Ultrasound-guided sciatic and femoral nerve block for perioperative pain management in a Thai crossbreed dog undergoing Tibial Plateau Leveling Osteotomy (TPLO): A case report

Abstract

This case report presents the use of ultrasound-guided sciatic and femoral nerve blocks as an alternative analgesic
technique for perioperative pain control in a Thai crossbreed dog undergoing left tibial plateau leveling osteotomy
(TPLO). The orthopedic examination revealed a 4/5 left hindlimb lameness score, with positive results on both the
tibial compression test (TCT) and cranial drawer test (CDT). Radiographic evaluation showed the absence of a fat pad
sign and osteophyte formation around the left stifle joint. A definitive diagnosis of left cranial cruciate ligament rupture
(CCLR) was made. The dog underwent CCLR correction via TPLO, with perioperative pain managed through
ultrasound-guided sciatic and femoral nerve blocks at the Kasetsart University Veterinary Teaching Hospital (KUVTH),
Bangkok, Thailand. The surgery was completed with favorable outcomes, and the dog was discharged 3 days
postoperatively.