Thesis
Evaluation of 4.5mm traditional and 4.5mm cannulated drill bits for minimally invasive removal of articular cartilage from the distal intertarsal and tarsometatarsal joints in equine cadaver limbs
Washington State University
Master of Science (MS), Washington State University
05/2021
DOI:
https://doi.org/10.7273/000004263
Handle:
https://hdl.handle.net/2376/125007
Abstract
The objectives of this project were to 1) compare 4.5 mm cannulated and 4.5 mm traditional rotary drill bits when removing articular cartilage from the distal intertarsal (DIT) and tarsometatarsal (TMT) joints in horses and 2) prove feasibility of using cannulated drill bits for facilitated ankylosis of the distal tarsal joints. Cadaver limbs from 11 horses were randomly assigned to either the cannulated or traditional bit group with one hind limb from each horse assigned to each group. Transarticular drilling using a three-drill-tract technique was performed on all limbs. The joints were then disarticulated and denuded of soft tissue. Articular surfaces were grossly observed and then digitally photographed to allow planimetry measurements to record the total articular surface area and the area of articular cartilage disruption. One horse and a total of 3 joints from 2 additional horses were excluded from the study due to inability to disarticulate the distal tarsal joints. Gross evaluation revealed one DIT joint and one TMT joint that showed no areas of cartilage disruption. There was no significant difference in area of articular cartilage disruption between cannulated drill bit group (4.56 ± 1.45 cm2) and the traditional drill bit group (3.98 ± 2.15 cm2) within the DIT joint (p = 0.33). In the TMT joint, the cannulated drill bits (1.95 ± 1.40 cm2) removed significantly less articular cartilage than the traditional drill bits (3.29 ± 1.23 cm2) (p = 0.005). Further clinical evaluation is required to determine if the difference in articular cartilage disruption within the TMT joint is large enough to effect success rates for facilitated ankylosis. Although surgeries were not timed, procedural times for the cannulated drill bit group were prolonged due to equipment related complications.
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Details
- Title
- Evaluation of 4.5mm traditional and 4.5mm cannulated drill bits for minimally invasive removal of articular cartilage from the distal intertarsal and tarsometatarsal joints in equine cadaver limbs
- Creators
- Stacy Caffey
- Contributors
- Claude A Ragle (Advisor) - Washington State University, Veterinary Clinical Sciences, Department of
- Awarding Institution
- Washington State University
- Academic Unit
- Veterinary Medicine, College of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Identifiers
- 99900896415001842
- Language
- English
- Resource Type
- Thesis