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Biomedical subjects

R V Walker

Publications and source records attributed to R V Walker.

At least 19 recordsLinked to original sources
PubMed1992

The facial nerve function coefficient: analysis of 100 normal subjects.

The Facial Nerve Function Index (FNFI) is a measure of asymmetrical facial movement and is a quick and easy method of monitoring the improvement of function in patients with facial nerve palsy. However, purely as a consequence of the way the index is formulated, and not primarily because of any tendency to biological asymmetry favoring one particular direction in the population, the FNFI has a highly skewed distribution. To remove the inherent asymmetry of the index, a modified index, the Facial Nerve Function Coefficient (FNFC), for which a symmetrical distribution is obtained, is proposed. A reference range for this index was derived.

Adolescent↗
PubMed1989

Salivary testosterone levels and the progress of puberty in the normal boy.

Salivary testosterone (ST) levels were measured in 84 boys aged 7.3-16.2 from the Edinburgh Growth Study. The correlation coefficient between matched plasma/saliva samples was 0.88. Six samples were collected over the course of one day from 0900 to 2100 h each month in the majority of the children for 4 consecutive months. Mean daily ST levels showed a significant rise between each pubertal stage (genital (G) and pubic hair (PH]. The rise in ST became more rapid once a mean testicular volume (MTV) of 10 ml had been reached. The diurnal rhythm was assessed by individual curve fitting on the log scale and by cosinor analysis. A rhythm was present prepubertally and developed into a pattern similar to that of the adult rhythm by stage G3. The monthly rate of rise of ST was greatest at stage G4. A significant rise in ST levels was detectable immediately prior to an increase in MTV to 3 ml. This allowed earlier recognition of the clinical onset of puberty at testicular volume of 3 ml, which in this group occurred at 10.9 (SD 0.9) years. ST is a non-invasive and sensitive method for the serial monitoring of gonadal function in the prepubertal and adolescent boy.

Adolescent↗
PubMed1987

A surgical technique for management of internal derangement of the temporomandibular joint.

A study was carried out on 50 patients who had undergone temporomandibular joint (TMJ) surgery because of chronic joint pain, limited mouth opening, and joint noise. These patients were diagnosed as having internal derangement (disc displacement) of the TMJ. The corrective surgical technique consisted of removing 2-4 mm of the top of the condyle, freeing of the displaced disc, and securely suturing it atop the condylar stump and to the lateral capsule. A three-month period of physiotherapy was done for all patients to rehabilitate the joint. Results have shown that the patients' preoperative signs and symptoms were resolved with no recurrence.

Adolescent↗
PubMed1987

Silastic implant as a part of temporomandibular joint arthroplasty. Evaluation of its efficacy.

A study was made of 68 patients who had undergone an intra-articular temporomandibular joint (TMJ) arthroplasty, using silastic implants as a part of the procedure, between 1970 and 1985. The use of silastic as a part of the arthroplasty was made when the disc was non-salvable because of perforation or destroyed because of ankylosis or previous surgery. At surgery, all patients had upper and lower arch bars fixed to their teeth by wiring in order to facilitate post-operative nocturnal elastic intermaxillary fixation of the teeth in occlusion as a part of a 3-month period of follow-up physiotherapy. Both surgery and the follow-up physiotherapy were considered of equal importance in the management of these patients. The study showed that 63 of 68 patients were relieved of their pre-operative signs and symptoms by the surgery and follow-up physiotherapy. These 63 patients have had no recurrence of their problem.

Adult↗
PubMed1984

Civilian maxillo-facial gunshot injuries.

Recently, in many parts of the world, there has been an increase in the number of civilian crimes involving guns and nowadays any oral surgeon in hospital may be confronted with this type of injury. This paper reviews the mechanism of wounding by different firearms to allow an appreciation of their effect on living tissues, and then outlines the clinical management of these injuries.

Facial Bones↗
PubMed1977

The manpower survey of oral surgery in 1974. Part 1 of two parts. 1. Introduction and some general characteristics of oral surgeons.

Questionnaires requesting much data about oral surgeons and their practice of the specialty were mailed to the members of the American Society of Oral Surgeons. A total of 2,251 usable questionnaires were returned. The methods used in the survey and to summarize the data have been described and some general characteristics of the responding oral surgeons have been supplied in this report. Almost 76% (75.8%) of the oral surgeons returned usable questionnaires. Only 2.4% of the respondents were younger than 30 years and 60.5% were in the age range of 30 to 44 years. The average age of all respondents was 43.0 years. Slightly more than 80% participate in private practice either full-time or part-time teaching. Only 5.1% of the respondents aged 65 to 69 had retired. Almost 82% (81.7%) were active members of the Society. More respondents (24.7%) practiced in cities with populations larger than 500,000 and only 4.5% practiced in cities with populations less than 25,000. More than half of the 2,251 respondents (53.8%) practiced in cities with populations less than 150,000, and 44.4% were in cities with populations less than 100,000.

Adult↗