The long-term in vivo behavior of polymethyl methacrylate bone cement in total hip arthroplasty.

Background And Purpose: The long-term success of cemented total hip arthroplasty (THA) has been well established. Improved outcomes, both radiographically and clinically, have resulted mainly from advances in stem design and improvements in operating techniques. However, there is concern about the durability of bone cement in vivo.

Acrylic bone cement: its clinical development and current status in Japan.

This article describes the transition of annual total sales figures of bone cement in Japan during the last 12 years, bone cement-related complications, the present status of bone cement application in Japan as surveyed by the Implant Committee of the Japanese Orthopaedic Association, and its proposed precautions to be taken for the prevention of bone cement complications.

Congenital contracture of the quadriceps muscle: a case report with magnetic resonance imaging.

Introduction: Case report of a rare form of congenital contracture of the quadriceps muscle. Congenital contracture of the quadriceps muscle is encountered very rarely in daily orthopaedic practice. A few cases have been reported, but unfortunately these did not detail the MRI findings of congenital contracture.