Ankylosis of Both Hip-Joints

Gaucher's disease with involvement of both hip joints.

Ankylosis of the finger joints in rheumatoid arthritis.

The ordinary manifestations of rheumatoid arthritis are well known and readily recognized. They are subject to wide variations and, as they deviate farther from the conventional picture, diagnosis becomes difficult, doubtful, or even impossible. The aetiology is unknown and proof of diagnosis is lacking. Even the proposed diagnostic criteria for rheumatoid arthritis (Ropes, Bennett, Cobb, Jacox...

Modes of lubrication in human hip joints.

Cadaveric hip joints were tested in a hip function simulator which subjected the femoral head to a cycle of loading and oscillation similar to that experienced during walking and measured the frictional torque transmitted to the acetabulum. Silicone fluids with viscosities from 10-2 Pa s (pascal second) to 30 Pa s were used as lubricants and the transition from mixed to full fluid film lubricat...

Rotatory dislocation of both atlanto-axial joints.

A case of rotatory dislocation of both atlanto-axial joints is presented. A review of the literature reveals two other cases, both in children. This would appear to be the first report in an adult, who survived and made a full recovery.

Christiansen's artificial hip joints--what went wrong?

Modern arthroplasty is undoubtedly the greatest contribution that orthopaedic surgery has ever made to medical science. The honour for the good results achieved with total hip replacement surgery goes chiefly to the Briton John Charnley (1911-1982). However, the Norwegian Tor Aas Christiansen (1917-1981) has also earned a place in this history. He wanted to improve the operative treatment of di...