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Biomedical subjects

G F McCoy

Publications and source records attributed to G F McCoy.

36 records · Page 2Linked to original sources
PubMed1987

Vascular injury associated with low-velocity dislocations of the knee.

Complete dislocation of the knee is a relatively rare condition. When it occurs as a result of high-velocity injury, such as in a road traffic accident, associated vascular injury is generally suspected. In low-velocity injuries, however, distal pulses are often maintained throughout, and the possibility of vascular injury may erroneously be discounted. We report four cases of low-velocity dislocation of the knee, only one of which had an overt vascular disruption, but three of which had arterial damage. On the basis of our experiences, we recommend arteriography in all cases of complete dislocation of the knee.

Accidental Falls↗
PubMed1987

Vibration arthrography as a diagnostic aid in diseases of the knee. A preliminary report.

The detection and recording of vibration emission from human joints, a technique which we have termed "vibration arthrography", is a sensitive, non-invasive method for the objective study of the locomotor system. Using vibration sensors attached to bony prominences around the knee, we studied the joints of both normal and symptomatic subjects. Normal subjects produced three signal types--physiological patellofemoral crepitus, patellar clicks, and the lateral band signal. In symptomatic subjects we identified and categorised many signal types and related them to pathology. Lesions of the menisci produced distinctive signals, and it was possible not only to lateralise the tear, but in many cases to determine the type of meniscal injury present. Vibration arthrography promises to be a useful tool in the non-invasive diagnosis of knee disorders.

Auscultation↗
PubMed1987

External fixation in contemporary fracture management.

Important advances have been made within the last two decades in the field of fracture management. The development of the AO internal fixation system and the advances in cast bracing techniques are but two of the improvements worthy of mention. It is, however, in the field of external fixation of fractures that the greatest advances have been made. This paper traces the history of external fixation up to the present day and discusses, with examples, the application of external fixation in the management of complex limb fractures.

Fracture Fixation↗
PubMed1986

Supracondylar fractures of the humerus in children. Treatment by straight lateral traction.

Ninety-eight children with severely displaced supracondylar fractures of the humerus were treated by straight lateral traction. After a mean follow-up period of 3.5 years there were 90 satisfactory and only eight unsatisfactory results. Cubitus varus was present in only four children, which compares favourably with the results of operative treatment. The indications for straight lateral traction, and the advantages of this method, are discussed.

Adolescent↗
PubMed1986

The diagnostic potential of vibration arthrography.

The detection and interpretation of vibration emission from the locomotor system is a sensitive, noninvasive method for the objective study of human joints. The projects reviewed here aimed to identify and categorize vibration signals from various joints, chiefly the neonatal hip and the adult knee. Using a vibration detection and computerized analysis system, various studies have suggested that vibration arthrography will be a potentially valuable diagnostic service for the orthopedic surgeon of the 1990s.

Auscultation↗
PubMed1985

A new injury of the distal radio-ulnar joint.

A case of locked hypersupination of the distal radio-ulnar joint is described in which the ulnar displacement was purely rotational rather than volar. The mechanism of injury is discussed in the light of cadaveric dissections which reproduced the injury.

Humans↗
PubMed1985

High tibial osteotomy in degenerate diseases of the knee.

Between 1970 and 1981, 64 patients underwent 77 tibial osteotomies for degenerate diseases of the knee at the Withers Orthopaedic Centre in Belfast. Records on 11 patients (12 knees) were either missing or inadequate, leaving 53 patients who underwent 65 tibial osteotomies for study. There were 23 males and 30 females, ranging in age from 23 to 75 years (mean 59.8 years). The predominant diagnosis was osteoarthrosis and the indication for operation in all cases was pain. With a follow-up of from two to ten years (mean 4.8 years), 39 knees were assessed as good, 15 as fair (improved, but still symptomatic), and 11 as failures. Patients with valgus deformity did worse than those with varus deformity. The importance of adequate pre-operative assessment is stressed, the operation itself is outlined, and the end result is seen to correlate closely with the degree of correction obtained.

Adult↗
PubMed1984

Injuries of the cervical spine in schoolboy rugby football.

Serious neck injury in rugby football is becoming more common, especially in schoolboys. We report five who presented with spinal cord damage between 1977 and 1983, two in the 1982-83 season. The mechanisms of injury, the treatment, and the outcome are discussed. We suggest measures to reduce the incidence of this most serious injury and draw attention to the appropriate management in the critical phase directly after injury.

Adolescent↗
PubMedDate not supplied

[Current trends in phonoarthrography].

The detection of sounds from the human body for diagnostic purposes has a long history. In the respiratory and circulatory systems such auscultation is a precise science yielding much useful information. The detection and interpretation of joint sounds, however, has been much less successful in its development. In this paper we outline the history of joint auscultation, of phonoarthrography, and of their modern equivalent: vibration arthrography. The relative merits of acoustic and vibration based systems are discussed and these are illustrated with data from simultaneous recordings of several joint phenomena. Finally, we concluded that the future of phonoarthrography as a clinical test is based on its further development using accelerometers rather than microphones as detectors.

Auscultation↗
PubMedDate not supplied

[Vibration arthrography in the diagnosis of knee joint diseases].

In this paper, the principles of vibration arthrography are briefly described and the analysis of the resulting signals is explained. Using such a system, localisation of signals from within the joint is possible. Finally, the development of a vibration-based arthrographic system is proposed as a safe, relatively inexpensive, and totally non-invasive aid to the diagnosis of internal disease of the knee.

Arthroscopy↗
PubMedDate not supplied

[Meniscus signals in vibration arthrography].

The technique of vibration arthrography (VAG) permits the non-invasive evaluation of internal derangements of the knee. Using the computer-assisted recording and analysis equipment which has previously been described, a major survey was conducted into the signal patterns present in subjects with symptomatic knee joints. Two hundred and forty-seven patients were examined, and all of these subsequently underwent arthroscopy. One hundred and seventy-two patients were demonstrated arthroscopically to have a meniscal lesion and 150 of these gave characteristic meniscal signals. This paper discusses the vibration signal patterns associated with the various types of meniscal tear and the effect of surgery on the meniscal signal. The overall accuracy of vibration arthrography in the diagnosis of meniscal pathology was 86%. In many cases, not only could the site of a meniscal tear be determined, but the type of tear could be diagnosed with reasonable accuracy.

Arthrography↗