Objective—To determine the outcome and effect of
surgical technique on limb function after surgery for
rupture of the cranial cruciate ligament (RCCL) and
injury to the medial meniscus in Labrador Retrievers.
Study Design—Prospective clinical study.
Animals—131 Labrador Retrievers with unilateral
RCCL and injury to the medial meniscus and 17 clinically
normal Labrador Retrievers.
Procedure—Affected dogs had partial or complete
medial meniscectomy and lateral suture stabilization
(LSS), intracapsular stabilization (ICS), or tibial
plateau leveling osteotomy (TPLO). Limb function
was measured before surgery and 2 and 6 months
after surgery. Treated dogs were evaluated to
determine the probability that they could be differentiated
from clinically normal dogs and tested to
determine the likelihood that they achieved
Results—No difference was found between LSS or
TPLO groups, but dogs treated with ICS had significantly
lower ground reaction forces at 2 and 6
months. Compared with clinically normal dogs only,
14.9% of LSS-, 15% of ICS-, and 10.9% of TPLO-treated
dogs had normal limb function. Improvement was
seen in only 15% of dogs treated via ICS, 34% treated
via TPLO, and 40% treated via LSS.
Conclusions and Clinical Relevance—Surgical technique
can influence limb function after surgery.
Labrador Retrievers treated via LSS, ICS, or TPLO for
repair for of RCCL and medial meniscal injury managed
with partial or complete meniscectomy infrequently
achieve normal function. Results of LSS and TPLO are
similar and superior to ICS. (J Am Vet Med Assoc 2005;226:232–236)