A - Left cranial cruciate ligament rupture with meniscal cartilage tear   左侧前十字韧带断裂伴半月板撕裂    
       
                         B - Left caudal cruciate ligament rupture with no meniscal cartilage tear    左侧后十字韧带断裂不伴有半月板撕裂    
       
                         C - Left luxating patella    左侧髌骨脱位    
       
                         D - Left cranial cruciate ligament rupture with no meniscal cartilage tear    左侧前十字韧带断裂不伴有半月板撕裂