21/11/2025
Formula 1 🏎️ vs Formula 7-18-6-5 🐎?
Both have a lot of horse power (or a lot of horse to power).
Let’s break down the horse spinal formula:
C7 – T18 – L6 – S5 – Cd15–21
Total: ~54 vertebrae - that’s a lot to take of!
🦴 CERVICAL (C1–C7) – 7 vertebrae
• Function: Flexibility, head/neck movement, balance
• Characteristics: most mobile segment, Atlas & Axis = 1&2 uniquely shaped vertebrae allowing for nodding (atlas) and rotation (axis)
• Common issues: Poll tension, nuchal ligament damage/displacement, cervical OA, malformations, nerve root pain
🦴 THORACIC (T1–T18) – 18 vertebrae
• Function: Stability, rib cage attachment, shock absorption
• Characteristics: Long spinous processes
• Common issues: Kissing spines, facet joint pain, saddle soreness
🦴 LUMBAR (L1–L6) – 6 vertebrae
• Function: Power transfer
• Characteristic: long flat transverse processes, limited lateral movement
• Common issues: Lumbar tension, LS pain, facet joint pain
🦴 SACRUM (S1–S5) – 5 vertebrae
• Function: Connects spine to pelvis via sacroiliac joint (LSJ) = major force-transfer point from the hindlimbs
• Characteristic: fused vertebrae
• Common issues: SIJ dysfunction
🦴 CAUDAL/TAIL (Cd15–21)
• Function: Balance, communication
• Common issues: Tail injuries, misalignment
Common Variations
• Caudal vertebrae number varies
• Lumbar–sacral transitional vertebrae
• Different dorso-spinous process spacing
Don’t forget to MOT your horse after the season 🐎 message me at for an appointment 📍east of Suffolk 🇬🇧