屈伸法和拔伸法在膝骨性关节炎屈伸功能障碍的治疗作用比较

目的:比较屈伸法和拔伸法在膝骨性关节炎(KOA)屈伸功能障碍的治疗作用。方法:将60例KOA患者随机分为观察组与对照组各30例,两组患者在基础推拿治疗后,分别用屈伸法和拔伸法治疗,通过膝关节自主屈伸角度变化、KOOS评分量表积分变化比较两组患者的疗效。结果:1膝关节自主伸直、屈曲角度比较,组内和组间患者比较差异均有统计学意义(P<0.05);2KOOS量表评分比较,组内和组间患者比较差异均有统计学意义(P<0.05)。结论:屈伸法改善KOA屈伸功能障碍疗效优于拔伸法,是临床治疗KOA屈伸功能障碍的主要手法。     

透明质酸、富血小板血浆及两者联合应用对膝骨关节炎的疗效评估

目的 本研究旨在评估透明质酸（hyaluronic aicd , HA）与富血小板血浆（platelet rich plasma , PRP）对膝骨关节炎的疗效,同时探讨两者联合应用的潜在治疗效果。方法 纳入从2016年1月至2017年12月就诊于南京市第一医院的膝骨关节炎患者101例,按治疗方法的不同分为A组（膝关节腔内注射HA）37例、B组（膝关节腔内注射PRP）33例、C组（联合应用）31例。采用膝关节损伤与骨关节炎评分（knee injury and osteoarthritis outcome score , KOOS)在治疗前和治疗后1、3、6个月对疗效进行评估。结果 ①治疗1个月后,三组KOOS评分均较治疗前明显改善（P＜0.05）,其中C组的KOOS疼痛评分显著优于A组及B组（P＜0.05）;②治疗3个月后,3组较治疗前仍维持较好的疗效（P＜0.05）,其中B组与C组KOOS部分评分优于A组（P＜0.05）,B组与C组之间无明显差异（P＞0.05）;③治疗6个月后,B组与C组KOOS评分仍优于治疗前（P＜0.05）,两组无显著差异,而A组KOOS评分较治疗前无明显优势（P＞0.05）。结论 关节腔内注射PRP治疗膝骨关节炎可获得至少6个月的疗效,且在治疗3个月后,疗效优于HA。对于HA+PRP疗法,优势主要表现在短期内更为显著的改善了患者的疼痛症状。     

Validation of the Spanish Version of the Knee Injury and Osteoarthritis Outcome Score (KOOS) for Elderly Patients With Total Knee Replacement

The purpose of this study was to validate the Knee Injury and Osteoarthritis Outcome Score (KOOS) for elderly patients who undergo total knee replacement (TKR). The validated Spanish versions of the KOOS and Medical Outcomes Study 36‐Item Short‐Form Health Survey (SF‐36) questionnaires were applied to 137 patients (mean age 72.3, SD 7.5 years). Test–retest data were collected with an intermediate period of 1–2 weeks. To evaluate the clinimetric properties of the KOOS, internal consistency (Cronbach's α), reproducibility (intraclass correlation coefficient [ICC]), construct validity (Spearman's correlation), responsiveness (effect sizes [ES], and standardized response mean [SRM]), and floor and ceiling effects (<15%) were assessed. As result, Cronbach's coefficients of the KOOS subscales ranged from 0.78 to 0.93, and ICC from 0.76 to 0.91. Construct validity was supported by the confirmation of the three predefined hypotheses involving expected correlations between KOOS subscale and SF‐36 physical health subscales. Spearman's correlations were strong between KOOS Pain and SF‐36 Bodily Pain (r = 0.81), KOOS Pain and SF‐36 Physical Functioning (r = 0.67), KOOS activities of daily living (ADL) and SF‐36 Bodily Pain (r = 0.69), KOOS ADL and SF‐36 Physical Functioning (r = 0.74), and KOOS Sports/Recreation and SF‐36 Physical Functioning (r = 0.76). Responsiveness at 1 year after TKR was large with the ES ranging from 0.81 to 2.12, and the SRM from 0.70 to 1.91. Floor and ceiling effects were low. In conclusion, the Spanish version of KOOS has successful psychometric characteristics and is a reliable and valid instrument for assessment of patient‐relevant outcomes in elderly patients with advanced OA who undergo TKR. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:2157–2162, 2019     

Preoperative Patient-Reported Outcomes and Clinical Characteristics as Predictors of 90-Day Cost/Utilization and Complications

Background

With the advent of mandatory bundle payments for total joint arthroplasty (TJA), assessing patients’ risk for increased 90-day complications and resource utilization is crucial. This study assesses the degree to which preoperative patient-reported outcomes predict 90-day complications, episode costs, and utilization in TJA patients.

MR imaging of BioCartilage augmented microfracture surgery utilizing 2D MOCART and KOOS scores

Objectives

BioCartilage is a novel scaffold-based microfracture augmentation technique that has been shown to aid in chondrogenic differentiation of adult progenitor cells resulting in formation of more hyaline-like cartilage. As this cartilage repair technique becomes more commonplace, it is essential that the musculoskeletal radiologist and orthopedic surgeon gain familiarity with the surgical technique and its post-operative MR imaging findings.

Medial Overhang of the Tibial Component Is Associated With Higher Risk of Inferior Knee Injury and Osteoarthritis Outcome Score Pain After Knee Replacement

Background

The aim of this prospective multicenter study is to investigate the association among (1) tibial site-specific overhang of medial, anterior, and lateral overhang in relation to Knee Injury and Osteoarthritis Outcome Score pain 1 year after surgery (1 Y KOOS pain) and (2) the malalignment of TKA components including overall malalignment in relation to 1 Y KOOS pain.

Comparison of KOOS Scores of Middle-Aged Patients Undergoing Total Knee Arthroplasty to the General Dutch Population Using KOOS Percentile Curves: The LOAS Study

BackgroundWe aimed to investigate the application of the Knee Injury and Osteoarthritis Outcome Score (KOOS) percentile curves, using preoperative and postoperative data of patients with knee osteoarthritis undergoing total knee arthroplasty (TKA).MethodsWe used Longitudinal Leiden Orthopedics Outcomes of Osteo-Arthritis study data of patients between 45 and 65 years and undergoing primary TKA. KOOS scores (0-100) were obtained preoperatively and 6, 12, and 24 months after TKA. Preoperative knee radiographs were assessed according to Kellgren-Lawrence (KL) in a subset (37%) of patients. Comorbidities were self-reported using a standardized questionnaire. The median (interquartile range) population-level KOOS scores were plotted on previously developed population-based KOOS percentile curves. In addition, we assessed the application of the curves on patient level and investigated differences in scores between patients with preoperative KL scores ≤2 and ≥3 and presence (vs absence) of comorbidities.ResultsThe study population consisted of 853 patients (62% women, mean age 59 years, body mass index 30 kg/m²) with knee osteoarthritis undergoing primary TKA. Preoperatively, median KOOS scores of all subscales were at or below the 2.5^th percentile. Scores increased to approximately the 25^th percentile 12 months postoperatively. Greater improvements were observed in pain and less improvements in sport and recreational function and quality of life. Patients with higher preoperative KL scores and without comorbidities showed greater improvements.ConclusionThe KOOS percentile curves provided visual insights in knee complaints of patients relative to the general population. Furthermore, the KOOS percentile curves give insight in how preoperative patient characteristics are correlated with postoperative results.