Biomedical subjects

G W Bagby

Publications and source records attributed to G W Bagby.

3 recordsLinked to original sources

PubMed1989

Stress shielding reduced by a silicon plate-bone interface. A canine experiment.

Effects of modifying the plate-bone interface with Silastic were tested. The experimental plate, i.e., a conventional plate with a Silastic backing was compared with the standard plate. In vitro four-point bending tests showed similar strain per load behavior in the experimental and standard plate models. In vitro plate-bone contact was greater and interface pressure was lower for the experimental as compared with the standard plate. An in vivo implant study was conducted where the plates were tested on intact canine femurs. At 27 weeks postimplantation, there was less porosity and remodeling in the haversian envelope of bone plated with a Silastic interface.

Animals↗

PubMed1988

Arthrodesis by the distraction-compression method using a stainless steel implant.

A new process for arthrodesis in humans is presented. The process has been used successfully in the cervical spine of horses and has potential for human use. The concept is encompassed in the process of an anterior cervical fusion and is an adaptation of that established practice but using an implant of stainless steel containing autogenous bone graft to encourage through-the-implant growth of bone. In the future, it may have use in the human spine and other joints.

Animals↗

PubMed1977

Compression bone-plating: historical considerations.

Compression of bone fragments to accelerate, or at least facilitate, bone healing was first applied in 1932 by Key to arthrodesis of the knee. Subsequently the same principle was applied to fractures, first by percutaneous pins as developed by Roger Anderson and then by implanted compression plates. Two types of compression plate have been evolved. One employs an axially oriented force produced by a separate screw or temporarily applied compression device, designed just for this purpose, as originated by Danis in 1949. The other, devised by me in 1956, is a so-called self-compressing plate, which generates compression force by inserting eccentrically placed chamfered screw-heads into slots in the plate so that the screws (as well as the bone fragments in which they are inserted) are translated toward each other. Numerous modifications of these two basic designs are now available.

Bone Plates↗