Extracorporeal shock wave therapy improves short-term limb use after canine tibial plateau leveling osteotomy.
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OBJECTIVE: To determine the influence of postoperative extracorporeal shock wave therapy (ESWT) on hind limb use after tibial plateau leveling osteotomy (TPLO). STUDY DESIGN: Randomized, prospective clinical trial. ANIMALS: Sixteen client-owned dogs, 2 to 10years old weighing 18 to 75kg. METHODS: Dogs were randomly assigned to treatment cohorts, TPLO with ESWT (ESWT, n = 9) or TPLO without ESWT (control, n = 7). Treatment consisted of 1000 pulses at 0.15mJ/mm2 immediately and 2weeks after surgery. Subjective pain, stifle goniometry, stifle circumference, peak vertical force (PVF) and vertical impulse (VI) were measured before surgery, prior to ESWT, and 2 and 8weeks after surgery. Measures were compared between treatments at each time point and among time points for each treatment (P<.05). RESULTS: The PVF (5.51.0N/kg, meanSD) and VI (0.670.14N-s/kg) of surgically treated limbs in the ESWT cohort were higher 8weeks after surgery compared with preoperative (3.81.1N/kg, P<.0001 and 0.470.21N-s/kg, P = .0012, respectively) values. In the control cohort, PVF (2.91.3N/kg, P = .0001) and VI (0.330.20N-s/kg, P = .0003) 2weeks after surgery and VI (0.420.2N-s/kg, P = .0012) 8weeks after surgery were lower (4.59 2.33N/kg and 0.5920.35N-s/kg, respectively) than before surgery. Other parameters did not differ between groups. CONCLUSION: Weight bearing increased faster after TPLO in dogs treated with postoperative ESWT. CLINICAL SIGNIFICANCE: This study provides evidence to consider adjunct ESWT after TPLO.
