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Biomedical subjects

T G Munro

Publications and source records attributed to T G Munro.

12 recordsLinked to original sources
PubMed1991

Occult posttraumatic osteochondral lesions of the knee: prevalence, classification, and short-term sequelae evaluated with MR imaging.

The prevalence, characterization, and classification of acute, post-traumatic, occult subcortical fractures of the knee, identified at magnetic resonance (MR) imaging, were evaluated prospectively in 120 consecutive patients first seen with acute posttraumatic hemarthrosis of the knee. Occult subcortical femoral and tibial fractures were identified in 72% of patients. A modified MR imaging classification is suggested based on a combination of the appearances of such lesions at MR imaging and their short-term osteochondral sequelae. Among 67% of a cohort of 21 patients first seen with what have been described as occult geographic subcortical fractures, osteochondral sequelae were seen at follow-up MR imaging 6-12 months later. The evidence from this study indicates that specific subcategories of occult subcortical knee fractures are associated with an inordinately high prevalence of osteochondral sequelae, especially significant cartilage damage.

Adult↗
PubMed1990

The film-reporting session as a qualifying examination in diagnostic radiology.

To assess the value of a film-reporting session as a qualifying examination in radiology, 11 residents were allowed 1 hour to interpret and dictate reports on 20 test cases. Reports were marked by four examiners; two used a standardized marking scheme and two a simple pass or fail assessment. The marking schemes were compared and the scores were related to the level of training and performance on the American College of Radiology (ACR) practice examination. With pass or fail marking, there was 55% agreement between markers and poor correlation with the candidates' training level. There was 100% marker agreement using the standardized scheme and better correlation with the level of training. There was poor correlation with the ACR scores. Preliminary results suggest that a film-reporting session with standardized marking is feasible and may be a useful addition to current evaluation methods in diagnostic radiology.

Certification↗
PubMed1990

Destructive joint disease following replantation of digits of the hand.

Microsurgical techniques now often allow the repair of severed digits. After noticing destructive joint changes in a patient who underwent such repair, the authors examined the postoperative radiographs of 27 other patients who underwent repair of severed digits at the University Hospital, London, Ontario, between 1984 and 1987. They found five patients who were similarly affected. The mechanism of destruction is not known, but the authors believe that osteonecrosis plays a role or that the cause may be neurovascular.

Adolescent↗
PubMed1989

Brief communication: a simple model for teaching double-contrast examinations of the gastrointestinal tract.

Good double-contrast studies of the stomach and colon demand a meticulous examination technique. The radiology resident learning this technique often has difficulty understanding the effect of patient positioning on the barium and air. A simple three-dimensional model is described here which helps the resident understand the rationale for the sequence of manoeuvres required to move the barium and air through the gut.

Audiovisual Aids↗
PubMed1989

Digital teleradiology: Seaforth--London network.

A total digital teleradiology system using a prototype DuPont laser beam scanner (DTR 2000) and a Bell Canada digital transmission network was evaluated. A total of 489 radiographic and ultrasonographic examinations were transmitted for interpretation from a 41-bed rural community hospital in Seaforth to the University Hospital in London, Ontario, 80 km away. There was concurrence in 98% of these examinations, i.e. the laser-sensitive facsimile film clearly duplicated the original film findings and allowed a confident interpretation to be made. We conclude that this system could readily serve the needs of family physicians in rural communities for radiologic consultation, diagnosis, management, and triage of patients 24 hours per day.

Evaluation Studies as Topic↗
PubMed1989

Fractures of the base of the fifth metatarsal.

In 1902 Sir Robert Jones described a fracture of the fifth metatarsal which he incurred while dancing. Since that time, fractures of the base of the fifth metatarsal have been called "Jones fractures". Fractures of the tuberosity at the base of the fifth metatarsal are common and usually respond readily to conservative treatment. Less frequently the fracture occurs more distally through the proximal metaphysis. Eleven patients with fractures of the proximal metaphysis were reviewed to determine if they represented a clinically distinct subgroup. Seven of the patients were men between 19 and 25 years of age who fractured the fifth metatarsal playing sports. The fractures were slow to heal and one required internal fixation with bone grafting. Fractures of the proximal metaphysis of the fifth metatarsal have a different mechanism of injury and a less favourable prognosis than do tuberosity fractures. When they occur in young athletes, more aggressive treatment is required.

Adult↗
PubMed1989

Radiology seminars using teaching kits.

Clinico-radiological seminars are an effective method of teaching medical students. However, in busy departments it is often difficult to provide enough radiologists for small group instruction. This can be facilitated by the use of prepared teaching kits. Each kit contains a set of duplicated films and a syllabus which gives a short clinical history for each patient and a series of questions to be used to direct the discussion. Each diagnostic problem is chosen to demonstrate core material. We have been using these teaching kits for organ system teaching in the pre-clerkship year. Teaching kits offer several advantages. They make it easier to recruit seminar leaders through efficient use of their time. The use of duplicated films and a syllabus ensures that all students cover the same material. The syllabus can be used to generate examination questions for reinforcement of important concepts. The kits are also available to students to review alone and can be readily updated as required.

Curriculum↗
PubMed1987

Condensing osteitis of the clavicle. A review of the literature and report of three cases.

Condensing osteitis of the clavicle is a rare and benign idiopathic entity that is probably degenerative or mechanical in etiology. It is usually seen in women of late child-bearing age as a variably painful and tender swelling over the medial end of the clavicle. Radiographs show sclerosis and slight expansion of the medial one-third of the clavicle. Although malignant tumor of bone must be considered in the differential diagnosis of a disease that has such radiographic findings, numerous and expensive screening tests for a presumed primary malignant lesion are not recommended for most patients. It is recommended, however, that an excisional or (preferably) incisional biopsy be performed in all patients unless pain is insignificant and the clinical presentation strongly supports the diagnosis of condensing osteitis. Many patients who have slight pain do not need treatment. Anti-inflammatory medications are variably effective. Patients in whom the lesion is refractory respond well to excision of the medial one-third of the clavicle.

Adult↗