Presented in part at the 35th Annual Veterinary Orthopedic Society Conference, Big Sky, MT, 2008.
Evaluation of a Transcondylar Toggle System for Stabilization of the Cranial Cruciate Deficient Stifle in Small Dogs and Cats
Article first published online: 8 DEC 2009
© Copyright 2009 by The American College of Veterinary Surgeons
Volume 38, Issue 8, pages 975–982, December 2009
How to Cite
KUNKEL, K. A. R., BASINGER, R. R., SUBER, J. T. and GERARD, P. D. (2009), Evaluation of a Transcondylar Toggle System for Stabilization of the Cranial Cruciate Deficient Stifle in Small Dogs and Cats. Veterinary Surgery, 38: 975–982. doi: 10.1111/j.1532-950X.2009.00563.x
- Issue published online: 8 DEC 2009
- Article first published online: 8 DEC 2009
- Submitted September 2008; Accepted May 2009
Objective— To evaluate use of a transcondylar toggle system (TCTS) for stabilization of the cranial cruciate ligament (CrCL) deficient stifle in small dogs and cats.
Study Design— Prospective clinical study.
Animals— Small dogs (<7 kg; n=14) and cats (2) with CrCL-associated lameness of <3 months duration and a tibial plateau angle <32°.
Methods— Affected animals had an extracapsular CrCL repair using the TCTS. Lameness score, muscle atrophy, osteoarthritis (OA) score, and range of motion (ROM) were evaluated preoperatively, and at 6 weeks and 7–10 months postoperatively.
Results— Operative time was 75 ± 16 minutes. Fifty-six percent required >1 bone tunnel attempts. One dog required revision at 2 weeks because of suture loosening. All stifles were stable at 6 weeks postoperatively. Fifteen animals were available for follow-up (7–10 months). Lameness improved significantly at 6 weeks (P<.0001), whereas muscle atrophy was worse at 6 weeks (P=.008) but improved at 7–10 months (P<.0001). OA scores were unchanged at 6 weeks (P=.08) but were significantly worse at 7–10 months (P<.0001). ROM remained unchanged at 6 weeks (P=1) and 7–10 months (P=.6).
Conclusions— The medially placed toggle provides a reliable short-term proximal anchor for the extracapsular suture with outcomes similar to other extracapsular techniques. The aiming device and drill bit are not recommended in their current form.
Clinical Relevance— The TCTS appears to be a well-tolerated technique for proximal suture anchoring in extracapsular CrCL repair in small dogs and cats where instrumentation and anatomic constraints preclude other techniques.