Calcification of the Tibial Collateral Ligament

Pellegrini–Stieda disease: a heterogeneous disorder not synonymous with ossification/calcification of the tibial collateral ligament—anatomic and imaging investigation

“…Finder added a fourth pattern of Fig. 4 Schematic representation of the different locations and appearances of PS disease: (I) beak-like appearance with an inferior orientation and femoral attachment; (II) drop-like appearance with an inferior orientation, parallel to the femur; (III) elongated appearance with a superior orientation, parallel to the femur; (IV) beak-like appearance with an inferior and superior orientation, attached to the femur ossification [3]. Pellegrini described five types of ossification, based on the shape of the radiodense region and its relationship to the bone [20].…”

“…Pellegrini-Stieda (PS) disease has been described as calcification [1],ossification [2], or both [3] in the tibial collateral ligament (TCL) [1], usually related to a history of trauma. This entity has associated radiographic and clinical findings, and its description dates to the beginning of the last century.…”

True heterotopic bone in the paralyzed patient

“…Reports in the literature describe fibrositis ossificans in relation to the ligaments, muscles, or bony attachment. One of the best known examples is ossification of the medial collateral ligament, Pellegrini-Stieda disease [10,18].…”