OTHER TOPICS IN THIS CHAPTER
- Imaging Techniques in Equine Lameness
- Arthroscopy in Equine Lameness
- Digital Sheath Tenosynovitis in Horses
- Disorders of the Metacarpus in Horses
- Tendinitis in Horses
- Suspensory Desmitis in Horses
- Inferior Check Desmitis in Horses
- Bucked Shins in Horses
- Exostoses of the Second and Fourth Metacarpal Bones in Horses
- Fractures of the Small Metacarpal (Splint) Bones in Horses
- Fracture of the Third Metacarpal (Cannon) Bone in Horses
- Rupture of the Common Digital Extensor Tendon in Horses
- Disorders of the Metatarsus in Horses
- Bucked Shins/Dorsal Cortical Fractures of the Third Metatarsal Bone in Horses
- Exostoses of the Metatarsal Bones in Horses
- Diaphyseal Fracture of the Third Metatarsal Bone in Horses
- Incomplete Longitudinal Fractures of the Plantar Aspect of the Third Metatarsal Bone in Horses
- Focal Bone Reaction and Avulsion Fractures of the Third Metatarsal Bone in Horses
- Fractures of the Second and Fourth Metatarsal Bones in Horses
- Enostosis-like Lesions of the Third Metatarsal Bone in Horses
- Disorders of the Tarsus in Horses
- Failure of Ossification of the Distal Tarsal Bones in Horses
- Osteoarthritis of the Distal Tarsal Joints in Horses
- Osteoarthritis of the Talocalcaneal Joint in Horses
- Osteoarthritis of the Tarsocrural Joint in Horses
- Synovitis/Capsulitis of the Tarsocrural Joint in Horses
- Osteochondrosis of the Tarsocrural Joint in Horses
- Osteitis of the Calcaneus in Horses
- Fractures of the Distal Tarsal Bones in Horses
- Fracture of the Talus in Horses
- Fracture of the Fibular Tarsal Bone (Calcaneus) in Horses
- Fracture of the Lateral Malleolus of the Tibia in Horses
- Tarsal Joint Luxation in Horses
- Desmitis of the Collateral Ligaments of the Tarsus in Horses
- Rupture of the Fibularis (Peroneus) Tertius in Horses
- Stringhalt
- Curb in Horses
- Disorders of the Tarsal Sheath in Horses
- False Thoroughpin in Horses
- Luxation of the Superficial Digital Flexor Tendon from the Tuber Calcanei in Horses
- Gastrocnemius Tendinitis in Horses
- Calcaneal Bursitis in Horses
- Capped Hock
- Disorders of the Stifle in Horses
- Osteochondrosis of the Stifle in Horses
- Subchondral Cystic Lesions in Horses
- Meniscus and Meniscal Ligament Injuries in Horses
- Cranial and Caudal Cruciate Ligament Injuries in Horses
- Collateral Ligament Injuries in Horses
- Intermittent Upward Fixation of the Patella and Delayed Patella Release in Horses
- Fragmentation of the Patella in Horses
- Patellar Luxation in Horses
- Patellar Ligament Injuries in Horses
- Gonitis and Osteoarthritis in Horses
- Chondromalacia of the Femoral Condyles in Horses
- Fractures of the Stifle in Horses
- Disorders of the Back and Pelvis in Horses
- Spinal Processes and Associated Ligaments in Horses
- Articular Process−Synovial Intervertebral Articulation Complexes in Horses
- Vertebral Bodies and Discs in Horses
- Muscle Strain and Soreness in Horses
- Lumbosacral Junction Abnormalities in Horses
- Sacroiliac Joint Abnormalities in Horses
- Developmental Orthopedic Disease in Horses
- Osteochondrosis in Horses
- Physitis in Horses
- Flexural Deformities in Horses
PROFESSIONAL VERSION
Fragmentation of the apex of the patella usually occurs secondary to medial patellar desmotomy for management of upward fixation of the patella. Lesions are believed to develop due to patellar instability as a result of the surgery. The severity of lameness varies from mild stiffness to moderate lameness. A proximal limb flexion test usually exacerbates lameness, and femoropatellar joint effusion is usually present. Lameness is localized by diagnostic anesthesia of the femoropatellar joint, and diagnosis is confirmed by radiography. Arthroscopic debridement of the apex of the patella with removal of the osteochondral fragments is the treatment of choice. Prognosis is reasonable but depends on the severity of the condition.
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