A Practical Guide to Managing Bone Development in Young Racehorses

Introduction

Since beginning my veterinary practice in 1991, I’ve experienced a shift in approaches to managing bone injuries in young racehorses. Early in my career, most horses with bone injuries were sent to the farm for extended layups (usually 120 days), only to return to training and suffer similar or even catastrophic injuries. Through years of experience and by collaborating with insightful trainers and veterinarians, I have refined my approach to managing bone development and injury recovery.

In the early years of my practice, I operated countless fractured shins with screw-fixation or osteostixis (drilling).  Too many of these cases recurred later.  After developing a more comprehensive approach with supplementation, surgery became unnecessary and obsolete.  With this improved method, cases resolved with successful and faster recoveries.

Understanding Bone Development and Injury Management

Managing bone health effectively requires collaboration between the trainer, veterinarian, and farrier. While each case is unique, a few guiding principles and protocols can help ensure successful outcomes.

Primary Goals:

• Prepare young horses for sales
• Build fitness and soundness for racing
• Minimize the risk of injuries and setbacks

When Setbacks Occur:

Injuries and developmental obstacles are inevitable in racehorse training. Often, simply allowing a little time for recovery along the way is the best remedy. However, this approach can conflict with sales schedules and owners’ expectations. Educating owners on the importance of situational patience is vital for long-term success.

My Approach to Lameness Management:

Definitive diagnosis is crucial. Guesswork and assumptions lead to failure. The following protocols outline effective approaches for common bone injuries in my practice.

Common Bone Injuries and Their Management

1. Bucked Shins:

Without Radiographic Changes:

• Walk until sound
• Jog until heat and sensitivity subside
• Resume training, minimizing galloping and space out works as needed

With Radiographic Changes (Periosteal reaction, callus):

• Walk if unsound
• Jog until periosteum appears normal on radiographs; heat and sensitivity to palpation subside
• Limit galloping and space works as needed

With Cortical Fractures:

• Minimum 30 days of hand-walking
• Extracorporeal Shock Wave Therapy (≥ three treatments, every 10 days)
• Resume jogging only when radiographically healed
• Reintroduce works with limited galloping
• Anecdote: Stake-level horses have returned to winning form without a single gallop using this protocol

2. Tibial Stress Fractures:

With Callus (No Cortical Fracture):

• Walk until sound (minimum two weeks, varies by individual)
• Jog for 30 days. If lameness returns, restart with walking
• Gradually reintroduce gallops and works

With Cortical Fracture:

• Hand-walk until fracture resolves radiographically
• Resume jogging and follow the same protocol as for tibial callus

3. Humeral Stress Fractures:

• Handle similarly to tibial stress fractures
• Keep in mind, most catastrophic humeral factures occur while galloping.  Monitor these fractures with imaging along the way and avoid premature galloping.

Additional Tools for Managing Bone Health

1. Extracorporeal Shock Wave Therapy (ESWT):

Despite regulatory scrutiny, ESWT is a valuable tool for promoting bone healing through increased osteoblast activity. In my experience, it is indispensable for managing fractures and bone disorders.

2. Supplementation (See The Science Behind Supplementation for Bone Health below)

Pharmaceutical options for bone healing are limited. However, high-quality supplements play a critical role in supporting bone development and recovery.

3. Thermography:

• Useful for early detection and ongoing monitoring of bone stress
• Apps are available to turn your phone into a useful thermography unit

4. Computerized Gait Analysis (Lameness Locator^® and others):

• Provides early detection of subtle gait changes before they are visible to the human eye or felt by riders
• Even though these are typically intended for veterinarians, with experience trainers can effectively incorporate this tool into their programs

5. Advanced Imaging Techniques:

These imaging tools help achieve definitive diagnoses and monitor recovery progress.

• Nuclear Scintigraphy
• PET Scans
• MRI

Final Thoughts:

Effective bone injury management blends experience, technology, and collaboration. While protocols are valuable, individualized care tailored to each horse is paramount. Building a trusted team and educating owners on the importance of proper recovery are essential components of long-term success.

Credits:
The insights shared here are drawn from years of experience and collaboration with numerous talented trainers (too numerous to name) and veterinarians. Their contributions have been instrumental in refining my approach to managing bone development in young racehorses.

Disclaimer:
The recommendations presented are general guidelines. Individual treatment plans should be developed in collaboration between the trainer, veterinarian and farrier, considering each horse’s specific needs and training philosophies.

 

The Science Behind Nutritional Support for Equine Bone Health

Modern conditioning programs place substantial mechanical demands on the developing skeletal system of young performance horses. Supporting normal bone metabolism through targeted nutrition is increasingly recognized as a valuable component of comprehensive training management programs.

Observational Use and Practical Application

SynOsteon® has been incorporated into structured conditioning programs for young racehorses and horses returning to training. In practice settings where supplementation was implemented alongside progressive training protocols, trainers reported improved continuity of training schedules and reduced interruptions associated with skeletal adaptation challenges commonly observed in early conditioning phases.

In an internal observational program involving over 100 two- and three-year-old horses receiving SynOsteon® as part of their overall nutritional program, participating trainers reported consistent training progression throughout early conditioning periods. Horses returning to training after time away were likewise supported nutritionally during their reconditioning programs.

These observations reflect field experience under real-world training conditions and support the role of targeted nutritional supplementation as part of a broader bone-support strategy.

Formulation Approach and Functional Ingredients

SynNutra Equine formulations employ a synergistic ingredient strategy designed to provide nutritional support for normal bone remodeling processes.

Vitamin K2 (Menaquinone)
Supports normal calcium utilization and contributes to maintenance of bone mineral content.

Beta-Glucans (1,3/1,6)
Provide nutritional support for normal cellular activity involved in bone turnover.

Icariins (Epimedium extract)
Contribute to nutritional support of normal osteoblastic activity and bone matrix formation.

Silica
Supports collagen synthesis and normal mineral deposition in connective tissues.

Vitamin D and Calcium
Essential nutrients required for normal calcium absorption and skeletal maintenance.

Together, these ingredients are selected to support the physiological processes responsible for maintaining strong, resilient skeletal structure during training and performance.

A Comprehensive Approach to Soundness Support

Supporting skeletal integrity in young performance horses requires a multifactorial strategy. Progressive conditioning programs, appropriate surface management, veterinary oversight, and targeted nutritional supplementation all contribute to maintaining normal bone adaptation to training demands.

SynOsteon® is designed to complement responsible training programs by providing nutritional support for normal bone metabolism, helping owners and trainers maintain consistency in conditioning schedules and overall performance preparation.

For trainers and owners, proactive nutritional management of bone health represents an investment in long-term athletic development. When combined with sound training practices, targeted supplementation can be a valuable component of a comprehensive equine performance program.