Clinic of Orthopaedic and Trauma Surgery, University of Heidelberg, Heidelberg, Germany.
Clinic of Orthopaedic and Trauma Surgery, Kepler University Clinic for Orthopaedic and Trauma Surgery, Linz, Austria.
J Knee Surg. 2021 Sep;34(11):1212-1219. doi: 10.1055/s-0040-1702184. Epub 2020 Apr 8.
Physical activity is essential for overall health. For patients undergoing knee arthroplasty, questions about the implant's suitability for sports arise. The general recommendations for physical activity with knee replacements are often based upon experts' opinions, with a lack of scientific data. This study was performed at an independent high-volume center and aimed to investigate what level of activity patients can achieve and how they perform with a well-functioning cementless unicompartmental knee replacement (UKR). Possible differences in outcome in regards to patients' body mass index (BMI) were also examined. A total of 228 knees treated with cementless Oxford UKR (OUKR) were followed up after a mean of 37.1 months. Tegner's and UCLA (University of California, Los Angeles) scores were obtained to assess the level of physical activity. The Schulthess Clinical Activity Questionnaire was assessed for detailed information on practiced sports, and the SF-36 questionnaire was evaluated to analyze patients' quality of life. The return to activity rate was 92.9%. In total, 64% of the physically active patients had already taken up sports within 3 months after surgery. Mean Tegner's score was at 3.5, and mean UCLA score was at 6.3. High impact sports were not performed very often after surgery. Higher BMI showed a negative correlation with the numbers of sports (r = -0.289) as well as Tegner's (r = -0.222) and UCLA (r = -0.383) scores. The SF-36 scores were comparably good to those in an age-equivalent standard reference group. In conclusion, cementless OUKR allows a fast return to activity with a high level of physical exercise. Patients with increased BMI tend to practice less types of sports with decreased activity scores.
身体活动对整体健康至关重要。对于接受膝关节置换术的患者，会出现关于植入物是否适合运动的问题。膝关节置换术后的身体活动一般建议通常基于专家意见，缺乏科学数据。本研究在一个独立的大容量中心进行，旨在研究患者能达到何种活动水平以及他们在使用功能良好的非骨水泥单髁膝关节置换（UKR）时的表现。还检查了患者体重指数（BMI）方面的差异对结果的可能影响。共随访了 228 例接受非骨水泥牛津 UKR（OUKR）治疗的膝关节，平均随访时间为 37.1 个月。采用 Tegner 和 UCLA（加利福尼亚大学洛杉矶分校）评分评估身体活动水平。采用舒尔茨临床活动问卷（Schulthess Clinical Activity Questionnaire）详细评估所进行的运动项目，采用 SF-36 问卷评估患者的生活质量。活动恢复率为 92.9%。总共，64%积极运动的患者在手术后 3 个月内已经开始进行运动。平均 Tegner 评分为 3.5，平均 UCLA 评分为 6.3。手术后很少进行高冲击运动。较高的 BMI 与运动的数量（r = -0.289）以及 Tegner 评分（r = -0.222）和 UCLA 评分（r = -0.383）呈负相关。SF-36 评分与年龄相当的标准参考组相当。总之，非骨水泥 OUKR 可快速恢复活动，且运动水平较高。BMI 增加的患者往往运动类型较少，活动评分降低。
