Pongcharoen Boonchana, Boontanapibul Krit
Orthopedics, Faculty of medicine, Thammasat University, Klongluang 12120, Thailand.
Orthopedics, Thammasat University, Klongluang 12120, Thailand.
World J Orthop. 2018 Sep 18;9(9):149-155. doi: 10.5312/wjo.v9.i9.149.
To compare clinical outcomes of patients with and without preoperative genu recurvatum (GR) following mobile bearing unicompartmental knee arthroplasty (UKA).
We prospectively followed 176 patients for at least 24 mo who had been treated by unilateral, minimally invasive, Oxford UKA. Patients with medial osteoarthritis (OA) knee and preoperative GR (Group I) accounted for 18% ( = 32) and patients without preoperative GR (Group II) accounted for the remaining 82% ( = 144). Knee score, pain scores, and functional scores were assessed for each patient and compared between the two groups. The incidence of postoperative GR and the postoperative hyperextension angles also were recorded and analyzed.
The pain score, knee score and functional score were not significantly different between the two groups. Similarly, the incidence of postoperative GR and the measured hyperextension angles were not significantly different between the two groups. The incidence of postoperative GR was 1/32 (3.12%) in Group I and 1/144 (0.69%) in Group II ( = 0.34). The mean postoperative hyperextension angles were 2.40° ± 2.19° (range: 1°-7°) for Group I and 1.57° ± 3.51° (range: 1°-6°) for Group II ( = 0.65).
Medial OA of the knee and concomitant GR is not a contraindication for the mobile bearing UKA.
比较活动平台单髁膝关节置换术（UKA）术前有无膝反屈（GR）患者的临床疗效。
我们对176例行单侧微创牛津UKA治疗的患者进行了至少24个月的前瞻性随访。内侧膝骨关节炎（OA）且术前有GR的患者（I组）占18%（n = 32），术前无GR的患者（II组）占其余82%（n = 144）。对每位患者的膝关节评分、疼痛评分和功能评分进行评估，并在两组之间进行比较。记录并分析术后GR的发生率和术后过伸角度。
两组之间的疼痛评分、膝关节评分和功能评分无显著差异。同样，两组之间术后GR的发生率和测量的过伸角度也无显著差异。I组术后GR的发生率为1/32（3.12%），II组为1/144（0.69%）（P = 0.34）。I组术后平均过伸角度为2.40°±2.19°（范围：1°-7°），II组为1.57°±3.51°（范围：1°-6°）（P = 0.65）。
膝关节内侧OA合并GR并非活动平台UKA的禁忌证。
