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Biomedical subjects

D C Jaffray

Publications and source records attributed to D C Jaffray.

5 recordsLinked to original sources
PubMed1992

Morphological basis for back pain: the demonstration of nerve fibers and neuropeptides in the lumbar facet joint capsule but not in ligamentum flavum.

The innervation of lumbar facet capsule and ligamentum flavum was investigated using antisera to a general neuronal marker protein gene product (PGP) 9.5 and to peptide markers of sensory nerves (calcitonin gene-related peptide [CGRP] and substance P) and autonomic nerves (vasoactive intestinal polypeptide [VIP] and C-flanking peptide of neuropeptide Y [CPON]). In the facet capsule (n = 14), PGP 9.5 and CGRP-immunoreactive nerves occurred in 12 and five specimens, respectively, both around blood vessels and as free fibers in the stroma. Free fibers immunoreactive for substance P or VIP were noted in three and five specimens, whereas in nine specimens there were CPON-immunoreactive nerves located perivascularly. There was no immunoreactivity in the ligamentum flavum. This study provides further evidence that the facet capsule but not the ligamentum flavum has substantial innervation by sensory and autonomic nerve fibers and has a structural basis for pain perception.

Adult↗
PubMed1991

Dynamic assessment of anterior cruciate ligament using an electronic force plate.

The active force exerted by the movement of arms and trunk with the knee in extension was measured in 25 patients with anterior cruciate ligament deficient knee. The electronic force sensitive foot plate was used to measure the force. Two sets of measurements were carried out. The antero-posterior stress test for measurement of Fy and the rotational stress test for measurement of Mz. Peak values obtained in anterior cruciate deficient knee were compared with the normal knee on the other side. The measurement of the difference in Fy was found to be a reliable indicator of instability of the knee, but no significant difference was found in the peak torque values (Mz) between the two knees. This study suggests that this test may be useful in the objective measurement of knee instability. Details of the method used and its possible indications are discussed.

Anterior Cruciate Ligament↗
PubMed1985

Renal pelvi-ureteric injury in traumatic paraplegia.

Three cases of pelvi-ureteric injury associated with traumatic paraplegia are described. The diagnosis of such injuries is usually late and the consequences can seriously affect the outlook of the patient. The problems of late diagnosis are discussed and recommendations made concerning earlier diagnosis.

Adolescent↗