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Updated: Jan 18, 2026

Treatment Protocol for Rotator Cuff Calcific Tendinitis Using a Single-Crystal Piezoelectric Focused Shock Wave Source
Published on: December 23, 2022
[Ectopic calcification of the knee joint]
Elina Hahn1, Iman Khalili2, Veit Krenn3
1Klinik für Orthopädie und Unfallchirurgie, Zentrum für Operative Rheumatologie, Krankenhaus Reinbek St. Adolfstift, Hamburger Str. 41, 21465, Reinbek, Deutschland. elina.hahn@krankenhaus-reinbek.de.
Abstract:
An 81-year-old man presented with progressive tumorous swelling of the infrapatellar region of the left knee joint. X‑ray imaging was suggestive of bursosynovial chondromatosis or ectopic calcification. Histopathological examination of the resected tissue combined with laboratory findings of renal insufficiency and secondary hyperparathyroidism led to the diagnosis of tumoral calcinosis, which is a rare subentity of ectopic calcification.
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