How to assess a horse's conformation

Conformation is the horse's physical structure – how its bones, joints and muscles are put together. It affects how a horse moves, how easily it can do a job, and how much strain certain joints and tendons take over a working life. A University of Georgia extension bulletin sums up the five areas commonly assessed as balance, structural correctness, way of going, muscling, and breed or sex "type", with balance and structural correctness the most important (UGA Extension – Evaluating Horse Conformation).

No horse is perfect, and many horses with imperfect conformation stay sound and perform well. The aim isn't to find a flawless horse, but to understand what you're looking at and how it might affect the job you have in mind.

If you're new to the terms, start with points of the horse.

How to set up

• Stand the horse square on firm, level ground – front legs together, hind legs together, head in a natural position. How a horse stands changes what you see.
• Look from a few metres away first for the overall picture, then closer.
• View from the side (both sides), the front and behind.
• Then watch the horse move – walk and trot in a straight line towards and away from you, and from the side.

1. Balance and proportion

Balance means weight and mass are evenly distributed front to back and top to bottom. It comes from the skeleton – angles and lengths – rather than from how fat or fit the horse is.

Things to look for from the side

The UGA bulletin highlights several useful proportions (UGA Extension):

• Neck, shoulder, back and hip of roughly similar length.
• A topline shorter than the underline. The back (withers to loin) should be shorter than the belly line. A back that is long relative to the underline tends to be weaker and makes it harder for the horse to bring its hind legs under itself.
• Wither and hip height about level. Slightly "uphill" is fine. A horse markedly lower at the withers ("downhill") carries more weight on the front end. Young horses often grow unevenly and can look downhill for a while.
• Deep heart girth. Depth from withers to the floor of the chest should be about the same as from the chest floor to the ground.

Shoulder and neck

• Shoulder slope. A well-sloped shoulder – often described as around 45° – is associated with a longer, smoother stride. A steep, upright shoulder tends to give a shorter, choppier stride (UGA Extension).
• Neck shape. UGA suggests that the top of the neck (poll to withers) should be roughly twice the length of the underside (throat to chest). A neck that ties in high and has a clean throat makes it easier for the horse to flex.

Hindquarters

A longer, well-turned hip gives more power. UGA suggests the hip be about as long as the back, with a slope similar to the shoulder (UGA Extension).

Head

The head acts as a balancing weight when the horse moves, so it should be in proportion to the body. Large nostrils and wide-set eyes are generally desirable. Head shape matters less than balance and leg structure.

2. Structural correctness: the legs

Legs take enormous concussion. When they're not straight, stress is concentrated in particular parts of the joint or hoof, which can lead to lameness over time (UGA Extension). A useful technique is to imagine plumb lines dropped through the leg.

Front legs – from the front

An imaginary line from the point of the shoulder to the ground should split the forearm, knee, cannon, fetlock and hoof evenly. Common faults include:

• Base narrow – feet closer together than the chest. Tends to load the outside of the hoof.
• Base wide – feet wider apart than the chest. Tends to load the inside of the hoof.
• Toes in (pigeon-toed) – the foot usually swings outwards in flight ("paddling" or winging out).
• Toes out (splay-footed) – the foot tends to swing inwards ("winging in"), and the horse may knock the opposite leg.

UGA notes that a horse toeing out is generally the more concerning of the two because of the risk of interference.

Front legs – from the side

A line from the top of the shoulder blade should pass down the front of the leg and through the hoof. Faults include:

• Back at the knee (calf knees) – the knee sits behind the line, as if bending backwards. Generally considered the more serious of the two knee faults because of strain on the structures at the back of the knee (UGA Extension).
• Over at the knee (buck knees) – the knee sits in front of the line.
• Camped out / camped under – legs too far in front of, or behind, the vertical. Note that a horse may stand camped out because of foot pain, not conformation.

Hind legs – from behind

A line from the point of the buttock should pass through the middle of the hock, cannon and fetlock. It's normal for hind toes to point slightly outwards. Faults include:

• Cow hocks – hocks point towards each other.
• Bow legs – hocks point outwards.
• Base narrow or base wide behind.

Hind legs – from the side

A vertical line from the point of the buttock should touch the back of the hock and run down the back of the cannon to the fetlock. Faults include:

• Sickle hocks – too much angle at the hock, with the cannon sloping forward.
• Straight (post-legged) hind legs – too little angle.
• Camped out behind.

Pasterns and feet

The pastern acts as a shock absorber. UGA describes the ideal pastern angle as roughly matching the shoulder and about 45° to the ground, with the hoof angle matching the pastern (UGA Extension).

• Short, upright pasterns give more concussion.
• Long, sloping pasterns put more strain on tendons and ligaments.
• Club foot – a much steeper hoof angle than pastern angle.

Foot shape and balance can often be improved by good trimming. See hoof-pastern axis and foot balance and talk to your farrier.

3. Way of going

Conformation shows up in movement. Watch the horse walk and trot:

• Towards and away from you: do the legs travel straight, or swing in or out? Does the horse brush or knock its legs?
• From the side: is the stride long and even? Does the hind foot step well under the body?
• Is it even on both sides? Unevenness, or a head nod, may mean lameness rather than conformation – see horse movement and gaits.

4. Muscling

Muscle is shaped by breed, work and fitness. Look for smooth, even muscling over the topline, loin, hindquarters, forearm and gaskin. Poor topline is often about condition, saddle fit or work, and can improve – unlike bone structure.

5. Type and purpose

Different jobs suit different builds. A stock horse, a show pony and a dressage warmblood are bred for different things, and "good" conformation shifts slightly with purpose. Think about what you want the horse to do, and judge accordingly.

Conformation when buying

Conformation is one part of choosing a horse – temperament, training, soundness and suitability matter just as much. A pre-purchase veterinary examination assesses the horse's health and soundness on the day, but the University of Sydney points out it reflects the horse only at the time of examination and doesn't guarantee future soundness (University of Sydney – pre-purchase exams). Ask your vet how any conformation faults might affect your intended use. See buying a horse.

Identifying the points of the horse is part of the BHS Stage 1 syllabus, and Pony Club Australia's A Certificate asks candidates to describe how poor conformation and action affect soundness and usefulness (BHS Stage 1 Care; PCA Syllabus).

Want an expert eye? Find a trainer or coach near you on horse.work, or an equine vet for a pre-purchase exam.

FAQ

What is good conformation in a horse?

A balanced build with roughly equal wither and hip height, a back shorter than the underline, a well-sloped shoulder, and straight legs when viewed from the front, side and behind (UGA Extension). What's ideal also depends on the horse's job.

Which conformation faults are most serious?

Faults that concentrate stress on the legs tend to matter most for soundness. UGA describes back-at-the-knee (calf knees) as more problematic than over-at-the-knee, and toeing out as more concerning than toeing in because of interference (UGA Extension).

Can conformation be improved?

Bone structure can't change in an adult horse, but muscling and condition can, and good farriery can improve foot balance. Young horses also change shape as they grow.

Does a horse with poor conformation always go lame?

No. Many horses with faults stay sound and perform well. Faults increase certain risks, so consider the horse's intended work and get veterinary advice.

What's the difference between conformation and soundness?

Conformation is structure. Soundness is whether the horse is free from lameness or disease that affects its use. A vet assesses soundness; conformation is one factor that may influence it.