AOFAS) forefoot score, visual analogue scale (VAS) pain score, range of motion (ROM) measurements, and radiographs. Average ROM and dorsiflexion improved by 15° and 8°, respectively. VAS pain scores improved from 5 to 2.5 after six weeks. Painless ambulation occurred after six weeks, with maximum improvement by six months. After 24 months, two patients had pain at the surgical site interfering with function, leading to an unsatisfactory result that required conversion to arthrodesis. First MTP hemiarthroplasty for severe hallux rigidus can be considered an alternative to fusion in properly selected patients who wish to maintain a functional range of motion.
关于第一跖趾（MTP）关节半关节成形术，文献中客观信息较少。作者推测，对于特定患者的严重拇僵硬，它是一种合理的治疗选择。20 名符合纳入标准的患者接受了 22 例选择性第一跖趾 MTP 半关节成形术。术前和术后评估采用美国矫形足踝协会（AOFAS）前足评分、视觉模拟评分（VAS）疼痛评分、活动范围（ROM）测量和影像学检查。平均 ROM 和背屈分别改善了 15°和 8°。VAS 疼痛评分在 6 周后从 5 分降至 2.5 分。6 周后可无痛步行，6 个月时达到最大改善。24 个月后，两名患者在手术部位出现疼痛，影响功能，导致结果不满意，需要转换为融合。对于希望保持功能性活动范围的适当选择的患者，严重拇僵硬的第一跖趾 MTP 半关节成形术可作为融合的替代方案。
