In 40 seconds
SDFT (superficial digital flexor tendon) injury is the most common tendon problem in racing and eventing horses. Recovery is slow — 9–12 months for proper return to full work. PEMF therapy accelerates SDFT healing through improved microcirculation, reduced inflammation, and stimulated tenocyte activity. Standard kit in serious racing and eventing yards. Best alongside controlled exercise rehabilitation programmes.
Quick facts
- Most common in: Racehorses, eventers, showjumpers
- Recovery time: 9–12 months typical
- PEMF role: Accelerates tendon healing
- Sessions: Daily for 2 weeks → 3× per week
- Always with: Vet-led rehab programme
Practical guidance
See FAQ below for specific scenarios.
Contraindications
Hard exclusions — do not have PEMF if any apply:
- Pacemaker, implantable cardioverter-defibrillator (ICD), or any cardiac electronic device
- Cochlear implant or other implanted electronic hearing device
- Spinal cord stimulator, deep-brain stimulator, vagus nerve stimulator
- Intrathecal pump or implanted drug pump
- Insulin pump (continuous glucose monitors are usually fine — confirm with the clinic)
- Active infection at the treatment site
- Pregnancy — when treatment would be over the abdomen, lumbar spine, or pelvis
Discuss with your GP or specialist before booking if any apply:
- Active malignancy or recent cancer history (oncologist clearance required)
- History of seizures or epilepsy
- Multiple sclerosis or other neurological condition under specialist care
- Anticoagulant therapy (PEMF itself does not thin blood, but bruising risk if local circulation is already compromised)
- Children under 14 (most UK clinics will not treat under-18s without paediatric specialist input)
- Recent surgery within the last 14 days at the treatment site (confirm with surgeon)
NOT contraindications — these are commonly misunderstood:
- Plates, rods, screws and other passive metal orthopaedic hardware
- Dental implants and dental crowns
- Joint replacements (hip, knee, shoulder)
- IUDs (copper or hormonal)
- Tattoos and piercings (jewellery should be removed for the session)
Specific to this condition: pacemakers, defibrillators, cochlear implants, insulin pumps, electronic implants; active malignancy without specialist clearance; pregnancy (over the abdomen); active infection; epilepsy without GP clearance.
Frequently asked questions
How early to start PEMF after SDFT injury?
Often as soon as vet clears (typically week 1–2 post-diagnosis). Earlier is better for healing biology.
Daily use OK?
Yes initially — many top yards do daily 30-minute sessions in the first 2 weeks.
Will it shorten the layoff?
Often by weeks. Most yards report faster ultrasound-confirmed healing with PEMF.
Best applicator?
Equine boot or wrap directly over the affected tendon area.
Looking for a PEMF clinic near you?
We list every credible PEMF therapy provider in the UK so you can find one near home.