Breed: Bichon Frise, nickname: Tuantuan Age: 2 years old Gender: Female Weight: 2.3Kg Due to grade 2 dislocation of the medial patella, torsion of the proximal tibia and intermittent claudication, it was decided to undergo trochlear groove replacement surgery for treatment. During the operation, it was found that the pulley groove was deformed and worn. The BlueSAO press-fit biological pulley groove replacement System (PGR) #1 implant was used for replacement. The operation was successfully completed. With minimal surgical damage, recovery will be faster. I can jog with a load five days after the operation. I hope he will recover soon! Thank you to Dr. Sun Kang from Nuobeikang Animal hospital in Qingdao, shandong for sharing the clinical case of the BlueSAO pressure-fitting biological pulley groove replacement system! The pulley groove replacement surgery will bring a painless joint to patients with patellar dislocation. Doctor Jia Xinsheng's view is that the pulley groove replacement surgery will bring a painless joint to patients with patellar dislocation, and he suggests that the pulley groove replacement surgery be adopted for eligible cases of patellar dislocation. For instance, cases where the pulley groove is flat, deformed, poorly developed, too narrow, or where the veterinarian's assessment of the deepening of the pulley groove fails to yield effective results, etc., all recommend the use of pulley groove replacement.