Paradiaphyseal calcific tendinitis with cortical bone erosion.
OBJECTIVE
To determine the clinical, radiologic, and histologic features of calcific tendinitis with cortical bone erosion.


METHODS
The records of 6 patients with paradiaphyseal calcific tendinitis and adjacent bone cortex erosion were reviewed.


RESULTS
Calcific tendinitis involved the linea aspera in 4 patients, the bicipital groove in 1 patient, and the deltoid insertion in another. Calcium deposits were associated with cortical bone erosions, revealed on plain radiographs in 4 patients and computed tomography scans in 2. Bone scans were performed in 2 patients and showed local hyperfixation of the isotope. In 4 patients, suspicion of a neoplasm led to a biopsy. Calcium deposits appeared to be surrounded by a foreign body reaction with numerous giant cells. Apatite crystals were identified by transmission electron microscopy and elemental analysis in 1 surgical sample.


CONCLUSIONS
Paradiaphyseal calcific tendinitis with cortical bone erosion is an uncommon presentation of apatite deposition disease.
Fritz
P
P
Clinique de Rhumatologie, Centre Viggo Petersen, Hôpital Lariboisière, Paris, France.
Bardin
T
T
Laredo
J D
JD
Ziza
J M
JM
D'Anglejan
G
G
Lansaman
J
J
Bucki
B
B
Forest
M
M
Kuntz
D
D
D000328:Adult; D000368:Aged; D001031:Apatites / Q000032:analysis; D001706:Biopsy; D001862:Bone Resorption / Q000000981:diagnostic imaging* / Q000473:pathology; D002114:Calcinosis / Q000175:diagnosis / Q000000981:diagnostic imaging*; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging; D006801:Humans; D006811:Humerus / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D052256:Tendinopathy / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed
D001031:Apatites