The intercarpal ligaments of the equine midcarpal joint, Part 1: The anatomy of the palmar and dorsomedial intercarpal ligaments of the midcarpal joint.
Abstract: To describe in detail the structure of the medial palmar intercarpal ligament (MPICL), the lateral palmar intercarpal ligament (LPICL), and a dorsomedial intercarpal ligament (DMICL) of the equine midcarpal joint. Methods: Dissections of equine midcarpal joints. ANIMALS AND SAMPLE POPULATION: Ten carpal joints from eight thoroughbred horses. Methods: Detailed dissections of the midcarpal joint were performed, with particular attention paid to the MPICL, the LPICL, and the DMICL. The attachments and dimensions of these structures were recorded, as well as their behavior during joint movement. Results: The DMICL arose from the dorsomedial surface of the radial carpal bone (CR) and coursed palmarodistally to insert on the dorsomedial aspect of the second carpal bone (C2). The LPICL attached proximally predominantly on the distal part of the palmaromedial surface of the ulnar carpal bone (CU). From here the ligament coursed distomedially and slightly palmarly to the proximal palmarolateral surface of the third carpal bone (C3). The structure of the MPICL was complex. It attached proximally to the distolateral surface of the CR and distally to the proximal palmaromedial surface of C3, and the proximal palmarolateral aspect of the C2. It could be divided into four fiber bundles in all carpi. The predominant direction of fibers was dorsoproximal to palmarodistal, whereas the palmaromedial bundle coursed palmaroproximal to dorsodistal. Conclusions: The orientation of their fibers indicate that the MPICL and DMICL primarily resist dorsomedial displacement of CR, whereas the LPICL resists dorsolateral displacement of the CU and intermediate carpal bone. Conclusions: An understanding of the structure of the intercarpal ligaments of the midcarpal joint is important in interpreting their function and the reasons for damage to their structure.
Publication Date: 1997-10-06 PubMed ID: 9381660DOI: 10.1111/j.1532-950x.1997.tb01694.xGoogle Scholar: Lookup
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Summary
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This research explores the detailed anatomy of certain ligaments – the medial and lateral palmar intercarpal, and the dorsomedial intercarpal – in the midcarpal joint of horses. The study is based on the dissection of these parts from 10 horse carpal joint samples, revealing their structure, dimensions, attachments and behavior during joint motion.
Anatomy and Procedure
- The researchers used thoroughbred horses’ carpal joints to study the structure and composition of the medial palmar intercarpal ligament (MPICL), lateral palmar intercarpal ligament (LPICL), and dorsomedial intercarpal ligament (DMICL).
- These ligaments connect the bones in the horse’s midcarpal joint, and the researchers thoroughly dissected them to understand their anatomical structure, dimensions, and their behavior during joint movement.
Findings
- The DMICL was found to arise from the dorsomedial surface of the radial carpal bone (CR) and coursed palmarodistally to be attached to the dorsomedial aspect of the second carpal bone (C2).
- The LPICL attached proximally predominantly on the distal part of the palmaromedial surface of the ulnar carpal bone (CU), and from here, it coursed distomedially and slightly palmarly to the proximal palmarolateral surface of the third carpal bone (C3).
- The structure of the MPICL was complex, attached to the distolateral surface of the CR, the proximal palmaromedial surface of C3, and the proximal palmarolateral aspect of the C2.
Behavior of Ligaments
- The direction of fibers indicated that the MPICL and DMICL primarily resist dorsomedial displacement of the CR.
- On the other hand, LPICL resists dorsolateral displacement of the CU and the intermediate carpal bone.
Importance of the Study
- The study provides an in-depth understanding of the structure of the midcarpal joint ligaments in horses.
- This knowledge can help to better understand their function and diagnose damage causes in these areas.
Cite This Article
APA
Whitton RC, McCarthy PH, Rose RJ.
(1997).
The intercarpal ligaments of the equine midcarpal joint, Part 1: The anatomy of the palmar and dorsomedial intercarpal ligaments of the midcarpal joint.
Vet Surg, 26(5), 359-366.
https://doi.org/10.1111/j.1532-950x.1997.tb01694.x Publication
Researcher Affiliations
- Department of Veterinary Clinical Sciences, University of Sydney, Australia.
MeSH Terms
- Animals
- Carpus, Animal / anatomy & histology
- Carpus, Animal / physiology
- Horses / anatomy & histology
- Horses / physiology
- Ligaments / anatomy & histology
- Ligaments / physiology
Citations
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