Harris lines of the tibia across centuries: a comparison of two populations, medieval and contemporary in Central Europe.

Objective: To determine the incidence of Harris lines in two medieval populations which inhabited the Canton of Berne, in Central Switzerland, and to compare the results with those of a contemporary population living in the same geographical area. A simplified method is described for measuring the age of the individual at the time of formation of Harris lines, with possible future applications.

Design And Patients: Radiographs of 112 well-preserved tibiae of skeletons of two medieval populations from the eighth to fifteenth centuries were reviewed for the incidence of Harris lines.

Shoe rim and shoe buckle pseudotumor of the ankle in elite and professional figure skaters and snowboarders: MR imaging findings.

Objective: To review MR imaging of figure skaters and snowboarders presenting with painful soft-tissue swelling of the lateral supramalleolar region with a clinical provisional diagnosis of soft-tissue tumor.

Design And Patients: MR imaging was prospectively reviewed by two sub-specialized musculoskeletal radiologists. The findings were correlated with a second clinical review and examination of the shoe wear.

Postpartum osteoporosis associated with proximal tibial stress fracture.

A 33-year-old woman presented with acute nonspecific knee pain, 6 months postpartum. MR imaging, computed tomography and radiography were performed and a proximal tibia plateau insufficiency fracture was detected. Bone densitometry demonstrated mild postpartum osteoporosis.

MR imaging of calcification of the lateral collateral ligament of the knee: a rare abnormality and a cause of lateral knee pain.

Objective: Our objective was to describe the radiologic appearances of calcification of the lateral collateral ligament (LCL) of the knee in four patients who presented with acute atraumatic lateral knee pain. This rare abnormality has not, to our knowledge, been previously shown on MR imaging.

Conclusion: Calcification of the LCL of the knee is a rare cause of lateral knee pain and is thought to reflect underlying hydroxyapatite deposition.

Observations on retrieved glenoid components.

To obtain more information on the pattern of damage of prosthetic glenoid components, we analyzed 7 retrieved glenoid components. The consecutive series included 2 standard polyethylene components and 5 highly crystalline polyethylene glenoids (Hylamer; DePuy Dupont Orthopaedics, Warsaw, IN) retrieved 3 to 12 years after implantation. At revision, 4 of 5 Hylamer components were fractured.