Bertrand H. Perey
University of British Columbia
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Bertrand H. Perey.
Journal of Bone and Joint Surgery, American Volume | 1999
David Ring; Bertrand H. Perey; Jesse B. Jupiter
Twenty-two elderly patients (average age, seventy-two years) who had an atrophic, unstable, ununited fracture of the humeral diaphysis were managed with plate-and-screw fixation and application of an autogenous bone graft from the iliac crest. Fifteen of the patients had had at least one previous operation in an attempt to obtain union of the fracture. One patient had an active infection and two had a quiescent infection, all with Staphylococcus epidermidis. The average duration of nonunion before the patients were first seen by us was two years and four months (range, five months to sixteen years). Fifteen of the nonunions were synovial. In each patient, at least one modification of the standard technique of plate-and-screw fixation was needed as a result of osteopenia. In order to enhance fixation, the standard protocol incorporated the use of a long plate (with an average of eleven holes and an average length that was 76 percent of that of the bone), a plate with a blade (used in thirteen patients), and replacement of loose, 4.5-millimeter cortical-bone screws with 6.5-millimeter cancellous-bone screws (twelve patients). Spiked nuts (Schuhli nut; Synthes, Paoli, Pennsylvania) that lock the screws to the plate, creating a solid point of fixation analogous to a blade, were incorporated into the protocol when they became available (used in six patients). In five limbs, the nonunion was associated with an osseous defect that could not be addressed by shortening of the bone alone. Three of these limbs were stabilized with a bridge plate that had been contoured to stand away from the bone at the site of nonunion (so-called wave-plate osteosynthesis), and the remaining two limbs were stabilized with a combination of intramedullary and extramedullary plates. In one of these two limbs, the extramedullary plate was contoured (that is, a wave plate). The fracture united in twenty (91 percent) of the patients. There was no progressive loosening or breakage of a fixation device, even in two patients who had radiographs that were suggestive of an incomplete union. Five of the patients were followed for a limited duration (average, one year and six months) as a result of death or illness. They had two excellent results, two good results, and one poor result according to a modification of the rating system of Constant and Murley. The remaining seventeen patients, including the two who had a persistent nonunion, were followed for an average of three years and one month (range, two years to five years and ten months). They had significant improvements in all of the functional scores at the most recent follow-up evaluation: the average score according to the modified system of Constant and Murley increased from 9 to 72 points (p < 0.001), the average score according to the Enforced Social Dependency Scale decreased from 39 to 9 points (p < 0.001), and the average score based on the Disabilities of the Arm, Shoulder, and Hand Questionnaire decreased from 77 to 24 points (p < 0.001). According to the scores based on the Disabilities of the Arm, Shoulder, and Hand Questionnaire, nine of the seventeen patients who had been followed for more than two years had an excellent result, four had a good result, two had a fair result, and the two who had a persistent nonunion had a poor result. Complications included postoperative delirium, a stitch abscess, transient radial nerve palsy, a fracture distal to the plate, and the need for a blood transfusion, in one patient each. Two patients had a fibrous union. There were no major medical complications. An unstable, united fracture of the humeral diaphysis can be extremely disabling and may threaten the ability of an elderly patient to function independently. Operative treatment can be very successful when the techniques of plate-and-screw fixation are modified to address osteopenia and relative or absolute loss of bone. Healing of the fracture substantially improves function and the degree of independence
Injury-international Journal of The Care of The Injured | 2014
Bradley D. Ashman; Gerard P. Slobogean; Trevor Stone; Darius Viskontas; Farhad O. Moola; Bertrand H. Perey; Dory S. Boyer; Robert G. McCormack
BACKGROUND Operative fixation of displaced, mid-shaft clavicle fractures has become an increasingly common practice. With this emerging trend, data describing patient outcomes with longer follow-up are necessary. PATIENTS AND METHODS We retrospectively reviewed the medical records of subjects treated with plate fixation for displaced mid-shaft clavicle fractures from 2003 to 2009 at a Level I trauma hospital. All subjects were greater than 12 months post-index surgery. Treatment involved ORIF with either a low-contact dynamic compression plate (LCDC) or a contoured plate (pre-contoured or pelvic reconstruction plate). Our primary outcome was reoperation for any indication. RESULTS 143 subjects were included. The mean age was 36 ± 14 years and the mean time to reoperation or chart review was 33 months. Contoured plates were used in 64% of cases and LCDC plates were used in the remaining subjects. Twenty-nine subjects (20%) underwent reoperation: 23.5% of subjects treated with LCDC plates and 18.5% of subjects treated with contoured plates (p=0.52). Indications for reoperation included implant irritation (n=25), implant failure (n=2), and non-union (n=2). There was near statistically significant association with reoperation and female gender (p=0.05) but no association between reoperation and age (p=0.14), fracture class (p=0.53), plate type (p=0.49), or plate location (p=0.93). The mean QuickDASH score for the population surveyed was 8.8 (5.5-12.1; 95% CI) with near statistically significant and clinically relevant difference between those considering reoperation and those not 22.3 (8.6-36.0; 95% CI) versus 6.7 (3.6-9.8; 95% CI). CONCLUSIONS This study represents a large series of displaced clavicle fractures treated with open reduction and plate fixation. Reoperation following plate fixation is relatively common, but primarily due to implant irritation. No difference in reoperation rates between plate types or location could be detected in our current sample size. Also, excellent functional outcomes continue to be observed several years after clavicle fracture fixation.
Journal of Hand Surgery (European Volume) | 2013
Kevin C. Chung; H. Myra Kim; Steven C. Haase; Jeffrey N. Lawton; Kagan Ozer; Jennifer F. Waljee; Kate W. Nellans; Sunitha Malay; Melissa J. Shauver; Tamara D. Rozental; Paul Appleton; Edward Rodriguez; Lindsay Herder; Katiri Wagner; Philip E. Blazar; Brandon E. Earp; W. Emerson Floyd; Katherine S. Pico; Marc J. Richards; David S. Ruch; Suzanne Finley; Loree K. Kalliainen; James W. Fletcher; Cherrie A. Heinrich; Christian M. Ward; Brian W. Hill; Brent Bamberger; Carla Robinson; Brandi Palmer; David Ring
The Wrist and Radius Injury Surgery Trial (WRIST) study group is a collaboration of 21 hand surgery centers in the United States, Canada, and Singapore, to showcase the interest and capability of hand surgeons to conduct a multicenter clinical trial. The WRIST study group was formed in response to the seminal systematic review by Margaliot et al and the Cochrane report that indicated marked deficiency in the quality of evidence in the distal radius fracture literature. Since the initial description of this fracture by Colles in 1814, over 2,000 studies have been published on this subject; yet, high-level studies based on the principles of evidence-based medicine are lacking. As we continue to embrace evidence-based medicine to raise the quality of research, the lessons learned during the organization and conduct of WRIST can serve as a template for others contemplating similar efforts. This article traces the course of WRIST by sharing the triumphs and, more important, the struggles faced in the first year of this study.
Journal of Shoulder and Elbow Surgery | 2009
Michael D. McKee; Christian Veillette; Jeremy A. Hall; Emil H. Schemitsch; Lisa M. Wild; Robert G. McCormack; Bertrand H. Perey; Thomas J. Goetz; Mauri Zomar; Karyn Moon; Scott Mandel; Shirlet Petit; Pierre Guy; Irene Leung
Journal of Hand Surgery (European Volume) | 2005
R. Grewal; Bertrand H. Perey; M. Wilmink; K. Stothers
Journal of Hand Surgery (European Volume) | 2004
Peter C. Zarkadas; Peter T. Gropper; Neil J. White; Bertrand H. Perey
Journal of Shoulder and Elbow Surgery | 2001
David Ring; Michael D. McKee; Bertrand H. Perey; Jesse B. Jupiter
Injury-international Journal of The Care of The Injured | 2013
Robert G. McCormack; K. Panagiotopolous; R. Buckley; M. Penner; Bertrand H. Perey; Graham Pate; Thomas J. Goetz; M. Piper
Orthopaedic Proceedings | 2010
Robert G. McCormack; Mauri Zomar; Kostas P. Panagiotopoulos; Richard Buckley; Murray John Penner; Bertrand H. Perey; Graham Pate; Thomas J. Goetz; Michael S. Piper