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Navicular bursoscopy in the horse: a comparative study.

Jennifer L Haupt¹, John P Caron

¹Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI, USA.

Veterinary Surgery : VS

|May 13, 2010

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A modified approach to the equine navicular bursa offers better visualization and less damage compared to the conventional method. This technique allows for near-complete examination with minimal iatrogenic injury, improving equine surgical outcomes.

Area of Science:

Equine surgery
Veterinary orthopedics
Diagnostic imaging

Background:

Navicular bursitis is a common condition in horses.
Arthroscopic examination of the navicular bursa is challenging.
Conventional endoscopic approaches may cause iatrogenic damage.

Purpose of the Study:

To compare the visualization of the proximal recess of the navicular bursa.
To assess the severity of iatrogenic lesions between conventional and modified endoscopic approaches.

Main Methods:

A descriptive study using 16 equine cadaver forelimbs.
Arthroscopic access to the navicular bursa via conventional and modified transthecal approaches.
Quantification of access time, visible proportion of the bursa, and iatrogenic damage to the navicular bone and deep digital flexor tendon (DDFT).

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Main Results:

The modified approach allowed visualization of 80% of the bursa compared to 60% with the conventional approach.
Iatrogenic damage scores for the navicular bone and DDFT were significantly lower with the modified technique (P=.003 and P=.012, respectively).
Mean access time was slightly longer for the modified approach (2.09 min vs 1.21 min).

Conclusions:

A modified transthecal approach provides superior visualization of the navicular bursa with significantly less iatrogenic damage.
This technique is feasible, relatively quick with experience, and enables thorough examination through a single portal.
The modified approach is recommended for improved diagnostic accuracy and reduced complications in equine navicular bursa arthroscopy.