Anesth Pain Med.  2020 Apr;15(2):199-204. 10.17085/apm.2020.15.2.199.

Ultrasound-guided treatment of common peroneal neuropathy caused by Baker’s cyst: a clinical note - A case report -

Affiliations
  • 1Department of Anesthesiology and Pain Medicine, Chung-Ang University Hospital, Seoul, Korea
  • 22nd Armored Brigade, Republic of Korea Army, Paju, Korea
  • 3Department of Orthopedic Surgery, Chung-Ang University Hospital, Seoul, Korea
  • 4Department of Pathology, Chung-Ang University Hospital, Seoul, Korea
  • 5Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicine, Seoul, Korea

Abstract

Baker’s cysts are usually located in the posteromedial side of the knee and seldom cause neuropathy. We describe the rare case of a 57-year-old woman with a popliteal cyst who presented with limping gait and pain in her lower leg. She was electronically diagnosed with common peroneal neuropathy and transferred to our pain clinic. On ultrasound examination, about 2.0 × 1.2 cm sized popliteal cyst was found to extend to the fibular head, compressing the common peroneal nerve. Therefore, ultrasound-guided aspiration of the cyst and a common peroneal nerve block were performed. Immediately after the procedure, the pain, dysesthesia, and limping gait were relieved. Although her pain and dysesthesia were relieved, she underwent the surgery because of limping gait. In this case, we found the Baker’s cyst, the cause of the common peroneal neuropathy, and treated it immediately by just simple ultrasound examination and aspiration.

Keyword

Peroneal neuropathies; Popliteal cyst; Ultrasonography
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