Bone Spavin (Osteoarthritis of the Tarsal Joints)
Bone spavin is a progressive, degenerative osteoarthritis of the small, tight hock joints (lower tarsal joints). Over time the affected joint surfaces can fuse, which often reduces the lameness again in the long run. It usually develops insidiously and frequently affects older horses or those heavily used over years.
Veterinary care required
This condition belongs in veterinary diagnosis and treatment. Compounds are at most supportive.
Priority · vet & management
Diagnosis (lameness exam, flexion tests, radiography) and therapy, plus adapted hoof care and exercise management, belong in veterinary and farrier hands; controlled, regular movement instead of abrupt load peaks is central. Compounds are only adjunctive.
Possible causes
- · years of strain on the hock joints (jumping, dressage, hard ground)
- · limb deviations and unfavourable limb axes
- · age-related joint wear
- · genetic predisposition and conformation
Supportive compounds · supplementary feed, not medication
Green-lipped mussel
AMGFEI freeprovides glycosaminoglycans and omega-3 (ETA); discussed in the context of joint comfort
Compound profile →MSM
AMGFEI freeorganic sulphur source, discussed as antioxidant
Compound profile →Glucosamine
AMGFEI freecartilage building block; oral efficacy scientifically debated
Compound profile →Chondroitin sulfate
AMGFEI freecartilage GAG, often combined with glucosamine
Compound profile →Ginger
AMGFEI freegingerols, traditionally used for joint comfort
Compound profile →Rosehip
AMGFEI freepolyphenols/GOPO, studied in human joint-discomfort trials (adjunctive)
Compound profile →Devil's claw
AMGFEI withdrawaltraditionally used for joint topics — FEI: doping-relevant, prohibited in competition
Compound profile →Prevention
Correct, regular hoof trimming, even warming up, balanced training load and avoiding hard ground relieve the hock joints.
Equiterna's take
Equiterna views bone spavin in the interplay of limb stance, hoof trimming, training control and joint metabolism — the diagnostics remain strictly veterinary.
Usage note
This content is for information and education. It does not replace veterinary diagnosis or treatment. If your horse shows signs of illness, consult a veterinarian.
Equiterna is an intermediary platform for equine knowledge, marketplace and tools — not a veterinary-medicines dealer, veterinary practice or pharmacy. Compound information is study-attributed and free of healing claims. Legal framework: Regulation (EU) 2019/6 / TAMG (DE/AT), Feed Regulation (EC) 767/2009, FEI Prohibited Substances List, HWG.


