Common Equine Lameness, Injury, and Rehabilitation Concepts
This domain tests recognition and grading of lameness, common injury patterns, and safe progression through rehabilitation. Expect questions on the AAEP scale, diagnostic localization, and tissue-specific healing timelines.
Core rules
- The AAEP lameness scale runs 0–5: 0 is sound, 5 is non-weight-bearing. Grade at trot on a straight line and on a circle; use flexion tests and diagnostic blocks to localize, not to diagnose.
- Common conditions include navicular syndrome, suspensory desmitis, SDFT and DDFT injuries, hock osteoarthritis, osteochondrosis, and laminitis. Each has characteristic signs, but imaging and veterinary diagnosis are required.
- Rehabilitation phases are acute/inflammatory control, repair and remodeling, then reconditioning. Controlled exercise should be progressive and monitored; pain, swelling, or worsening gait means stepping back.
- Tendon and ligament healing is slow; re-injury risk remains high after return to work. Cross-training and surface control reduce load.
Worked example
A horse is 3/5 lame in the left forelimb, worse on a circle, with a positive flexion test of the distal limb but no obvious swelling. Reasoning: the response localizes pain but does not identify the tissue. Nerve blocks and imaging are needed. A rehabilitation plan should start with veterinary diagnosis, then controlled hand-walking, cryotherapy, and gradual reintroduction of exercise based on re-examination.
Traps
Grading lameness from a single stride; treating a positive block as a diagnosis; progressing rehab by calendar rather than by response; and missing bilateral lameness, which can look like a short stride rather than a head nod.