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Biomedical subjects

A F DePalma

Publications and source records attributed to A F DePalma.

At least 19 recordsLinked to original sources
PubMed1978

"Floating-socket" total shoulder replacement: anatomical, biomechanical, and surgical rationale.

A prosthesis based on a new concept of gleno-humeral motion has been developed and clinically tested for the past 2 years. The "floating-socket" total shoulder replacement contains a nondislocatable, dual spherical bearing system consisting of a small sphere within a larger sphere with their centers offset to provide the physiologic "floating fulcrum" for mechanically advantageous motion. This geometric configuration allows a prosthetic range of motion in excess of anatomical limits to allow soft tissue structures to limit motion rather than mechanical impingement. The device is constructed from Co--Cr--Mo alloy and RCH-1000 polyethylene such that no metal--metal contact can occur. Experimental results in a 112-lb adult male chimpanzee and six clinical cases have revealed superior fixation strength of both glenoid and humeral components, as well as functional adaptation of the prosthesis without fracture of fixturing bone or prosthetic dislocation.

Alloys↗
PubMedDate not supplied

Pyarthrosis of the manubriosternal joint.

This is a case report of primary osteomyelitis of the sternum, the only case of pyarthrosis of the manubriosternal joint the authors are able to find in the American literature. The diagnosis was established by tomogram and open biopsy. The treatment was thorough and specific antibiotic coverage.

Adult↗