|Osteoarthritis in the stifle joint after various surgical techniques to repair CCL rupture
It is strongly recommended to do surgical repair if a rupture of the cranial cruciate ligament (CCL) is diagnosed in dogs. But osteoarthritis developes also after surgery. Not only individual factors, also the surgical technique determines if a slow or a more rapid development of these changes has to be expected. A very informative study with surprising results!|
|Osteoarthritis (OA) progresses in the canine cranial cruciate ligament (CCL) deficient stifle. Progression of OA is also documented in canine patients after various surgical repair techniques for this injury.
We evaluated the radiographic arthritic changes in canine stifle joints that have sustained a CCL injury, and compared radiographic OA scores between Tibial Plateau Leveling Osteotomy (TPLO)surgery patients receiving a medial parapatellar exploratory arthrotomy for CCL remnant removal versus those receiving a limited caudal medial arthrotomy without removal of the CCL remnants.
Medial/lateral and caudal/cranial stifle radiographs were obtained before surgery, immediately following TPLO surgery and at 7-38 months (mean 20.5) after surgery.
Sixty-eight patients (72 stifles) were included in the study.
The cases were divided into two groups.
The patients in group 1 (n = 49 patients, 51 stifles) had a limited caudal medial arthrotomy, and patients in group 2 (n = 19 patients, 21 stifles) had a medial parapatellar open arthrotomy. A previously described radiographic osteoarthritis scoring system was used to quantify changes in both of the groups.
The age, weight, OA scores, initial tibial plateau angle, final tibial plateau angle, and the change in angle were compared between the groups.
The results showed that there was significantly less progression of OA in the group that had the limited caudal medial, arthrotomy, versus a medial parapatellar open arthrotomy.
There was a significant advancement of the OA scores of patients that had TPLO surgery.
Source: Lineberger JA, et al (2005): Comparison of radiographic arthritic changes associated with two variations of tibial plateau leveling osteotomy. In: Vet Comp Orthop Traumatol. 2005;18(1):13-7.
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