Suspensory Ligament Injuries in Horses: How Collagen Supports Recovery
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Introduction
If your horse has been diagnosed with a suspensory ligament injury, you are not alone. Suspensory ligament damage is one of the most common causes of lameness in horses and ponies in the UK — and one of the most difficult to recover from without the right support.
In this guide we cover what the suspensory ligament does, why it gets injured, what happens inside the tissue during healing, and crucially — what role collagen supplementation plays in helping horses recover faster and more completely.
What Is the Suspensory Ligament in Horses?
The suspensory ligament runs down the back of the cannon bone, from just below the knee or hock, splitting into two branches that wrap around and support the fetlock joint. Its primary job is to carry the horse's weight, absorb concussive forces, and prevent the fetlock from dropping too far under load.
It is under enormous stress with every single stride.
In horses in regular work — particularly sport horses, eventers, racehorses and dressage horses — the suspensory ligament is subjected to repeated loading cycles. Over time, small micro-tears accumulate in the fibres. This is why suspensory injuries often develop gradually, with subtle changes in gait or way of going long before obvious lameness appears.
Common causes of suspensory ligament injury in horses include:
- Repetitive work on hard, deep or uneven ground
- Sudden increases in workload or training intensity
- Poor foot balance creating uneven strain on the limb
- Conformational factors that increase stress on the soft tissue
- Age-related deterioration in tissue quality and elasticity
Hind limb suspensory injuries are particularly common in sport horses and warmbloods, and are notoriously difficult to diagnose early due to low-grade, inconsistent lameness.
What Happens Inside the Suspensory Ligament During Injury?
The suspensory ligament is made up predominantly of collagen fibres — tightly organised bundles that give the ligament its tensile strength and elasticity. When injury occurs, those fibres break down and tear.
The body immediately begins trying to repair the damage. But here lies the core problem with suspensory ligament recovery: the repair tissue produced in the early stages of healing is not the same quality as the original ligament tissue.
The body lays down a disorganised mix of scar tissue and inferior collagen. This repair material is weaker, less elastic, and significantly more vulnerable to re-injury than healthy ligament fibres. Without proper nutritional support, the healed suspensory ligament may never fully regain its original strength — which is why re-injury rates remain so high.
The Role of Collagen in Suspensory Ligament Recovery
Collagen is the structural protein that makes up approximately 70% of the dry weight of tendons and ligaments. It is the material responsible for their strength, flexibility and load-bearing capacity.
When a horse suffers a suspensory ligament injury, the body's ability to produce high-quality collagen to repair the damaged fibres is the single most important factor in how completely the ligament heals.
However, not all collagen is equal — and this is a critical point that many horse owners miss.
Generic collagen sources are often too large to be absorbed efficiently through the digestive system. They may provide a general protein source but do not specifically stimulate repair in connective tissue.
What makes the difference is targeted collagen peptides — short chain amino acids small enough to pass directly into the bloodstream and be transported to the site of injury, where they actively stimulate new collagen production in the damaged tissue.
How NDS® Equine TendonX® Supports Suspensory Ligament Recovery
NDS® Equine TendonX® was developed specifically to support tendon and ligament injuries in horses. It contains a clinically active collagen peptide uniquely designed to target connective tissue repair — not simply provide a generic protein supplement.
When given daily alongside a controlled exercise rehabilitation programme, TendonX has been shown to:
- Stimulate production of new, organised collagen fibres at the injury site
- Improve the quality and strength of repair tissue during healing
- Reduce overall recovery time from suspensory and tendon injuries
- Significantly lower re-injury risk by rebuilding ligament strength long term
It contains 100% pure collagen peptides with no fillers, no synthetic ingredients, no flavourings and no sugars — just the active ingredient your horse's suspensory ligament needs to heal properly.
Dosing during injury: The dose can be doubled during the active recovery period, then returned to the standard daily maintenance dose once your horse is back in work.
FEI Approved: TendonX is tested at an FEI-approved laboratory, making it safe for competition horses.
Real Results: What Horse Owners Say About TendonX
Karen's horse Monty was assessed by an equine vet following a hind limb suspensory ligament injury and retirement was suggested. Two months after starting TendonX, the same vet pronounced him sound enough to pass a vetting.
Tabitha had a horse ultrasonically scanned at the point of injury and again six months later. The improvement in the tissue was so significant that the vet was amazed. She now uses TendonX as a maintenance supplement for any horse with a history of tendon or suspensory trouble.
Suspensory Ligament Supplements: Prevention Matters Too
TendonX is not only for horses already dealing with an injury. Horses in regular work, competition horses, older horses and those with a previous history of suspensory or tendon damage can all benefit from daily collagen supplementation as a preventative measure.
Supporting the quality of the connective tissue before an injury occurs is significantly easier — and less costly — than managing a full suspensory ligament injury and the associated veterinary bills and time off work.
Frequently Asked Questions
Can supplements help a horse with a suspensory ligament injury? Yes. Targeted collagen peptide supplements have clinical evidence supporting their role in stimulating new collagen production in damaged tendons and ligaments, improving the quality of repair tissue and reducing recovery time.
How long does suspensory ligament recovery take in horses? Recovery varies depending on the severity of the injury, the location, and the quality of rehabilitation. Minor injuries may resolve in a few months; significant proximal suspensory injuries can take 12 months or longer. Nutritional support with collagen peptides alongside a structured exercise programme gives the best chance of full recovery.
What is the best supplement for suspensory ligament injury in horses? NDS® Equine TendonX® is specifically formulated for tendon and ligament injuries in horses, using a clinically active collagen peptide designed to target connective tissue repair. It is FEI approved and contains no fillers or synthetic ingredients.
Can I use TendonX as a preventative supplement? Yes. TendonX can be used at the standard daily dose as an ongoing maintenance supplement for horses in regular work, competition horses, and any horse with a history of tendon or ligament problems.
Summary
- Suspensory ligament injuries are caused by breakdown and tearing of collagen fibres
- The body's natural repair process produces weaker, inferior scar tissue without nutritional support
- Targeted collagen peptides — not generic collagen — actively stimulate proper tissue repair
- NDS® Equine TendonX® delivers a clinically active collagen peptide designed specifically for equine tendon and ligament recovery
- Daily supplementation supports both active recovery and long-term injury prevention