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Biomedical subjects

C D Jefferiss

Publications and source records attributed to C D Jefferiss.

13 recordsLinked to original sources
PubMed1994

Scaphoid exostosis causing rupture of the flexor pollicis longus.

A case of attrition rupture of the flexor pollicis longus (FPL) tendon caused by a scaphoid osteophyte in a patient with rheumatoid arthritis is reported. This lesion was found only after a thorough search of the floor of the carpal tunnel was performed.

Arthritis, Rheumatoid↗
PubMed1977

'Straight lateral traction' in selected supracondylar fractures of the humerus in children.

A method of treating completely displaced supracondylar fractures of the humerus in children by 'straight lateral traction', as originally used by John Dunlop, is recommended. The results in 26 children, selected because manipulation had failed to achieve reduction, is examined, and indicates that this treatment is satisfactory for some problem fractures, leading usually to good results in terms of resolution of complications and return of function. It also avoids the ugly deformities of the elbow which follow reliance on a single form of treatment for all supracondylar fractures. Failure of anatomical reduction by the appliance is shown to be in the plane of elbow movement, where normal physiological mechanisms correct the bone by remodelling. Where there is epiphyseal damage, deformities may occur with any form of treatment.

Child↗
PubMed1976

An unusual seat-belt injury in a doctor.

The personal experience of a general practitioner who sustained a fracture-dislocation of the atlanto-axial joint is recorded. The inefficient application of an unyielding (non-inertial) lap and diagonal seat belt permitted this injury, although one does not know what other injuries might have occurred had the belt not been worn.

Aged↗
PubMed1975

Thermal aspects of self-curing polymethylmethacrylate.

Bone necrosis adjacent to self-curing polymethylmethacrylate is a matter of accepted fact. Among the possible causes are mechanical and vascular damage from the preparation of the bone cavity, chemical damage from the monomer and free radicals in the cement dough, and thermal damage from the heat of polymerisation, occurring in this order. Consideration of the tissue reaction to this material, theoretical calculation of the heat output from polymerising acrylic and interface temperature profiles, experimental observations of interface temperatures and maximal temperatures at polymerisation, together with clinical observations, all lead to the view that the bone necrosis is not a consequence of thermal damage, which is unlikely to be a cuase of failure of prosthetic fixation. Temperatures recorded from within polymerising acrylic masses are related primarily to the amount of monomer polymerising and are of no clinical significance in the fixation of prostheses. Interface temperatures are related primarily to the surface area of the interface and the thermal characteristics of the cooler material.

Bone Cements↗