Can Hind Hoof Balance Change a Horse’s Posture?

A horse that stands under itself behind may be showing more than a simple trimming problem.

By Dr Duncan Houston

Hind feet are easy to underestimate. Owners often focus on the front feet because that is where many obvious lameness problems appear, but the hind hooves play a major role in posture, propulsion, engagement, back comfort, and how the horse loads the rest of the body.

When the hind toes become long and the heels run low, some horses develop a broken back hoof pastern axis or a negative plantar angle. Externally, this may look like the horse is standing with the hind limbs tucked too far under the body. Internally, the coffin bone may be sitting at an abnormal angle within the hoof.

The important point is not that every sore back, tight jaw, or training issue is caused by the hind feet. That would be too simple, and horses enjoy being clinically inconvenient. The real point is that hind hoof balance can influence posture, and posture can influence how force travels through the limbs, pelvis, back, neck, and whole body.

Quick Answer

Yes, hind hoof balance can affect a horse’s posture, especially when the hind feet have long toes, low heels, a broken back hoof pastern axis, or a negative plantar angle. A 2022 pilot study of 12 horses found that all horses with negative plantar angles showed a canted in hind limb posture, and farriery intervention significantly changed hind limb orientation in 7 of those horses. This does not prove that hind hoof imbalance causes every back, pelvic, neck, or jaw problem, but it strongly supports using a vet and farrier team, radiographs where needed, and careful correction rather than guessing from the outside of the hoof alone. (MDPI)

What Is Hind Hoof Balance?

Hind hoof balance means the hoof is trimmed, supported, and loaded in a way that suits the horse’s limb, internal hoof structures, conformation, workload, and movement pattern.

Good hind hoof balance usually considers:

• Toe length

• Heel height

• Heel support

• Hoof pastern axis

• Medial to lateral balance

• Breakover

• Sole depth

• Frog and caudal hoof support

• Position of the coffin bone inside the hoof

• How the hoof lands and loads during movement

MSD Veterinary Manual describes hoof imbalance as a problem that can occur in the sagittal plane, meaning front to back, or the medial to lateral plane, meaning side to side. It also notes that hoof imbalance can affect both front feet and hind feet and may result in poor performance or lameness. (MSD Veterinary Manual)

In plain English: hoof balance is not just about making the outside of the foot look neat. It is about how the hoof lines up with the bones and how the limb loads with every step.

What Is a Negative Plantar Angle?

A negative plantar angle means the bottom surface of the coffin bone in the hind foot slopes the wrong way relative to the ground. In a negative plantar angle, the back of the coffin bone sits lower than it should compared with the front.

This is usually associated with a long toe, low heel hind foot.

MSD Veterinary Manual notes that a broken back hoof can show a long toed or low heeled conformation, and many horses with this pattern have a negative palmar or plantar angle on radiographs. (MSD Veterinary Manual)

The Sharp and Tabor study describes negative plantar angle as a radiographic feature where the solar or plantar margin of the third phalanx, also called P3 or the coffin bone, has a negative angle in relation to the ground surface. The same paper describes negative plantar angle as an extreme presentation of long toe, low heel hind hoof conformation. (MDPI)

That last point matters: you cannot accurately confirm a negative plantar angle just by looking at the hoof from the outside. You can suspect it, but radiographs are how you assess the internal angle.

Why Hind Hooves Affect Posture

The hind feet are part of the horse’s support and propulsion system. They influence how the horse stands, pushes forward, engages the hind end, supports the pelvis, and moves through the back.

If the hind foot becomes too long in the toe and too low in the heel, the horse may change posture to reduce discomfort or improve stability. One common pattern is standing under behind, where the hind limbs are brought further forward under the body.

Sharp and Tabor described this as a canted in posture, where the limbs are brought closer together under the trunk, creating a non vertical metatarsal or tarsal alignment. Their pilot study found that all 12 horses with negative plantar angles had this abnormal compensatory posture. (MDPI)

Clinically, this is important because posture changes can alter loading through:

• Hind hooves

• Fetlocks

• Hocks

• Stifles

• Suspensory apparatus

• Pelvis

• Sacroiliac region

• Lumbar spine

• Thoracolumbar back

• Neck and poll

That does not mean the hind foot is always the original cause. It means the hind foot can be part of the compensation loop.

What Did the Hind Hoof Posture Study Find?

The key study often discussed in this area is the 2022 paper by Yogi Sharp and Gillian Tabor, An Investigation into the Effects of Changing Dorso Plantar Hoof Balance on Equine Hind Limb Posture.

The study looked at 12 horses with negative plantar angles. The researchers photographed and documented hind limb posture before and after farriery intervention designed to create positive plantar angles and improve hoof proportions around the centre of rotation of the distal interphalangeal joint. (MDPI)

The main findings were:

• All 12 horses with negative plantar angles had canted in hind limb posture.

• Farriery intervention had a significant effect on hind limb orientation in 7 horses.

• Mean metatarsal angles changed after intervention.

• The findings supported the idea that hind hoof balance can influence equine stance and limb posture. (MDPI)

The study is useful, but it should not be exaggerated.

It was a small pilot study. The authors themselves noted limitations, including the small number of cases, field conditions, lack of post intervention radiographs, and the need for larger, more controlled future research. (MDPI)

So the honest veterinary interpretation is:

Hind hoof balance can influence posture, but we should not turn one pilot study into a universal cure for every performance, back, pelvis, neck, or jaw problem.

What Does “Standing Under Behind” Mean?

Standing under behind means the horse places the hind feet too far forward under the body rather than standing with the hind cannons more vertically aligned.

You may notice:

• Hind feet parked forward under the belly

• Hind limbs appearing tucked under the body

• Hocks carried closer together or angled inward

• A camped under look behind

• Shorter hind stride

• Reduced push from behind

• Difficulty standing square

• The horse repeatedly resting or shifting hind limbs

• A posture that looks “braced” rather than relaxed

Sharp and Tabor described this canted in posture as an abnormal compensatory posture and linked it with negative plantar angles in the horses studied. (MDPI)

In practice, standing under behind can be caused by multiple things, not just hoof balance. It can reflect hind foot pain, hock pain, stifle pain, sacroiliac pain, back pain, neurological weakness, poor conformation, fatigue, or learned posture.

That is why posture should start an investigation, not end it.

How Hoof Balance Can Affect the Kinetic Chain

The “kinetic chain” simply means that one part of the body affects another.

If the hind hoof changes how the horse loads the limb, the effect can travel upward. The horse may alter fetlock, hock, stifle, pelvic, or back posture to stay comfortable or stable.

University of Minnesota Extension explains that balanced hooves help horses move better and reduce stress and strain on bones, tendons, and ligaments. It also notes that long toes and collapsed heels strain the flexor tendons and navicular bone, while imbalanced hooves can stress supporting ligaments and joints. (University of Minnesota Extension)

That is not mystical. It is mechanics.

A long toe changes breakover.

A low heel changes caudal hoof loading.

A broken back hoof pastern axis changes how force passes through the digit.

The horse then compensates higher up.

The body is basically one long group project, and the hoof is the team member everyone forgets until the presentation collapses.

Signs Your Horse May Have Hind Hoof Imbalance

Possible signs include:

• Long hind toes

• Low or crushed heels

• Bull nosed appearance to the hind hoof

• Broken back hoof pastern axis

• Hind limbs standing too far under the body

• Difficulty standing square

• Reduced hind end engagement

• Dragging hind toes

• Shortened hind stride

• Poor impulsion

• Trouble backing up

• Difficulty with collection

• Resistance in transitions

• Reluctance to go forward

• Back, gluteal, or sacroiliac soreness

• Recurrent hind limb lameness

• Uneven shoe wear

• Frequent loss of hind shoes

• Performance decline

MSD Veterinary Manual notes that physical examination of the foot and dynamic examination with the horse walking in hand can help identify hoof imbalances, but radiography can aid evaluation because internal alignment matters. (MSD Veterinary Manual)

So yes, owners can spot warning signs. But a reliable diagnosis needs a proper vet and farrier assessment.

Can Hind Hoof Imbalance Cause Back, Neck, or Jaw Pain?

It can contribute to whole body compensation, but this needs careful wording.

Hind hoof imbalance may contribute to:

• Hind limb strain

• Altered pelvic loading

• Sacroiliac region discomfort

• Back muscle tension

• Reduced engagement

• Compensatory neck posture

• Performance resistance

The Sharp and Tabor paper suggested that the relationship between negative plantar angle, hind limb pathology, posture, and trunk pathology could be more extensive than current research shows, but it also clearly stated that more research is needed to establish causation. (MDPI)

That means we should not say, “Your horse is grinding the bit because the hind heels are low.”

A better clinical statement is:

If a horse has hind hoof imbalance and also has back, pelvic, neck, jaw, or performance issues, the hind feet should be assessed as part of the whole horse workup.

That is strong, accurate, and much safer than turning the hoof into a magical explanation for everything north of the fetlock.

How Worried Should You Be?

Low Concern

This is more likely when:

• The horse is sound.

• The hind feet are only mildly long.

• The horse stands square most of the time.

• There is no back pain, lameness, or performance issue.

• The horse is on a regular farrier cycle.

• Hoof pastern axis looks generally aligned.

Action: keep the farrier schedule consistent, monitor posture, and reassess if the horse starts standing under behind or losing performance.

Moderate Concern

This is more likely when:

• The hind toes are noticeably long.

• The heels look low or crushed.

• The horse often stands under behind.

• Performance has dropped.

• The horse struggles with engagement or backing up.

• There is mild back, gluteal, or hock region soreness.

• The shoeing or trimming cycle is drifting too long.

Action: book a farrier and vet assessment. Radiographs may be useful before making significant changes.

High Concern

This is more likely when:

• The horse is lame.

• There is marked hind hoof distortion.

• The horse has a broken back hoof pastern axis.

• The horse has suspected negative plantar angles.

• There is recurrent hind limb pain.

• The horse has sacroiliac, suspensory, hock, or stifle concerns.

• The horse becomes resistant, unsafe, or unable to perform normal work.

Action: stop pushing the horse in work and arrange a full lameness, hoof, and farrier assessment.

Critical Concern

Hind hoof imbalance itself is rarely a sudden emergency, but the signs around it can be urgent.

Treat it as urgent if:

• The horse is severely lame.

• The horse is non weight bearing.

• There is sudden swelling.

• There is a wound near a joint or tendon sheath.

• There is severe back or pelvic pain after trauma.

• There are neurological signs.

• The horse cannot walk normally.

• A fracture, tendon injury, joint infection, laminitis, or hoof abscess is possible.

Action: call your vet immediately.

When Is This an Emergency?

Call your vet urgently if your horse has:

• Sudden severe lameness

• Non weight bearing lameness

• Rapid swelling

• A hot, painful foot

• Strong digital pulses

• Sudden inability to back up or turn normally

• Severe back or pelvic pain

• Neurological signs such as weakness, stumbling, dragging, or ataxia

• A wound near a joint, tendon sheath, or hoof

• Fever, depression, or reduced appetite

• Lameness that worsens over hours

A horse with chronic hind hoof imbalance may need planned correction. A horse with acute severe lameness needs veterinary assessment first.

Do not blame the trim if the horse actually has a hoof abscess, laminitis, fracture, tendon injury, or neurological disease. That is how expensive mistakes get invited to the party.

How Do Vets and Farriers Diagnose Hind Hoof Imbalance?

A proper assessment may include:

• Watching the horse stand naturally

• Looking at whether the hind limbs stand under the body

• Assessing hoof pastern axis

• Checking toe length and heel height

• Assessing medial to lateral balance

• Looking at breakover

• Comparing both hind feet

• Palpating the back, pelvis, and hind limbs

• Watching the horse walk and trot

• Assessing performance concerns under saddle if safe

• Reviewing farrier history

• Taking hoof radiographs

• Discussing a correction plan with the farrier

MSD Veterinary Manual notes that radiography can help evaluate hoof imbalance and that lateromedial and dorsopalmar or dorsoplantar views may be used, but it also warns that horse stance and uneven weight bearing can affect radiographic interpretation. (MSD Veterinary Manual)

This is why good positioning matters. If the horse is not standing correctly for the X-ray, the measurement can mislead everyone.

Why Radiographs Matter

Radiographs help show what the outside of the hoof cannot.

They can assess:

• Plantar angle

• Coffin bone position

• Sole depth

• Hoof wall thickness

• Hoof pastern alignment

• Breakover relationship

• Heel support

• Distal phalanx changes

• Signs of laminitis or rotation

• Navicular region changes

• Joint alignment

MSD Veterinary Manual notes that many broken back horses have a negative palmar or plantar angle on radiographs, and that radiography can aid evaluation of hoof imbalance. It also cautions that drastic changes in trimming or shoeing can induce lameness in horses without lameness, especially when imbalance is partly conformational. (MSD Veterinary Manual)

That last sentence is gold.

Not every imperfect hoof needs aggressive correction. Some horses need careful, gradual change. Some need shoeing support. Some need pain investigated first. Some need the farrier, vet, bodyworker, rider, and trainer to stop working in separate universes and talk to each other.

How Is Negative Plantar Angle Corrected?

Correction depends on the horse, the radiographs, the amount of distortion, the degree of lameness, the hoof capsule, the workload, and whether other injuries are present.

Possible approaches include:

• Shortening an excessive toe

• Improving breakover

• Supporting the heel

• Avoiding further heel collapse

• Corrective trimming

• Therapeutic shoeing

• Wedge pads in selected cases

• Heel elevation in selected cases

• Pads or pour in support

• Bar shoes or other support packages where appropriate

• Shorter farrier cycles

• Repeat radiographs

• Controlled exercise adjustment

• Treating concurrent lameness

The Sharp and Tabor study used farriery prosthetics to create positive plantar angles and improve hoof proportions around the centre of rotation of the distal interphalangeal joint, and this altered hind limb orientation in some horses. (MDPI)

But correction should not be random.

A wedge pad is not automatically the answer.

A huge trim is not automatically the answer.

Heel elevation is not automatically the answer.

The right answer is the one that fits the horse’s internal anatomy, pain pattern, hoof capsule, and movement.

Why You Should Not Correct It Too Aggressively

It is tempting to see a long toe and low heel and want to “fix it today.”

That can backfire.

MSD Veterinary Manual cautions that not all hoof imbalances require treatment and that drastic trimming or shoeing changes in horses without lameness can potentially induce lameness. (MSD Veterinary Manual)

In practice, the risk of aggressive correction is higher when:

• The horse is older.

• The hoof capsule has been distorted for a long time.

• The heels are weak.

• Sole depth is limited.

• There is active lameness.

• There is tendon or suspensory pain.

• The horse has thin soles.

• The horse is in heavy work.

• The internal angles are unknown.

• The farrier is correcting from photos rather than radiographs.

Hooves adapt over time. The rest of the body adapts too. If you change the bottom suddenly, the top may object.

What Else Can Look Like a Hind Hoof Balance Problem?

A horse standing under behind or resisting work does not automatically have negative plantar angles.

Important rule outs include:

Hock Pain

Hock arthritis or inflammation can make the horse reluctant to push, collect, or stand square.

Stifle Pain

Stifle problems can alter hind limb posture, impulsion, transitions, and canter quality.

Proximal Suspensory Desmitis

This can cause subtle hind limb lameness, poor performance, and difficulty engaging.

Sacroiliac Region Pain

Sacroiliac pain can cause poor hind end power, back soreness, reluctance to canter, and reduced performance.

Back Pain or Kissing Spines

Back pain can change how the horse stands, moves, and uses the hind limbs.

Neurological Disease

Weakness, ataxia, toe dragging, or abnormal limb placement may reflect neurological disease rather than hoof imbalance.

Laminitis

Laminitis can affect posture and hoof capsule alignment and needs urgent veterinary care.

Hoof Abscess

A hoof abscess can cause sudden lameness and altered stance.

Poor Saddle Fit or Rider Influence

A horse may change posture because of pain under saddle or repeated compensatory movement.

Conditioning and Training Issues

A weak horse may struggle to engage behind even if the feet are not the primary problem.

This is why the best approach is not “trim the hind feet and hope.” It is to assess the whole horse.

What Should You Do If Your Horse Stands Under Behind?

1. Take Photos and Videos

Take clear side photos of both hind feet and a video of your horse standing naturally, walking, and trotting on a straight line. Do not force the horse into a square stance if you are trying to capture the posture they choose themselves.

2. Check the Farrier Cycle

If the horse is overdue, start there. University of Minnesota Extension recommends trimming or shoeing at least every 6 to 8 weeks in summer, while winter intervals may range from 6 to 12 weeks depending on hoof growth. Show horses or horses with specific hoof problems may need more frequent care. (University of Minnesota Extension)

3. Look for Red Flags

Check for:

• Lameness

• Heat

• Digital pulse changes

• Swelling

• Back pain

• Reluctance to move

• Toe dragging

• Sudden posture change

• Trouble turning or backing

4. Book a Vet and Farrier Review

If the posture is persistent, performance is affected, or there is pain, involve both your vet and farrier.

5. Consider Radiographs

If negative plantar angle is suspected, radiographs help guide the plan instead of relying on external appearance.

6. Make Changes Gradually

Unless there is an urgent medical reason, hoof balance correction is usually planned over time.

7. Reassess the Whole Horse

If posture improves but pain remains, keep investigating. The hind feet may have been part of the problem, not the whole problem.

Common Mistakes Owners Make

Focusing Only on the Front Feet

Front feet matter, but hind hoof imbalance can affect posture, propulsion, and performance.

Assuming Standing Under Behind Is Just Laziness

A horse that consistently stands under behind may be compensating for discomfort, hoof imbalance, weakness, or pain elsewhere.

Correcting Without Radiographs

External hoof shape gives clues, but radiographs show the internal angle and sole depth.

Using Wedges Without a Plan

Wedges can help some horses and harm others. They should be used for a reason, not because the hoof “looks low.”

Letting Farrier Cycles Drift Too Long

Hoof growth between cycles can change mechanics. The Sharp and Tabor paper notes that some studies suggest hoof growth between trim or shoeing cycles can create enough morphological and mechanical change to contribute to negative palmar or plantar angle development. (MDPI)

Blaming Every Back or Jaw Issue on the Feet

The body is connected, but not every problem begins in the hoof. Rule out lameness, saddle fit, back pain, dental disease, neurological problems, and training factors.

Changing Too Much Too Fast

Drastic hoof changes can create new soreness, especially in horses adapted to long term imbalance. MSD specifically warns that drastic changes in trimming or shoeing can induce lameness in some horses. (MSD Veterinary Manual)

How Can Hind Hoof Imbalance Be Prevented?

Prevention is not about creating identical textbook feet. It is about keeping each horse functionally balanced.

Practical prevention includes:

• Regular farrier care

• Shorter cycles for horses that grow toe quickly

• Monitoring hind hoof angle and heel support

• Watching for long toe, low heel changes

• Checking hoof pastern axis

• Taking photos over time

• Using radiographs when distortion is significant

• Managing body weight

• Building strength gradually

• Avoiding sudden workload increases

• Treating hind limb lameness early

• Checking saddle fit

• Keeping footing appropriate

• Using a vet and farrier team for recurring problems

University of Minnesota Extension lists regular trimming or shoeing, maintaining hoof balance, appropriate shoeing for footing and weather, treatment when disease occurs, and proper nutrition as key parts of reducing hoof problems. (University of Minnesota Extension)

The best prevention is consistency. Hooves rarely go dramatically wrong overnight. They usually drift there trim by trim, cycle by cycle, while everyone is busy looking at something else.

Myth vs Reality

Myth	Reality
Hind feet do not matter as much as front feet.	Hind hoof balance affects posture, propulsion, engagement, and loading through the body.
You can diagnose negative plantar angle from the outside.	External signs can raise suspicion, but radiographs assess the internal coffin bone angle.
Wedge pads fix every low heel hind foot.	Wedges may help selected horses, but correction must match the horse’s anatomy and pain pattern.
Standing under behind is always a training issue.	It may reflect hoof imbalance, pain, weakness, lameness, or compensation.
Correcting the hind feet will fix the whole horse.	Hoof balance can be part of the solution, but back, pelvic, limb, saddle, dental, and neurological causes may also need assessment.
Big correction is better correction.	Gradual, measured correction is often safer than aggressive change.

FAQs About Hind Hoof Balance and Posture in Horses

Can long hind toes make a horse stand under behind?

Yes, long hind toes and low heels can contribute to a broken back hoof pastern axis and may be associated with a horse standing under behind. A negative plantar angle should be confirmed with radiographs rather than judged from appearance alone. (MSD Veterinary Manual)

What is a negative plantar angle in a horse?

A negative plantar angle means the coffin bone in the hind foot is angled so the back of the bone sits lower than the front relative to the ground. It is usually assessed on a lateral radiograph. (MDPI)

Can trimming change a horse’s posture?

It can in some horses. A 2022 pilot study found that changing hind hoof balance through farriery intervention altered hind limb orientation in some horses with negative plantar angles. More research is still needed, and correction should be guided by a vet and farrier team. (MDPI)

Should every horse with low hind heels get wedges?

No. Wedges can be useful in selected cases, but they are not automatically appropriate. The decision should be based on radiographs, hoof capsule quality, lameness, sole depth, heel support, and the horse’s workload.

How often should hind feet be trimmed?

Many horses need trimming or shoeing every 6 to 8 weeks in summer, while winter intervals may be 6 to 12 weeks depending on hoof growth. Horses with long toe, low heel tendencies, performance demands, or hoof distortion may need shorter cycles. (University of Minnesota Extension)

The Bottom Line

Hind hoof balance matters more than many owners realise.

A horse with long hind toes, low heels, a broken back hoof pastern axis, or negative plantar angles may change the way it stands and moves. That altered posture can affect loading through the hind limbs, pelvis, back, and the rest of the body.

But this is not a shortcut diagnosis. The hind feet should be assessed as part of the whole horse, not blamed for everything.

The best approach is a calm, structured one: look at the posture, assess the hoof, check for lameness, use radiographs when needed, involve both vet and farrier, make corrections thoughtfully, and monitor how the horse responds over time.

Your horse’s posture starts at the ground, but the answer usually needs the whole horse.

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If your horse is standing under behind, losing engagement, or showing signs of hind hoof imbalance, ASK A VET™ can help you organise the signs, understand what matters, and decide when a hands-on vet and farrier assessment is needed.