Dynamics of Sonographic and Morphological Changes in Baker's Cyst Formation

Comparative analysis of sonographic and morphologic assessment in formation of Baker's cyst has been performed. There were 25 patients with gonarthrosis lasted 5.6 + years. In development of Baker’s cyst 3 periods were defined. Each period is characterized by structural changes caused by cyst development age and gonarthrosis stage. The period has specific quantitative and qualitative patterns of cyst wall and content. Ultrasound diagnosis of cyst structural development was reliably verified by histologic data. Ultrasound assessment of synovial masses in popliteal area allows to differentiate Baker’s cyst with other pathologic processes in deforming knee arthrosis of different genesis. Accurate definition of structural cyst development periods is useful for the detection of indications for cyst extirpation.