title: Case report - calcification of the medial collateral ligament of the knee with simultaneous calcifying tendinitis of the rotator cuff.
abstract: Calcification of the medial collateral ligament (MCL) of the knee is a very rare disease. We report on a case of a patient with a calcifying lesion within the MCL and simultaneous calcifying tendinitis of the rotator cuff in both shoulders.
  
  
  
  Calcification of the MCL was diagnosed both via x-ray and magnetic resonance imaging (MRI) and was successfully treated surgically. Calcifying tendinitis of the rotator cuff was successfully treated applying conservative methods.
  
  
  
  This is the first case report of a patient suffering from both a calcifying lesion within the medial collateral ligament and calcifying tendinitis of the rotator cuff in both shoulders. Clinical symptoms, radio-morphological characteristics and macroscopic features were very similar and therefore it can be postulated that the underlying pathophysiology is the same in both diseases. Our experience suggests that magnetic resonance imaging and x-ray are invaluable tools for the diagnosis of this inflammatory calcifying disease of the ligament, and that surgical repair provides a good outcome if conservative treatment fails. It seems that calcification of the MCL is more likely to require surgery than calcifying tendinitis of the rotator cuff. However, the exact reason for this remains unclear to date.
authors.affiliation: Department of Orthopaedic Surgery, Koenig-Ludwig-Haus, Julius-Maximilians-University Wuerzburg, Brettreichstraße 11, D- 97074, Wuerzburg, Germany. y-kamawal.klh@uni-wuerzburg.de.
authors.forename: Yama
authors.identifier: 0000-0002-1196-2163
authors.initials: Y
authors.lastname: Kamawal
authors.affiliation: Department of Orthopaedic Surgery, Koenig-Ludwig-Haus, Julius-Maximilians-University Wuerzburg, Brettreichstraße 11, D- 97074, Wuerzburg, Germany.
authors.forename: Andre F
authors.initials: AF
authors.lastname: Steinert
authors.affiliation: Department of Orthopaedic Surgery, Koenig-Ludwig-Haus, Julius-Maximilians-University Wuerzburg, Brettreichstraße 11, D- 97074, Wuerzburg, Germany.
authors.forename: Boris M
authors.initials: BM
authors.lastname: Holzapfel
authors.affiliation: Department of Orthopaedic Surgery, Koenig-Ludwig-Haus, Julius-Maximilians-University Wuerzburg, Brettreichstraße 11, D- 97074, Wuerzburg, Germany.
authors.forename: Maximilian
authors.initials: M
authors.lastname: Rudert
authors.affiliation: Department of Orthopaedic Surgery, Koenig-Ludwig-Haus, Julius-Maximilians-University Wuerzburg, Brettreichstraße 11, D- 97074, Wuerzburg, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Barthel
mesh_terms: D000700:Analgesics / Q000627:therapeutic use; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use; D001182:Arthroscopy; D002114:Calcinosis / Q000150:complications / Q000000981:diagnostic imaging* / Q000628:therapy; D004599:Electric Stimulation Therapy; D000074059:Extracorporeal Shockwave Therapy; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000601:surgery; D008279:Magnetic Resonance Imaging; D017888:Medial Collateral Ligament, Knee / Q000473:pathology*; D008875:Middle Aged; D010146:Pain / Q000209:etiology; D059408:Pain Management / Q000379:methods; D011859:Radiography; D035583:Rare Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D017006:Rotator Cuff / Q000473:pathology*; D000070636:Rotator Cuff Injuries / Q000601:surgery; D012782:Shoulder / Q000601:surgery; D052256:Tendinopathy / Q000150:complications / Q000000981:diagnostic imaging* / Q000628:therapy; D016896:Treatment Outcome
chemical_list: D000700:Analgesics; D000894:Anti-Inflammatory Agents, Non-Steroidal
keywords: Calcification; Case report; Knee; Medial collateral ligament; Open surgical repair; Rotator cuff