From the Department of Rehabilitation Medicine, Catholic University of Daegu School of Medicine, Daegu, South Korea.
Am J Phys Med Rehabil. 2020 Jan;99(1):7-12. doi: 10.1097/PHM.0000000000001263.
The aim of the study was to compare the clinical, radiographic, and ultrasound findings between simple and complicated Baker's cysts.
Forty-seven knees with Baker's cysts in 45 patients with knee pain were identified from a chart review. Baker's cysts were classified as simple or complicated according to ultrasound findings. Clinical data, including duration of knee pain, visual analog scale score, Kellgren-Lawrence grade, ultrasound findings, including the size and sonomorphology of the BC, severity of osteophytosis, thickness of joint effusion, meniscal tear, and synovial proliferation of the two types of BC, were compared.
There were 22 knees with a simple cyst and 25 knees with a complicated cyst. The thickness of the suprapatellar effusion in complicated Baker's cysts (5.7 ± 3.0 mm) was significantly greater than that in simple Baker's cysts (3.8 ± 3.2 mm), and the presence of synovial proliferation in the suprapatellar recess was significantly higher in complicated Baker's cysts (22 knees, 88.0%) than in the simple Baker's cysts (12 knees, 54.5%). However, there were no significant differences in demographic, radiographic, and other ultrasound parameters between the two types of BC.
Synovial proliferation with larger effusion in the suprapatellar recess was more associated with complicated BC than simple BC.
本研究旨在比较单纯性和复杂性贝克囊肿的临床、影像学和超声表现。
通过病历回顾，从 45 例膝关节疼痛患者的 47 个膝关节中确定了贝克囊肿。根据超声表现将贝克囊肿分为单纯性或复杂性。比较两种类型的贝克囊肿的临床数据（包括膝关节疼痛持续时间、视觉模拟评分、Kellgren-Lawrence 分级）、超声表现（包括囊肿大小和形态、骨赘严重程度、关节积液厚度、半月板撕裂和髌上囊滑膜增生）。
单纯性囊肿 22 个，复杂性囊肿 25 个。复杂性贝克囊肿的髌上囊积液厚度（5.7±3.0mm）明显大于单纯性贝克囊肿（3.8±3.2mm），复杂性贝克囊肿髌上囊滑膜增生的发生率（22 个，88.0%）明显高于单纯性贝克囊肿（12 个，54.5%）。然而，两种类型的贝克囊肿在人口统计学、影像学和其他超声参数方面无显著差异。
与单纯性贝克囊肿相比，复杂性贝克囊肿更易出现髌上囊滑膜增生和更大的积液。
