ORCID Profile
0000-0002-7442-4493
Current Organisation
Macquarie University
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Applied Sociology, Program Evaluation And Social Impact Assessment | Statistics | Applied Statistics | Urban And Regional Studies
Studies in human society | Political science and public policy | Mathematical sciences |
Publisher: Elsevier BV
Date: 10-2021
Publisher: Wiley
Date: 05-1988
DOI: 10.1111/J.1445-2197.1988.TB01090.X
Abstract: The purpose of this study was to elucidate tissue changes occurring within an ischaemic flap by monitoring the blood biochemistry, and to evaluate these changes in relation to ultimate flap viability. A rabbit epigastric free flap was made ischaemic for 4 days at 6 degrees C, then revascularized by anastomosis of its femoral artery and vein. An identical free flap immediately revascularized in another group of rabbits served as a control. The viability of the free flap, as well as various biochemical parameters studied by drawing blood from a catheter in the ear vein, were observed daily. Immediately after the revascularization of ischaemic flaps, there was a 16-fold increase in the plasma levels of creatine kinase (CK) and a smaller but significant 1.5-fold to 2.0-fold increase in lactate dehydrogenase (LDH) and aspartate aminotransferase (AST). In flaps which ultimately failed by 7 days post-ischaemia, the plasma levels of CK, LDH and AST peaked at day 2 post-ischaemia at 68, 13 and 8 times normal respectively, whereas in flaps which survived, the levels of these enzymes recovered to normal by day 3 post-ischaemia. These enzymic changes are probably due to a combination of ischaemic changes in the flap vasculature, ischaemic changes in the flap muscle, and inflammatory changes in the surrounding abdominal tissue. The plasma levels of CK at any time post-ischaemia, and particularly in the first 24 h, were significantly higher in ischaemic flaps which failed compared with those which survived. This parameter is therefore proposed as a possible means of predicting potential flap failure after ischaemic insult, in time to make appropriate surgical intervention.
Publisher: Elsevier BV
Date: 05-1989
DOI: 10.1016/S0363-5023(89)80013-9
Abstract: This is the first report of combined digital distraction lengthening followed by free vascularized metatarsophalangeal joint transfer. This restored mobility, stability, length, and growth potential in the ring finger of the mutilated hand in a child.
Publisher: Journal of Neurosurgery Publishing Group (JNSPG)
Date: 08-1989
DOI: 10.3171/JNS.1989.71.2.0283
Abstract: ✓ Use of a vascularized free fibular graft is described as a method of replacing excised cervical vertebrae when severe instability is present. The vascularized bone graft heals more rapidly and with greater strength than a nonvascularized autogenous graft.
Publisher: Oxford University Press (OUP)
Date: 12-1992
Abstract: A young woman with a silicone lunate prosthesis for avascular necrosis developed painful lytic lesions in the distal ulna and the triquetrum. At reoperation, abundant reactive synovitis was found extending into those bone lesions. Histologic examination of the curetting s les revealed granulation tissue with histiocytes and many multinucleated giant cells containing refractile particles consistent with silicone. The authors report a giant cell lesion of the bone that radiographically and microscopically mimicked a neoplasm.
Publisher: Elsevier BV
Date: 09-1989
DOI: 10.1016/S0363-5023(89)80084-X
Abstract: In tendon grafting the weakest area is the junction between the grafted tendon and bone. In dogs a strong union between tendon and bone can be produced by threading the flexor carpi radialis tendon through a hole drilled in the radius. In experimental repair of canine flexor tendons, 3 weeks after operation the strength of the union between a composite bone-tendon graft prepared in this way is double that of the bone-tendon junction of a conventional graft. Use of prefabricated bone-tendon grafts should permit earlier postoperative movement and limit formation of adhesions between a tendon graft and its bed.
Publisher: Elsevier BV
Date: 09-1989
DOI: 10.1016/0007-1226(89)90040-4
Abstract: The microvascular anastomosis of vessels with a diameter difference in the range of 3:1 can be a difficult surgical exercise, with the risk of bleeding or thrombosis. Five different techniques for dealing with such asymmetries were investigated in a series of autogenous rabbit vein grafts. An assessment was made of patency rates and of factors involved in the performance of the anastomoses. It is concluded that the end-to-end with oblique cut procedure is the most suitable for the clinical situation.
Publisher: Elsevier BV
Date: 05-1987
DOI: 10.1016/0007-1226(87)90131-7
Abstract: Loss of weight-bearing skin of the foot produces a difficult reconstructive problem. A case is presented of severe bilateral lower limb trauma in which the right leg was utated below the knee and two free flaps taken from the utated foot were used for cover of the damaged left foot and the utation stump.
Publisher: Elsevier BV
Date: 1989
DOI: 10.1016/0363-5023(89)90059-2
Abstract: Vascularized tendon grafts were compared with nonvascularized tendon grafts in a primate experimental model. In four monkeys, seven vascularized extensor hallucis longus grafts were placed in the foot's digital fibroosseous canal and these were compared with eight nonvascularized tendon grafts similarly placed in the opposite extremities. The juncture techniques and postoperative protocols were identical for both tendon groups. All tendons were explored 5 months after insertion. The vascular pedicle was patent in all vascularized tendons. Three tendon ruptures occurred in nonvascularized tendons and only one rupture occurred in a vascularized tendon. The digits with vascularized tendons demonstrated a significantly better simulated total active motion (117 degrees versus 128 degrees, p less than 0.05) than digits with nonvascularized tendons. The difference was even more significant when a localized tenolysis of the proximal juncture of the tendon graft was performed (215 degrees versus 138 degrees, p less than 0.01). This study supports the concept that vascularized tendon grafts may be advantageous in scarred tendon beds.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 03-2002
DOI: 10.1097/00003086-200203000-00009
Abstract: Those of us who have trained and practice our profession in developed countries, frequently overlook the orthopaedic, and general medical needs, of the developing world. After brief periods in India and more than 4 years practicing in Cambodia, the opportunities for the orthopaedic surgeon to make an impact on patient care and medical education are clear. The challenge of treating patients with untreated congenital and traumatic deformity, advanced tumors, and land mine injuries can be met with dedication to medical education and skills transfer to local personnel. I have experienced many challenges, balanced by the satisfaction of teaching a generation of surgeons and directly helping so many who would have no other opportunity for care, while providing a worthwhile experience personally and for my family. Many will find such work rewarding, knowing that they will leave their mark for good on a hurting world.
Publisher: British Institute of Radiology
Date: 07-1996
DOI: 10.1259/0007-1285-69-823-673
Abstract: Five patients were given single dose irradiation in an attempt to prevent heterotopic ossification after bone and joint surgery in sites other than hips. All patients were at risk for the development of post-operative heterotopic ossification. Two patients were treated with 6 Gy and three patients were treated with 7 Gy the day after operation. No complications were encountered. Post-operative heterotopic ossification did not develop in patients who received 7 Gy, whereas treatment failed in the two patients who received 6 Gy. Because this is a case report study, no conclusion could be made. Further investigation is needed to assess the efficacy of post-operative single dose irradiation in heterotopic ossification prophylaxis in sites other than hips in high risk patients.
Publisher: Mary Ann Liebert Inc
Date: 02-2005
Abstract: Since 2001, a monthly telemedicine clinic has helped provide health care to residents in a remote region in Cambodia. Physicians at Massachusetts General Hospital and Brigham and Women's Hospital in Boston, Massachusetts, and Sihanouk Hospital of HOPE in Phnom Penh, Cambodia, provide consultations via e-mail to a mobile nurse in the district of Rovieng, Cambodia. We describe the operations of the monthly clinic and report the results of a retrospective case review of the first 28 months of consultations. We also report the results of a satisfaction and willingness to pay survey. A total of 264 visits were made during the 28 monthly sessions. Mean duration of chief complaint at initial visit declined from 37 months to 8 months during the first and last 6 months of the study period, respectively. Thirty-six percent (n = 76) of new patients complained of abdominal pain. Nine percent (n = 20) of new patients were given an empiric diagnosis of goiter. The percent of patients requiring referral to a hospital outside of the village decreased over time. All patients surveyed were either "very satisfied" or "satisfied" with their care, and most patients were willing to pay for a visit, with a median amount of USD 0.63. We conclude that store-and-forward e-mail consultative support for mobile nonphysician health care workers is a feasible model for delivering care in the developing world. Further research is needed to demonstrate improvement in health status, cost effectiveness, and sustainability.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 04-1985
Publisher: Elsevier BV
Date: 1988
DOI: 10.1016/0007-1226(88)90151-8
Abstract: A technique is presented that maintains control of the short suture end in microsurgical suture tying. This technique significantly shortens the time taken to tie a microsurgical knot. It reduces the number of manoeuvres required to complete the knot and by maintaining control of the short suture end, prevents adherence to soft tissue.
Publisher: BMJ
Date: 07-2023
DOI: 10.1136/BMJOPEN-2023-075008
Abstract: Addressing clinical variation in elective surgery is challenging. A key issue is how to gain consensus between largely autonomous clinicians. Understanding how the consensus process works to develop and implement perioperative pathways and the impact of these pathways on reducing clinical variation can provide important insights into the effectiveness of the consensus process. The primary objective of this study is to understand the implementation of an organisationally supported, consensus approach to implement perioperative care pathways in a private healthcare facility and to determine its impact. A mixed-methods Effectiveness-Implementation Hybrid (type III) pre–post study will be conducted in one Australian private hospital. Five new consensus-based perioperative care pathways will be developed and implemented for specific patient cohorts: spinal surgery, radical prostatectomy, cardiac surgery, bariatric surgery and total hip and knee replacement. The in idual components of these pathways will be confirmed as part of a consensus-building approach and will follow a four-stage implementation process using the Exploration, Preparation, Implementation and Sustainment framework. The process of implementation, as well as barriers and facilitators, will be evaluated through semistructured interviews and focus groups with key clinical and non-clinical staff, and participant observation. We anticipate completing 30 interviews and 15–20 meeting observations. Administrative and clinical end-points for at least 152 participants will be analysed to assess the effectiveness of the pathways. This study received ethical approval from Macquarie University Human Research Ethics Medical Sciences Committee (Reference No: 520221219542374). The findings of this study will be disseminated through peer-reviewed publications, conference presentations and reports for key stakeholders.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 11-2010
Start Date: 07-2004
End Date: 05-2006
Amount: $102,900.00
Funder: Australian Research Council
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