E Anies, r Waltz, S lacey
A 49-year-old man presented with repeated episodes of right posterior knee effusions 11 months following right knee medial meniscus debridement. He was referred to Physical Medicine & Rehabilitation (PM&R) by his orthopaedic surgeon for further non-operative management. He had previously undergone ipsilateral vein stripping procedures with vascular surgery 5 months following his meniscal procedure. MRI of the knee with contrast along with a subsequent ultrasound evaluation with no evident power doppler flow confirmed the presence of a right posterior-medial gastrocnemius fluid collection extending extramuscularly into the proximal 1/3rd of the medial head of the gastrocnemius muscle. These imaging findings combined with the yellow-clear aspirate consistent with synovial fluid confirmed the presence of a Baker’s cyst with unusually distal extramuscular extension and subcutaneous location just superficial to the medial head of the gastrocnemius muscle. Successful implementation of platelet rich plasma (PRP) and Doxycycline tissue sclerosis emphasised the key role that nonoperative modalities have in treating Baker’s cysts. The patient continues to respond appropriately with resolution of his symptoms noted 3 weeks after his initial sclerotherapy session and an additional treatment performed with half the initial dose of doxycycline. This case demonstrates the successful treatment of a baker’s cyst with an unusually distal location.
Anies E P, Waltz R A, Lacey S (January 15, 2025) A Baker’s Cyst with Distal Extramuscular Extension: A Case Report. Cureus 17(1): e77502. doi:10.7759/cureus.77502