リウマチ学: 現在の研究
オープンアクセス

概要

Concordance of Patellar Tendinopathy in Patients with Primary Knee Osteoarthritis: A Clinical and Ultrasonographic Study

Ibrahim Tekeoglu, Sibel Takci, Halil Harman, Sinem Sag

Purpose: Patellar tendinopathy occurs by patellar tendons [PT] repetitive microtrauma and overuse. Besides knee is the most commonly involved peripheral joint in osteoarthritis [OA]. The aim of study was to investigate the concordance of patellar tendinopathy in patients with primary knee OA.
Material and methods: Seventy eight [7 men and 71 women] patients with knee OA aged between 35-75 were included in the study. Demographic, clinical data, bilateral tenderness of the PT, visual analog scale [VAS] for pain assessment and ultrasonographic findings were recorded. The patients were divided into three groups according to
grade of knee OA [grade 2, 3 and 4]. All patients’ PT examined with ultrasonography [US] by the same investigator. 
Results: The grade 2, 3, 4 OA groups were included 20, 42, 16 patients respectively. Significant correlations were detected between the proximal thicknesses of both knees (average) and age (p=0.000, r=0.395), weight (p=0.001, r=0.382), BMI (p=0.021, r=0.261) and VAS (p=0.002, r=0.344). There were statistically significant difference and
positive correlation between measurements of PT thickness and grade of OA comparing with grade 2-3 OA (p=0.001).  Furthermore there were statistically significant correlation between the tenderness of PT and proximal and distal PT thickness measurements in same knee (r=0.244, p=0.031; r=0.416, p<0.001, respectively). We did not detect any
Power Doppler [PD] signal in 78 patients’ PT.
Conclusion: The age, weight, BMI and severity of OA were independent risk factors of patellar tendinopathy. Also US is reliable imaging technique for detect patellar tendinopathy in patients with knee OA. Physical examination may not be omitted when evaluating patellar tendinopathy with US.