Biomedical subjects

W L Dillon

Publications and source records attributed to W L Dillon.

3 recordsLinked to original sources

PubMed1977

The bone-cement interface temperature during total joint replacement.

Sets of thermoprobe measurements of the temperature of the bone-cement interface were made during twenty total joint-replacement procedures. Although the range of rise in temperature was wide, from 3 to 17 degrees centigrade, the highest temperature obtained was 48 degrees centigrade, which is well below the denaturation point (56 degrees centigrade) of proteins. Several factors, such as the presence of blood and moisture at the interface and the large surface area and poor heat conductivity of methylmethacrylate, prevent the interface from experiencing the high rise in temperature that occurs at the center of the polymerizing cement mass.

Bone Cements↗

PubMed1977

A longitudinal study of the radiolucent line at the bone-cement interface following total joint-replacement procedures.

After 100 consecutive total hip arthroplasties, a radiolucent line at the bone-cement interface as seen on serial roentgenograms was on the acetabular side in fifty-nine hips and on the femoral side, in three. Similarly, after seventy-five consecutive non-hinged knee-replacement arthroplasties, a radiolucent line was found at the bone-cement interface beneath the polyethylene component more frequently in knees in which the more constrained geometric implant was used (forty-two of fity-nine) than in knees in which the less constrained polycentric and modular prostheses were used (three of sixteen). The presence of a lucent line at the bone-cement interface in these joints did not signify looseness or failure of the arthroplasty.

Bone Cements↗

PubMed1976

Changing concepts in the management of pathological and impending pathological fractures.

The benefits in the management of pathological fractures by internal fixation are well recognized. However, failures in bone or metal can occur where there is a large amount of bone destruction. Seven of 69 pathological fractures in our series were treated by internal fixation with adjunctive use of methylmethacrylate without failure. This allowed for secure fixation in fractures with large amounts of bone destruction, thus decreasing the patient's pain and allowing earlier mobilization. Neither the effects of radiotherapy on bone involved with neoplasm nor methylmethacrylate are altered when radiotherapy is used after internal fixation and adjunctive use of methylmethacrylate. We believe that an aggressive program of stabilization of these fractures or fixation before actual fracture provides significant patient benefits including reduction of pain, decreased length of hospital stay, reduction of financial expense, and return to as near normal function as possible.

Adolescent↗