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Lameness in the Performance Horse (Rashmir)
- 1. My Horse University and eXtension’s HorseQuest welcome you to this live Webcast. Lameness in the Performance Horse Ann Rashmir-Raven, DVM, MS Diplomate, American College of Veterinary Surgeons Michigan State University, College of Veterinary Medicine
- 7. Barefoot horse in stockyard, before & after trimming Before & after trimming Photos courtesy of Dr. Tia Nelson
- 10. Photos courtesy of Dr. Tia Nelson
- 11. Posterior support at the heels. Photos courtesy of Dr. Tia Nelson
- 14. ENGLISH SADDLE Thermographic image-post ride Courtesy of Dr. Jim Waldsmith
- 15. WESTERN SADDLE Thermographic image-post ride Courtesy of Dr. Jim Waldsmith
- 23. Gait Analysis Courtesy of Dr. Hilary Clayton McPhail Center Michigan State University State-of-the-art system 10 cameras with 6 imbedded force plates
- 28. ULTRASOUNDS “ Bowed Tendons” Superficial digital flexor tendonitis
- 32. Magnetic Resonance Imaging (MRI) Michigan State University
- 36. Front to back (AP)
- 37. Front view (AP) Normal Increased channels
- 52. Hylauronic acid Molecular weight is likely key If being used in the joint ask for the best, not the least expensive Hylartin V 3.5x10 6 3-18 mg 20mg Hyvisc 2.1x10 6 4-18 20mg Map-5 7.5x10 5 5-20 20mg** (topical) Legend 3x10 5 40-100 20mg IA or 40 IV
- 57. Thank you for attending this live web presentation! For more information about My Horse University please visit us at: www.myhorseuniversity.com info@myhorseuniversity.com | www.myhorseuniversity.com | 517-353-3123
Editor's Notes
- Although catastrophic failure of the SDFT can occur, several factors have been named as possible causes for microtrauma to the core region of the tendon. Accumulated microtrauma is thought to weaken the tendon, culminating in a partial or total rupture of the SDFT. These deleterious factors include the uniform galloping training regimen, ischemia and hypoxia during maximal loading, hyperthermia in the core of the tendon, reperfusion injury, conformation and vascular factors (tied in behind the knee, low hoof angle, long pasterns) and age. The traumatized SDFT core has a gross pink or purple appearance. The damaged tendon core matrix contains an increased amount of total sulfated glycosaminoglycans, Type III collagen, and cellularity. Type l and Type III collagen have differing biomechanical characteristics, predisposing the tendon to recurring damage and reduced gliding function.
- Injuries of the core or central zone of the mid-metacarpal region of the superficial digital flexor tendon are among the most common career-limiting or career-ending injuries in performance horses. This kind of injury can also occur in the deep digital flexor tendon and its accessory ligament and the suspensory ligament in the fore and hind limbs. These injuries occur frequently in horses required to gallop or jump at high speeds, and consequently affect horses engaged in flat racing, steeplechasing, and eventing . Approximately 30% of horses in training for the aforementioned types of competition are thought to be affected by bowed tendons.