Neuropathic osteoarthropathy: diagnostic dilemmas and differential diagnosis.

The purpose of this pictorial essay is to illustrate the radiologic spectrum of imaging findings of neuropathic osteoarthropathy. Typical findings include joint destruction, disorganization, and effusion with osseous debris. A variety of other imaging findings related to neuropathic osteoarthropathy such as resorption of the ends of tubular bones and neuropathic fracture are shown. The two prevailing theories for the pathophysiology of neuropathic bone and joint disease, the neurovascular and neurotraumatic theories, are briefly described. Examples of osteoarthropathy from diverse causes are presented including syringomyelia, spinal cord injury, meningomyelocele, diabetes mellitus, congenital insensitivity to pain, steroid injections, syphilis, leprosy, and others. The discussion focuses on key imaging features with emphasis on disease patterns and differential diagnosis, which vary by skeletal location.

[Indolent arthropathies of the lower limbs]. / Les arthropathies indolentes des membres inférieurs.

The didactic lecture deals with four questions: What is the origin of an isolated indolent arthropathy? diabetes, amylose, leprosis. What diagnosis in an adult familial form? Thevenard's disease when amylosis has been excluded. What are the varieties of congenital indolent arthropathies? An early recessive form of Thevenard's disease and the congenital analgesia. How to deal with a unilateral indolent arthropathy? First of all, look for dysraphism.