Plaintiff's submissions were sufficient to raise a triable issue of fact as to whether he suffered a "serious injury" to his right knee. While defendant's experts found that plaintiffs injuries were degenerative, plaintiff's doctors were unanimous in concluding that the subject accident was the sole competent producing cause of plaintiff's knee injuries, based upon (1) their individual examinations; (2) MRI results; and (3) the necessity of surgery to repair a tear in the medial meniscus, a partial tear of the anterior cruciate ligament, chondromalacia, synovitis, and fibrosis ( see Pommells v Perez, 4 NY3d 566; Colon v Bernabe, 65 AD3d 969, 970). It also bears noting that plaintiff was 37 years old when he was hit on his right side by defendant's taxi, he had no prior knee problems or injuries to his right leg, and his right knee surgery took place within four months of the accident.