Diagnosis of hindlimb lameness using acupuncture points in sport horses
Authors: Tanakorn Phetkarl, A. Kidtiwong, Ashannut Isawirodom, Kritsana Watchararat, K. Na Lampang, Siriporn Khumsap, P. Rungsri
Journal: Veterinary Integrative Sciences
Summary
Hindlimb lameness in sport horses frequently escapes early detection because it presents diagnostic challenges compared to forelimb conditions, potentially allowing compensatory issues to develop. Researchers examined 33 sport horses (polo and riding) using three diagnostic approaches—acupuncture diagnosis (AD), subjective veterinary assessment, and objective inertial sensor systems—identifying 14 animals with hock pain who subsequently received intra-articular analgesia at the tarsometatarsal joint to confirm diagnosis. Agreement between acupuncture diagnosis and objective sensor data reached 71.43%, outperforming the 64.29% agreement between acupuncture and subjective veterinary examination, with four specific acupoints (Gallbladder-27, Spleen-13, Bladder-39a, and Bladder-39b) showing significantly improved sensitivity following successful analgesia of the hock joint. These findings suggest acupuncture diagnosis has measurable validity as an ancillary tool for identifying hock pain in sport horses, potentially offering practitioners—particularly those integrating traditional Chinese medicine principles—a more systematic approach to diagnosing subtle hindlimb lameness that might otherwise be missed during routine examinations. Further validation across larger, more diverse populations would strengthen clinical confidence in using these specific acupoints as part of a multi-modal lameness investigation protocol.
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Practical Takeaways
- •Acupuncture diagnosis may serve as a complementary tool for detecting hindlimb lameness, particularly hock pain, when traditional lameness examinations are inconclusive
- •Palpation sensitivity at GB-27, SP-13, BL-39a, and BL-39b acupoints warrants clinical assessment in sport horses with suspected hock lameness
- •Consider combining acupuncture diagnosis with objective sensor-based gait analysis and intra-articular analgesia blocks for more confident hock pain localization
Key Findings
- •Acupuncture diagnosis (AD) agreed with objective lameness examination (OE) in 71.43% of cases for identifying lame limbs, compared to 64.29% agreement between AD and subjective examination (SE)
- •Four acupoints (Gallbladder-27, Spleen-13, Bladder-39a, and Bladder-39b) showed significantly improved sensitivity following positive tarsometatarsal joint blocks
- •Acupuncture diagnosis identified hock pain in 14 of 33 sport horses examined, with improved acupoint sensitivity correlating with positive intra-articular analgesia response