Acebes J Carlos, Sánchez-Pernaute Olga, Díaz-Oca Alberto, Herrero-Beaumont Gabriel
Department of Rheumatology, Fundación Jiménez Díaz, Madrid, Spain.
J Clin Ultrasound. 2006 Mar-Apr;34(3):113-7. doi: 10.1002/jcu.20210.
To assess sonographic changes in Baker's cysts (BCs) of patients with knee osteoarthritis after a single intra-articular corticosteroid injection.
Thirty patients with knee osteoarthritis complicated with a symptomatic BC received a single intra-articular injection of 40 mg triamcinolone acetonide. Knee pain, swelling, and range of motion were evaluated. BC area and thickness of the cyst wall were measured with sonography before and 4 weeks after local treatment.
A significant improvement in knee pain, swelling, and range of motion after corticosteroid injection was accompanied by a decrease in size of the BCs as well as in thickness of the cyst wall as measured by sonography. Moreover, the reduction of BC area on sagittal scans after treatment was significantly correlated with the improvement in range of motion.
In this series of osteoarthritis patients, injection of corticosteroids inside the knee joint accounted for a reduction in BC dimensions as well as cyst wall thickness. Sonography can be used not only for the diagnosis of BCs but also to monitor response to therapy.
评估膝关节骨关节炎患者在单次关节内注射皮质类固醇后，其腘窝囊肿（BCs）的超声变化。
30例膝关节骨关节炎合并有症状性BCs的患者接受了单次关节内注射40mg曲安奈德。对膝关节疼痛、肿胀及活动范围进行评估。在局部治疗前及治疗后4周，用超声测量BCs的面积及囊肿壁的厚度。
皮质类固醇注射后，膝关节疼痛、肿胀及活动范围有显著改善，同时超声测量显示BCs大小及囊肿壁厚度减小。此外，治疗后矢状位扫描时BCs面积的减小与活动范围的改善显著相关。
在这组骨关节炎患者中，膝关节内注射皮质类固醇导致BCs尺寸及囊肿壁厚度减小。超声不仅可用于BCs的诊断，还可用于监测治疗反应。
