Calcific enthesopathy of the superior extensor retinaculum – an unusual cause of medial ankle pain
Ali Shah1, Karthikeyan P. Iyengar2, Ganesh Hegde1, James Ramos3, Rajesh Botchu1
1 Department of Radiology, The Royal Orthopaedic Hospital, Birmingham, United Kingdom
2 Department of Orthopaedics, Southport and Ormskirk Hospital NHS Trust, Southport, United Kingdom
3 Department of Orthopaedics, University Hospitals of Birmingham, Birmingham, United Kingdom
Corresponding author: Rajesh Botchu, Radiology, The Royal Orthopaedic Hospital, Department of Musculoskeletal Radiology, B31 2AP, Birmingham, United Kingdom; e-mail: firstname.lastname@example.org
Aim of the study: Ankle pain can present a clinical dilemma to the foot and ankle surgeons, with a multitude of entities to which the symptoms could potentially be attributed. Enthesopathy around the ankle joint could be due to overuse, injury, inflammation or infection. Calcific ligamentous enthesopathy around the ankle is a well-recognised condition with a spectrum of causes. Case description: To our knowledge, a clinically symptomatic presentation of calcific enthesopathy specifically affecting the entheses of the superior extensor retinaculum has not been described in the literature. We report the first case of symptomatic calcific enthesopathy of the superior extensor retinaculum in a healthy young female, and highlight the role of radiological interventions in its diagnosis. The condition was managed successfully by ultrasound-guided barbotage. Conclusions: Calcific enthesopathy of the attachment of the superior extensor retinaculum is a rare condition that should be considered in the differential diagnosis of patients with medial ankle pain.