Lameness Evaluation in Horses: How Vets Find the Real Cause

A horse can look lame in one leg while the real pain starts somewhere else, which is why a proper lameness exam needs structure, patience, and clinical judgement.

By Dr Duncan Houston

Lameness is one of the most common reasons horses need veterinary assessment, but it is also one of the easiest problems to oversimplify. A horse may look “off” in front when the true problem is behind. A mild hindlimb lameness may only appear on a circle. A horse with pain in both front feet may not show an obvious head nod at all, because there is no comfortable limb to shift onto.

That is why equine lameness diagnosis is not just “watch the horse trot and pick a leg.” It is a step-by-step process of observation, palpation, gait assessment, stress testing, diagnostic nerve blocks, and targeted imaging.

The goal is not just to name the lame leg. The real goal is to find the painful structure, understand why it is painful, and build a treatment and rehabilitation plan that gives the horse the best chance of returning to comfort and work.

Quick Answer

A lameness evaluation in horses is a structured veterinary exam used to identify which limb is affected, where the pain is coming from, and what condition is causing it. It usually includes history, standing examination, walk and trot assessment, circles or ridden work when safe, hoof testers, flexion tests, diagnostic nerve or joint blocks, and imaging such as X-rays, ultrasound, MRI, CT, or bone scan when needed. Lameness is a clinical sign rather than a diagnosis, and pain is the most common cause, although mechanical and neurological problems can also alter gait. (MSD Veterinary Manual)

What Is Lameness in Horses?

Lameness means the horse is unable or unwilling to move normally. It may be caused by pain, mechanical restriction, neurological dysfunction, or altered weight-bearing.

In simple terms, lameness is the horse’s body saying: “Something hurts, feels unstable, or cannot move properly.”

Signs can include:

• Head bobbing at trot

• Shortened stride

• Toe dragging

• Hip hiking or pelvic asymmetry

• Reluctance to turn one way

• Reduced impulsion

• Stumbling

• Uneven contact under saddle

• Swapping canter leads

• Refusing jumps

• Difficulty with collection

• Pointing one foot at rest

• Heat, swelling, or pain in a limb

• Sudden unwillingness to work

MSD Veterinary Manual defines lameness as an abnormal stance or gait caused by structural or functional problems of the locomotor system, and notes that lameness is the most common cause of loss of use in horses. (MSD Veterinary Manual)

The important point is this: lameness is not the final answer. It is the sign that starts the investigation.

Why Lameness Diagnosis Can Be So Difficult

Some lameness cases are obvious. A horse that is suddenly non-weight-bearing on one front foot with a hot hoof and strong digital pulse may have a hoof abscess. A horse with a bowed tendon and swelling down the back of the cannon bone may have a superficial digital flexor tendon injury.

But many cases are not that generous. Horses are rude like that.

Lameness becomes harder when:

• The lameness is mild

• The horse is lame in more than one limb

• The problem only appears under saddle

• The horse is compensating for another painful limb

• Both front feet or both hind limbs hurt

• The horse is stiff rather than clearly lame

• The pain is high in the limb, back, pelvis, or neck

• The horse changes movement depending on surface or direction

• Imaging shows changes that may not actually be causing pain

This is where good veterinary lameness work becomes less about guessing and more about controlled clinical reasoning.

In practice, the hardest question is not always “is the horse lame?” It is often: which pain is the main pain?

Why a Horse Can Look Lame in the Wrong Leg

Compensatory lameness is one of the biggest traps in equine lameness diagnosis.

If one limb hurts, the horse changes the way it loads the rest of the body. That compensation can make another limb look abnormal, even if that second limb is not the original problem.

For example:

• A primary hindlimb lameness can create apparent forelimb asymmetry on the same side.

• A primary forelimb lameness can create pelvic movement changes behind.

• Multi-limb lameness can blur the pattern so the horse looks generally short, stiff, or uneven.

A University of Glasgow thesis studying objective lameness assessment found that improving hindlimb lameness with diagnostic anaesthesia significantly reduced head movement asymmetry associated with the ipsilateral forelimb. It also found that improving forelimb lameness could reduce pelvic movement asymmetry associated with the contralateral hindlimb. (Enlighten Theses)

That is why blocking one limb can sometimes make an apparent lameness in another limb disappear. It was not necessarily a second injury. It may have been the body compensating for the first one.

What Vets Look for Before the Horse Moves

A good lameness exam starts before the horse trots.

The standing exam can reveal clues before the active gait assessment begins.

A vet will often look at:

• Posture

• Weight shifting

• Whether one foot is pointed forward

• Hoof balance

• Shoe wear

• Muscle symmetry

• Joint swelling

• Tendon or ligament thickening

• Heat

• Pain on palpation

• Range of motion

• Back soreness

• Pelvic symmetry

• Scars from previous injuries

• Hoof cracks, rings, sole bruising, or frog changes

The University of Minnesota large animal surgery notes emphasise that the horse should be assessed visually for conformation, stance, symmetry, weight shifting, swelling, and atrophy before hands-on examination. They also note that palpation, joint range of motion, hoof structure, shoe wear, and hoof balance are assessed during the passive exam. (Publishing Services)

This matters because the horse’s movement only makes sense when you combine it with the physical exam.

A mildly lame horse with a swollen fetlock, reduced flexion, and pain on palpation is a different case from a mildly lame horse with no swelling but severe hoof tester pain.

Same limp. Different investigation.

How Vets Watch a Horse Move

Most lameness exams assess the horse at walk and trot. The trot is especially useful because it is a symmetrical two-beat gait, making weight-shifting abnormalities easier to see.

A lameness exam may include:

• Walk in a straight line

• Trot in a straight line

• Trot on firm ground

• Trot on soft ground

• Lunging left and right

• Circles of different sizes

• Inclines

• Transitions

• Canter assessment

• Ridden assessment if safe and relevant

• Specific movements related to the horse’s discipline

MSD notes that before diagnostic regional anaesthesia, the clinician should confirm the horse is consistently and sufficiently lame to make improvement recognisable, and that at minimum the horse should be trotted in a straight line on hard ground and lunged both ways on soft ground. (Merck Veterinary Manual)

The surface matters. A foot pain case may look worse on hard ground. A soft tissue issue may change more on a circle. A horse with bilateral lameness may look less obvious on the straight and more obvious when lunged, because the inside and outside limbs are loaded differently. The University of Minnesota notes that lunging can reveal lameness not clearly seen on the straight, especially in bilateral cases. (Publishing Services)

How Vets Grade Lameness

Many vets use the AAEP 0 to 5 lameness scale to describe severity and track change over time.

A simple version is:

Grade	What it means
0	Lameness is not visible
1	Difficult to see and not consistent
2	Visible under certain conditions, such as circles, hard ground, inclines, or under saddle
3	Consistently visible at trot
4	Visible at walk
5	Minimal or no weight-bearing

The University of Minnesota notes that many vets use the AAEP 5-point scale, with grade 5 representing non-weight-bearing lameness and grade 1 representing lameness seen only under certain conditions. (Publishing Services)

The grade matters because it gives everyone a shared language. It also helps assess response to flexion tests, nerve blocks, treatment, rest, rehabilitation, and rechecks.

A horse that improves from grade 3 to grade 1 after a nerve block has given the vet useful information. A horse that stays exactly the same after multiple blocks may need a different diagnostic approach.

What Head Bobbing and Hip Movement Mean

Forelimb and hindlimb lameness often look different.

Forelimb Lameness

With front limb lameness, people often notice a head bob. The classic phrase is “down on sound.” The horse tends to lift its head when the painful front limb hits the ground, reducing load on that limb, then drops the head when the sound limb lands.

Hindlimb Lameness

Hindlimb lameness is often harder to see. Instead of a clear head bob, vets look for pelvic movement, hip hike, shortened stride, reduced push-off, toe drag, or asymmetry when viewed from behind and from the side.

MSD notes that the most consistent signs are head nod for forelimb lameness and sacral or pelvic rise for hindlimb lameness, and that hindlimb lameness should be assessed from the side and behind. (MSD Veterinary Manual)

In real life, it is often messier than the textbook version. Some horses have subtle head movement from hindlimb compensation. Some have back stiffness. Some have bilateral limb pain and do not show an obvious “good side.”

That is why video, repeated assessment, and diagnostic blocks can be so valuable.

What Are Flexion Tests?

Flexion tests are stress tests. The vet holds part of the limb in flexion for a set period, then immediately watches the horse trot away to see whether lameness becomes worse.

They do not diagnose a condition by themselves. They help localise discomfort and decide what to investigate next.

Examples include:

• Distal limb flexion

• Carpal flexion

• Hock flexion

• Upper limb flexion

• Hoof wedge tests

• Specific joint or soft tissue stress tests

The University of Minnesota notes that distal limb flexion stresses the coffin, pastern, and fetlock joints, while hock flexion also flexes other structures because of the hindlimb reciprocal apparatus, making interpretation less specific. (Publishing Services)

A positive flexion test means the horse became more lame after the limb was stressed. It does not automatically mean “the hock is the problem” or “the fetlock is the problem.” It means that region deserves more attention.

This is a major owner misunderstanding. Flexion tests are clues, not final verdicts.

What Are Hoof Testers Used For?

Hoof testers apply controlled pressure to areas of the hoof to check for pain.

They can help identify:

• Hoof abscess

• Sole bruise

• Corn

• Laminitis pain

• Navicular or heel region pain

• Fracture suspicion

• Generalised foot soreness

The University of Minnesota notes that consistent withdrawal when hoof testers are applied can indicate pain, and that heel pain is often associated with navicular-type issues while pain in other regions may suggest hoof abscess, sole bruise, or laminitis. (Publishing Services)

Hoof testers are especially useful because many lameness problems start in the foot. In practice, a lot of “shoulder lameness” is actually foot pain wearing a convincing disguise.

What Are Diagnostic Nerve Blocks?

Diagnostic nerve blocks, also called diagnostic analgesia or regional anaesthesia, are one of the most important tools in equine lameness evaluation.

A local anaesthetic is injected around specific nerves or into specific joints or tendon sheaths. The horse is then reassessed. If the lameness improves, the vet has narrowed down where the pain is coming from.

The process is usually methodical:

1. Identify the lame limb.

2. Block a specific region.

3. Wait the correct amount of time.

4. Reassess the gait.

5. Decide whether the lameness improved.

6. Move to the next block if needed.

7. Image the region once the pain source is localised.

Horse Side Vet Guide describes nerve blocks as a process of elimination used to numb portions of the limb and identify the site of pain, with imaging then used to assess the structures in the localised region. (Horse Side Vet Guide)

Why Nerve Blocks Need Careful Interpretation

Nerve blocks are powerful, but they are not magic.

A block can mislead if:

• The horse is not consistently lame before the block

• The assessment is done too early

• The local anaesthetic spreads too far

• Too much volume is used

• The block affects a nearby joint or tendon sheath

• The horse has multiple painful areas

• The horse changes which limb it protects

• The horse warms out of the lameness with exercise

• The clinician blocks too high too early

Merck Veterinary Manual notes that diagnostic anaesthesia requires careful interpretation, because lesions can occasionally be found above the region typically desensitised by a nerve block. It also warns that precise needle placement, small effective volumes, and timely reassessment help reduce errors from unintended diffusion. (Merck Veterinary Manual)

Timing matters too. Merck notes that distal limb nerve blocks usually reduce pain within about 10 minutes if the blocked nerve supplies the painful region, while more proximal nerve blocks can take longer. It also warns that assessing too early can cause false-negative results, while local anaesthetic spread can cause false-positive interpretation. (Merck Veterinary Manual)

This is why a proper lameness workup can take time. The waiting is not wasted. It is part of the diagnosis.

Why Imaging Should Usually Come After Localisation

Owners often ask: “Why not just X-ray the whole leg?”

Because imaging only helps when you know where to look.

A horse’s limb is large. A single radiograph does not show every bone, every joint, every tendon, every ligament, and every foot structure. Even if you image a broad region, you may find changes that are old, incidental, or unrelated to the current pain.

The best sequence is usually:

1. Clinical exam

2. Localise the limb

3. Localise the region

4. Use imaging to identify the structure and condition

The University of Minnesota notes that most lameness exams end with diagnostic imaging, and that localisation helps reduce the region that needs imaging. It also notes that ultrasound is key for soft tissue lesions, while radiographs or CT are more useful for bony lesions, and that MRI is very useful for the foot. (Publishing Services)

That last point is important. Imaging finds abnormalities. The lameness exam helps decide which abnormalities matter.

Which Imaging Tests Are Used for Lameness?

Different imaging tools answer different questions.

X-Rays

Best for bone and joints.

Useful for:

• Arthritis

• Fractures

• Bone chips

• Ringbone

• Pedal bone rotation

• Navicular bone changes

• Joint alignment

• Some developmental bone problems

Ultrasound

Best for soft tissue.

Useful for:

• Tendon injuries

• Ligament injuries

• Suspensory problems

• Joint capsule changes

• Tendon sheath issues

• Some wounds and fluid pockets

MRI

Excellent for the foot and complex lower limb cases.

Useful for:

• Deep digital flexor tendon injuries inside the hoof

• Navicular bursa issues

• Coffin joint region pain

• Bone bruising

• Ligament injuries not visible on X-ray

• Cases where blocks localise pain but X-rays are unrewarding

CT

Best for detailed bone imaging, especially where available.

Useful for:

• Complex fractures

• Foot and skull imaging

• Surgical planning

• Detailed joint or bone assessment

Bone Scan

Also called scintigraphy.

Useful when:

• Multiple limbs may be involved

• The horse cannot be blocked effectively

• The pain source is unclear

• High limb, pelvis, back, or multiple regions are suspected

• A performance horse has vague or shifting lameness

The University of Minnesota notes that scintigraphy can be more effective when multiple limbs are lame, when a horse will not tolerate local blocks, or when the examination is pre-performance. (Publishing Services)

What About Objective Gait Technology?

Objective gait systems can be very helpful, especially for subtle lameness, multi-limb cases, rechecks, and situations where the human eye may disagree.

These systems may include:

• Inertial sensors

• Video analysis

• Force plates

• Motion analysis

• Limb-mounted sensors

• Pelvic and head movement tracking

Merck notes that wireless inertial sensor-based systems or video analysis can help clarify diagnostic analgesia results in subtly lame horses. (Merck Veterinary Manual)

Objective tools are not a replacement for a vet. They are a support tool.

The University of Minnesota notes that gait analysis and lameness locator-style devices can make exams more objective, but they are not infallible and can sometimes provide overwhelming information. (Publishing Services)

That is the balanced view. Technology is useful, but interpretation still matters. A sensor may show asymmetry. A vet still needs to decide whether that asymmetry is primary pain, compensation, rider effect, surface effect, conformation, fatigue, or another clinical pattern.

What About Thermography and Blood Markers?

Thermography can sometimes identify areas of altered heat, but it does not diagnose most lameness causes by itself. Heat can come from inflammation, altered loading, recent exercise, bandaging, sunlight, clipping, or environmental effects.

Blood markers are an area of research interest for musculoskeletal stress and inflammation, but they are not a routine first-line method for localising most everyday lameness cases.

The practical version:

• Use thermography as an adjunct, not the answer.

• Use blood tests when systemic disease, muscle disease, infection, inflammation, or metabolic concerns are part of the picture.

• Do not skip the physical exam, gait exam, diagnostic blocks, and appropriate imaging.

In other words, tools are helpful. Clinical reasoning is still the engine.

How Worried Should You Be About Lameness?

Lameness can range from mild and manageable to urgent and limb-threatening.

Low Concern

This is more likely when:

• Lameness is very mild

• The horse is comfortable at walk

• There is no swelling, heat, wound, or digital pulse concern

• The horse improves quickly with rest

• The issue only appears under specific work conditions

• The horse is otherwise bright and eating

Action: reduce work, monitor closely, check feet and limbs, and arrange a vet assessment if it persists beyond a few days, worsens, or affects performance.

Moderate Concern

This is more likely when:

• Lameness is clearly visible at trot

• It appears repeatedly under saddle

• There is mild swelling or heat

• The horse resents flexion or palpation

• The gait changes on a circle

• The horse has reduced performance

• The horse has a history of previous injury

Action: stop ridden work and book a veterinary lameness exam. Continuing work can turn a manageable problem into a longer rehabilitation case.

High Concern

This is more likely when:

• Lameness is visible at walk

• The horse is reluctant to bear weight

• There is obvious swelling

• There is a wound near a joint or tendon sheath

• There is a strong digital pulse

• The hoof is hot

• The horse has sudden severe lameness

• The horse recently fell, slipped, kicked a wall, or was kicked

• The horse is worsening over hours

Action: call your vet urgently.

Critical Concern

Treat this as an emergency if:

• The horse is non-weight-bearing

• A fracture is possible

• There is a penetrating wound

• A nail or sharp object is in the foot

• There is severe swelling around a joint or tendon sheath

• The horse cannot walk safely

• The limb looks unstable

• There is severe pain after trauma

• The horse is systemically unwell

• There are neurological signs such as weakness, collapse, or severe incoordination

The University of Minnesota specifically warns not to trot a horse if fracture is a concern, because incomplete fractures can become complete fractures. (Publishing Services)

When Is Lameness an Emergency?

Call a vet urgently if your horse has:

• Sudden severe lameness

• Non-weight-bearing lameness

• Lameness after a fall, kick, or collision

• A nail, screw, wire, or penetrating object in the foot

• A wound near a joint, tendon sheath, or deep structure

• Marked swelling

• Severe heat or pain in the limb

• A strong digital pulse with foot pain

• Suspected laminitis

• Fever or depression with lameness

• Neurological signs

• Rapid worsening over a few hours

• Lameness visible at walk

A simple rule: if the horse is too lame to safely trot, do not trot it just to “see how bad it is.”

That is how small disasters get promoted to senior management.

What Conditions Can Cause Lameness?

Lameness can come from almost anywhere in the musculoskeletal or nervous system.

Common causes include:

Foot Problems

• Hoof abscess

• Sole bruise

• Corns

• Laminitis

• Navicular region pain

• Coffin joint pain

• White line disease

• Puncture wounds

• Thin soles

• Poor hoof balance

Joint Problems

• Osteoarthritis

• Synovitis

• Capsulitis

• Bone chips

• OCD lesions

• Ringbone

• Hock arthritis

• Fetlock pain

• Coffin joint disease

Tendon and Ligament Injuries

• Superficial digital flexor tendon injury

• Deep digital flexor tendon injury

• Suspensory ligament injury

• Check ligament injury

• Collateral ligament injury

• Tendon sheath inflammation

Bone Injuries

• Stress fracture

• Splints

• Pedal bone fracture

• Sesamoid injury

• Pelvic fracture

• Bone bruising

• Subchondral bone pain

Muscle, Back, and Pelvic Problems

• Sacroiliac pain

• Back pain

• Muscle strain

• Poor saddle fit

• Rider-related asymmetry

• Pelvic injury

• Poor core strength or conditioning

Neurological or Mechanical Causes

• Stringhalt

• Upward fixation of the patella

• Fibrotic myopathy

• Cervical spinal cord disease

• Ataxia

• Nerve injury

MSD notes that lameness may be caused by trauma, congenital or acquired disorders, infection, metabolic disorders, neurological deficits, or circulatory disease, and that mechanical lameness does not respond to analgesics in the same way pain-related lameness often does. (MSD Veterinary Manual)

What To Do Before the Vet Arrives

If your horse is lame, do this:

1. Stop ridden work.

2. Move the horse calmly to a safe area.

3. Check the foot for stones, nails, loose shoes, heat, and digital pulse.

4. Look for wounds, swelling, heat, or obvious asymmetry.

5. Note when it started and whether it was sudden or gradual.

6. Record a short video at walk if safe.

7. Do not force the horse to trot if lameness is severe.

8. Do not give medication before speaking with your vet if a lameness exam is planned, unless pain relief is urgently needed.

9. Keep the horse confined if fracture, tendon injury, or severe pain is possible.

10. Call your vet if the lameness is severe, worsening, or unclear.

Videos can help, but safety comes first. A useful video is not worth a fractured horse, a flattened owner, or a cinematic disaster featuring a lead rope and regret.

What To Expect During a Lameness Exam

A typical lameness evaluation may include:

1. History

Your vet will ask:

• When did it start?

• Was it sudden or gradual?

• Did anything happen during work or turnout?

• Is it better or worse on certain surfaces?

• Is it worse one direction?

• Is it present under saddle?

• Has the horse had previous injuries?

• What discipline and workload does the horse do?

• What shoeing or trimming changes have occurred?

• Has medication been given?

2. Standing Examination

The vet checks posture, conformation, hoof balance, swelling, heat, pain, range of motion, muscle symmetry, back, pelvis, and limb structures.

3. Movement Examination

The horse is assessed in hand, usually at walk and trot, then possibly on circles, different surfaces, or under saddle if safe.

4. Hoof Testers and Flexion Tests

These help identify pain patterns and decide where to focus.

5. Diagnostic Blocks

Nerve or joint blocks are used to localise the source of pain.

6. Imaging

Once the pain region is narrowed, imaging is chosen based on the suspected structure.

7. Treatment Plan

The plan may include rest, shoeing changes, anti-inflammatories, joint medication, biologics, surgery, rehabilitation, physiotherapy, conditioning changes, or further diagnostics.

Horse Side Vet Guide describes the lameness exam as a multi-step methodical veterinary exam that combines history, standing exam, movement assessment, flexion and hoof tester exams, diagnostic anaesthesia, and imaging to reach a diagnosis, treatment plan, and prognosis. (Horse Side Vet Guide)

How Treatment Depends on the Cause

Lameness treatment is not one-size-fits-all.

A hoof abscess needs drainage and protection.

A suspensory injury needs controlled rehabilitation and monitoring.

A joint inflammation case may need rest, anti-inflammatory treatment, joint therapy, and workload modification.

A stress fracture may need strict rest and careful imaging.

A saddle fit or rider asymmetry problem may need a very different plan again.

Common treatment pathways include:

• Rest

• Controlled exercise

• Corrective trimming or shoeing

• NSAIDs

• Ice or cold hosing in selected acute injuries

• Bandaging

• Joint medication

• PRP or other biologic therapies

• Shockwave therapy in selected cases

• Physiotherapy

• Rehabilitation programs

• Conditioning changes

• Saddle fit correction

• Surgery in selected cases

• Referral for advanced imaging

The danger is treating the symptom without finding the structure. A horse that feels better on pain relief may still have an injury that needs rest.

Common Mistakes Owners Make

1. Working the Horse “To See If It Warms Out of It”

Some lameness improves during exercise. That does not always mean it is safe. It may simply mean the horse is compensating better once warm.

2. Giving Pain Relief Before the Exam

Sometimes pain relief is necessary, especially in severe pain. But if the horse is safe and the lameness exam is planned, medication can mask the signs your vet needs to interpret.

3. Assuming It Is the Shoulder

Many front limb lameness cases blamed on the shoulder are actually foot pain, lower limb pain, or compensatory movement.

4. Skipping the Farrier Discussion

Hoof balance, shoeing, sole depth, breakover, and heel support can all influence lameness.

5. Imaging Too Broadly Too Early

Random imaging can find random changes. Localisation first usually gives better answers.

6. Ignoring Subtle Performance Changes

A horse does not need to be obviously lame to have a problem. Reduced impulsion, canter issues, resistance, shortened stride, or reluctance to bend can be early signs.

How To Reduce Lameness Risk

Not all lameness can be prevented, but risk can be reduced with good management.

Focus on:

• Regular farrier care

• Balanced trimming and shoeing

• Gradual fitness changes

• Avoiding sudden workload increases

• Appropriate surfaces

• Proper warm-up and cool-down

• Regular saddle fit checks

• Weight management

• Early attention to small gait changes

• Good footing in turnout and arenas

• Appropriate conditioning for the horse’s discipline

• Rest days and recovery periods

• Managing metabolic disease and laminitis risk

• Treating hoof cracks, thrush, and white line problems early

The best prevention is not bubble-wrapping the horse. It is noticing small changes before they become expensive changes.

FAQs About Lameness Evaluation in Horses

Can I tell which leg my horse is lame on myself?

Sometimes, especially if the lameness is obvious. But mild, hindlimb, compensatory, and multi-limb lameness can be difficult even for experienced horse people. If the horse is repeatedly uneven, worsening, or not performing normally, a veterinary lameness exam is the safer option.

Should I rest my horse before calling the vet?

If the lameness is mild and the horse is comfortable at walk, short-term rest and monitoring may be reasonable. If the lameness is severe, sudden, worsening, visible at walk, or associated with swelling, heat, wounds, or foot pain, call your vet.

Are nerve blocks painful for horses?

Most horses tolerate nerve blocks well with appropriate handling and technique. They are injections, so there can be mild discomfort, but they provide valuable information and may temporarily relieve pain in the blocked area.

Why does my horse only look lame on a circle?

Circles load the limbs differently and can reveal subtle pain that is not obvious on a straight line. Some joint, soft tissue, foot, and bilateral lameness cases become clearer when the horse is lunged in both directions.

Why did the lameness move to another leg after a nerve block?

That can happen when the horse has pain in more than one limb or when one lameness was masking another. Once the primary painful area is numbed, the horse may reveal a second, milder lameness.

The Bottom Line

Lameness evaluation in horses is not about guessing the sore leg from one trot-up. It is about building a clinical map.

A good lameness exam asks:

• Is the horse truly lame?

• Which limb or limbs are involved?

• Is the pattern primary or compensatory?

• Is the pain in the foot, joint, tendon, ligament, bone, back, pelvis, or nervous system?

• Does diagnostic analgesia improve it?

• Which imaging test will answer the next question?

• What treatment gives this horse the best chance of returning to comfort and work?

The real skill is not just seeing the limp. It is understanding what the limp is trying to hide.

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If your horse is lame and you are unsure whether it is mild, urgent, or something that needs a full workup, ASK A VET™ can help you organise the signs, review what has changed, and decide when hands-on veterinary assessment is needed.