A Randomized, Self-Controlled Case Series Evaluating Core Osteostixis of Osseous Cyst-Like Lesions of the Navicular Bone to Improve Lameness in Horses with Podotrochlear Syndrome.
Abstract: Podotrochlear syndrome is a common cause of lameness in Quarter Horses involving both soft tissue and bony structures within the heel region. Current surgical treatment of podotrochlear syndrome addresses pathological changes affecting the soft tissue structures of the navicular region but does not address either edema or cyst-like lesions of the navicular bone. Unassigned: The objective of this randomized, self-controlled case series was to determine whether core osteostixis improved lameness in Quarter Horses with podotrochlear syndrome characterized by bilateral magnetic resonance imaging (MRI) findings of osseous cyst-like lesions of the navicular bone. Unassigned: Seven Quarter Horses that had not responded to standard medical management were included. Each horse had an affected forefoot randomly assigned to surgical treatment with navicular bursoscopy and core osteostixis; the contralateral limb was assigned to navicular bursoscopy only. Video recordings were used to assign lameness scores and make comparisons of each limb at baseline and 24 weeks post-operatively by an observer blinded to the surgical treatment. A second MRI was performed 24 weeks after surgery to reevaluate navicular bone edema, osseous cyst-like lesions of the navicular bone, and tears of the deep digital flexor tendon (DDFT). Unassigned: Reduction of lameness score from baseline was significantly (P = 0.0254) greater for the limbs treated with core osteostixis than limbs treated with bursoscopy. New DDFT tears were noted in 3 of 7 limbs treated with core osteostixis and in 1 of 7 bursoscopy limbs. Unassigned: Results of this study suggest that core osteostixis of the navicular bone combined with navicular bursoscopy can improve lameness in horses with osseous cyst-like lesions. Further evaluation of this technique is warranted.
© 2023 Brock et al.
Publication Date: 2023-03-15 PubMed ID: 36945679PubMed Central: PMC10024883DOI: 10.2147/VMRR.S399835Google Scholar: Lookup
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Summary
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The research focuses on the effectiveness of a surgical procedure, core osteostixis, in treating a common lameness cause in Quarter Horses, the podotrochlear syndrome. The authors have conducted a randomized, self-controlled case study to understand this surgical procedure’s impact on horses’ lameness characterised by osseous cyst-like lesions of the navicular bone.
Overview of the Research
- Podotrochlear syndrome, a common cause of lameness in Quarter Horses, is characterized by osseous cyst-like lesions of the navicular bone found through magnetic resonance imaging (MRI).
- The syndrome involves both soft tissue and bony structures within the heel region. The current surgical treatment addresses the soft tissue structures but neglects pathological changes such as cyst-like lesions or bone edema.
- The research aims to investigate the efficiency of core osteostixis, a surgical technique, in improving lameness in horses affected by podotrochlear syndrome.
Research Methodology
- This study considered seven Quarter Horses unresponsive to standard medical management for the case series.
- Each horse had one forefoot randomly assigned for surgical treatment with core osteostixis combined with navicular bursoscopy. The contralateral limb got treatment with only navicular bursoscopy for comparison purposes.
- To assess and compare the lameness, video recordings of each limb were used at baseline and 24 weeks post-surgery.
- An observer blinded to the type of surgical treatment assigned the lameness scores.
- A follow-up MRI was conducted 24 weeks after surgery to reevaluate the navicular bone for edema, cyst-like lesions, and tears in the deep digital flexor tendon (DDFT).
Findings of the Study
- The study found a significant reduction in the lameness score from the baseline for the limbs treated with core osteostixis compared to only navicular bursoscopy.
- New deep digital flexor tendon (DDFT) tears were observed in three limbs treated with core osteostixis and one limb treated with only bursoscopy.
- The results suggest that combining core osteostixis with navicular bursoscopy can improve horses’ lameness suffering from podotrochlear syndrome.
- However, further evaluation of the technique is recommended due to the occurance of new DDFT tears associated with the use of core osteostixis.
Cite This Article
APA
Brock BA, Greer HR, Honnas CM, Gilleland BE, Barrett MF, Moore JN, Cohen ND.
(2023).
A Randomized, Self-Controlled Case Series Evaluating Core Osteostixis of Osseous Cyst-Like Lesions of the Navicular Bone to Improve Lameness in Horses with Podotrochlear Syndrome.
Vet Med (Auckl), 14, 35-46.
https://doi.org/10.2147/VMRR.S399835 Publication
Researcher Affiliations
- Brock Veterinary Clinic, Lamesa, TX, USA.
- Brock Veterinary Clinic, Lamesa, TX, USA.
- Texas Equine Hospital, Bryan, TX, USA.
- Department of Large Animal Medicine, College of Veterinary Medicine, Athens, GA, USA.
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA.
- Department of Large Animal Medicine, College of Veterinary Medicine, Athens, GA, USA.
- Department of Large Animal Clinical Sciences, School of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX, USA.
Conflict of Interest Statement
The authors report no conflicts of interest in this work.
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