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  • Author or Editor: Clara S. S. Goh x
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Abstract

Objective—To compare the mechanical behaviors of a semicontoured, locking compression plate–rod (LCP-rod) construct and an anatomically contoured, limited-contact dynamic compression plate–rod (LC–DCP-rod) construct applied to experimentally induced gap fractures in canine femora.

Sample Population—16 femora from 8 cadaveric dogs.

Procedures—8 limbs from 8 dogs were assigned to the LCP-rod construct group or the LC–DCP-rod construct group. In each femur, a 39-mm mid-diaphyseal ostectomy was performed at the same plate location and the assigned construct was applied. Construct stiffness and ostectomy gap subsidence were determined before and after cyclic axial loading (6,000 cycles at 20%, 40%, and 60% of live body weight [total, 18,000 cycles]). Three constructs from each group further underwent 45,000 cycles at 60% of body weight (total, 63,000 cycles). Following cyclic loading, mode of failure during loading to failure at 5 mm/min was recorded for all constructs.

Results—After 18,000 or 63,000 cycles, construct stiffness did not differ significantly between construct groups. No implant failure occurred in any construct that underwent 63,000 cycles. In both construct groups, ostectomy gap subsidence similarly increased as axial load increased but did not change after 18,000 cycles. Mean ± SEM loads at failure in the LCP-rod (1,493.83 ± 200.12 N) and LC–DCP-rod (1,276.05 ± 156.11 N) construct groups were not significantly different. The primary failure event in all constructs occurred at the screw hole immediately distal to the ostectomy.

Conclusions and Clinical Relevance—Biomechanically, the semicontoured LCP-rod construct is similar to the anatomically contoured LC–DCP-rod system.

Full access
in American Journal of Veterinary Research

Abstract

OBJECTIVE To compare owner satisfaction between custom-made stifle joint orthoses and tibial plateau leveling osteotomy (TPLO) for the management of medium- and large-breed dogs with cranial cruciate ligament disease (CCLD).

DESIGN Owner survey.

SAMPLE 819 and 203 owners of dogs with CCLD that were managed with a custom-made stifle joint orthosis or TPLO, respectively.

PROCEDURES Client databases of an orthosis provider and veterinary teaching hospital were reviewed to identify potential survey respondents. An online survey was developed to evaluate owner-reported outcomes, complications, and satisfaction associated with the nonsurgical (orthosis group) and surgical (TPLO group) interventions. Survey responses were compared between groups.

RESULTS The response rate was 25% (203/819) and 37% (76/203) for the orthosis and TPLO groups, respectively. The proportion of owners who reported that their dogs had mild or no lameness and rated the intervention as excellent, very good, or good was significantly greater for the TPLO group than for the orthosis group. However, ≥ 85% of respondents in both groups reported that they would choose the selected treatment again. Of 151 respondents from the orthosis group, 70 (46%) reported skin lesions associated with the device, 16 (11%) reported that the dog subsequently underwent surgery, and 10 (7%) reported that the dog never tolerated the device.

CONCLUSIONS AND CLINICAL RELEVANCE Results indicated high owner satisfaction rates for both interventions. Owners considering nonsurgical management with an orthosis should be advised about potential complications such as persistent lameness, skin lesions, patient intolerance of the device, and the need for subsequent surgery.

Restricted access
in Journal of the American Veterinary Medical Association