[Lesions of the nerves of the hip involving chronic rheumatic infections (ankylosing spondylitis, rheumatoid arthritis, arthrosis). Anatomopathologic study].

We have studied the nerves of the synovium and capsules of 6 hips with ankylosing spondylitis, 6 hips with rheumatoid arthritis and 14 cases of coxarthrosis either primary or secondary to a malformation. The nerves were studied with the usual methods of peripheral neuropathology. In the various diseases except 5 cases of coxarthrosis secondary to a malformation, the inflammatory and vascular involvements with tissue fibrosis were able to affect the nerves crossing the tissues. This nerve involvement could be the cause of articular pain. Despite the importance of the surrounding lesions, the nerves are preserved for a long time and this could explain the persistance of the pain.