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Biomedical subjects

G P Rabey

Publications and source records attributed to G P Rabey.

5 recordsLinked to original sources
PubMed1986

Three-dimensional nasal morphology in adult bilateral cleft palate patients: a morphanalytic study.

The residual anomalies of the soft and hard tissues of the nose were studied in a group of adult bilateral cleft palate patients. Standard morphanalytic techniques were used to produce objective and accurate pictorial representations of the mean nasal deformities in three dimensions. The spatial positions of these mean outlines were tested statistically against normal means. Mean bilateral cleft nasal outlines were shown to have symmetric lateral and superior displacement of both alae with nasal blunting and retrusion and rounding of the nasal dorsum. The analytic techniques used indicated that the reduction in the depth of the external nose was confined to its posterior part. The presence of a palatal cleft in conjunction with the bilateral labial cleft only slightly increased the degree of deformity. In the case of asymmetrically incomplete bilateral clefts the nasal deformity in adulthood retained certain asymmetric features.

Adolescent↗
PubMed1977

Current principles of morphanalysis and their implications in oral surgical practice.

This survey of morphanalysis in an oral surgical context summarises current conventions concerning the fixed relations theory, the analytic morphograph and craniofacial morphography. The oral surgical implications are then discussed in preparation for subsequent papers on the morphanalysis of craniofacial dysharmony and mandibular condylysis.

Adult↗
PubMed1977

Morphanalysis of craniofacial dysharmony.

The first stage in the morphanalysis of craniofacial dysharmony involves induction. In this process, individual analytic morphograms are combined to form analytic histograms, which in turn are connected to form analytic histomorphograms, which provide three-dimensional statements about the variation in craniofacial structures in a population. The second stage involves deduction, in which the analytic morphograms of a particular patient are compared with appropriate analytic histomorphograms, so that a diagnosis of the three-dimensional nature of the dysharmony can be made. Craniofacial morphanalysis is performed manually in small scale enquiries but the methods have been converted to computer-graphic technology for large-scale studies. A clinical morphanalysis service is currently conducted and a standard reference atlas is being prepared.

Adolescent↗
PubMed1977

Bilateral mandibular condylysis-a morphanalytic diagnosis.

Four cases of bilateral mandibular condylysis are presented. The condition does not appear to be included in current teaching or existing nomenclature and consists of an acquired absence of the mandibular condyles, unassociated with temporomandibular ankylosis or aural/facial anomalies. In the literature of condylar maldevelopment four published cases appear to justify reclassification as bilateral mandibular condylysis, bringing the recorded total to eight. Whereas previous writers have regarded the condition as a prenatal condylar aplasia or hypoplasia, morphanalysis studies of the four current cases have shown that the probable aetiology is postnatal local disturbance in the condylar region. The term condylysis has been chosen to emphasise the locally destructive (or lytic) mechanism which appears to be involved. Mandibular condylysis is distinguished from condylar aplasia by its non-association with aural/facial anomalies and because normal development appears to proceed until the lytic event occurs. It is further distinguished from primary and secondary condylar hypoplasia because the condyle is absent rather than small, because normal development appears to proceed until the lytic event occurs and because of its non-association with aural/facial anomalies or temporomandibular ankylosis.

Adolescent↗