South Bend Orthopaedics, South Bend, Indiana.
Department of Orthopedics and Rehabilitation, University of Iowa, Iowa City, Iowa.
J Arthroplasty. 2022 Nov;37(11):2158-2163. doi: 10.1016/j.arth.2022.05.039. Epub 2022 May 26.
Patient self-assessment of knee function in end-stage osteoarthritis (OA) and following total knee arthroplasty (TKA) using patient-reported outcome measures (PROMs) has become standard for defining disability. The relationship of PROMs to functional performance requires a continued investigation. The purpose of this study was to determine correlations between patient demographics, PROMs, and functional performances using a marker-less image capture system (MICS).
Patients indicated for elective TKA completed the Knee Injury and Osteoarthritis Score for Joint Replacement (KOOS-JR) and an office-based functional assessment using a MICS. Patient age, body mass index (BMI), and gender were collected. A total of 112 patients were enrolled. Their mean age was 65.0 (±9.7) years, mean BMI was 32.5 (±6.6) kg/m, and mean KOOS-JR was 14.5 (±5.7). The relationships between patient characteristics, KOOS-JR, MICS Alignment (coronal), MICS Mobility (flexion), and composite Total Joint scores were described using Spearman's correlation coefficients.
BMI was weakly correlated with KOOS-JR (ρ = -0.22, P = .024), whereas age was not. Age and BMI were not correlated with performance scores. There were weak to no correlations between KOOS-JR and MICS Alignment (ρ = -0.01, P = .951), Mobility (ρ = 0.33, P < .001), and Total Joint scores (ρ = 0.06, P = .504).
This study found no strong correlation between KOOS-JR and functional performance using a validated MICS for patients with end-stage knee OA. Further study is warranted in determining the relationship between PROMs and performance to optimize outcomes of patients undergoing nonoperative or surgical interventions for knee OA. The use of high-fidelity functional assessment tools that can be integrated into clinical workflow, such as the MICS used in this study, should permit PROM/functional performance comparisons in large populations.
在终末期骨关节炎（OA）患者中，以及在全膝关节置换术（TKA）后，使用患者报告的结果测量（PROM）来评估膝关节功能已成为定义残疾的标准。PROM 与功能表现之间的关系需要进一步研究。本研究的目的是使用无标记图像采集系统（MICS）确定患者人口统计学，PROM 和功能表现之间的相关性。
接受择期 TKA 的患者完成了膝关节损伤和骨关节炎评分用于关节置换术（KOOS-JR）和基于办公室的功能评估使用 MICS。收集患者年龄、体重指数（BMI）和性别。共纳入 112 例患者。他们的平均年龄为 65.0（±9.7）岁，平均 BMI 为 32.5（±6.6）kg/m，平均 KOOS-JR 为 14.5（±5.7）。使用 Spearman 相关系数描述患者特征、KOOS-JR、MICS 对齐（冠状面）、MICS 移动性（屈曲）和复合全关节评分之间的关系。
BMI 与 KOOS-JR 呈弱相关（ρ=-0.22，P=0.024），而年龄则没有。年龄和 BMI 与绩效评分无关。KOOS-JR 与 MICS 对齐（ρ=-0.01，P=0.951）、移动性（ρ=0.33，P<0.001）和全关节评分（ρ=0.06，P=0.504）之间的相关性较弱或不存在。
本研究发现，在使用经过验证的 MICS 对终末期膝关节 OA 患者进行功能评估时，KOOS-JR 与功能表现之间没有很强的相关性。需要进一步研究以确定 PROM 和表现之间的关系，以优化接受非手术或手术干预治疗膝关节 OA 的患者的结果。使用高保真功能评估工具，如本研究中使用的 MICS，可以集成到临床工作流程中，从而可以在大量人群中进行 PROM/功能表现比较。
