Mid-metacarpal deep digital flexor tenotomy in the management of refractory laminitis in horses.

The research article presents the results of a study that examined the use of a surgical procedure, deep digital flexor tendon transection at the mid-metacarpus, as a last resort treatment for horses suffering from severe and treatment-resistant laminitis. The study found that while the surgery provided immediate relief for some horses, it did not significantly improve the overall survival rate.

Overview of the Study

• This research involved 20 horses that were suffering from severe acute or chronic laminitis, a painful and potentially debilitating condition affecting the horse’s foot. This form of laminitis had not responded to conventional treatments, leading researchers to investigate alternative methods.
• The alternative method tested was a surgical procedure called deep digital flexor tendon transection performed at the mid-metacarpus, a location on the horse’s front leg just above the hoof. It is an invasive surgical procedure that aims to alleviate the pain and pressure caused by laminitis.

Study Findings

• Of the 20 horses treated, 16 showed improvement within at least 72 hours of the surgery. This improvement was presumably marked by reduced lameness or pain. However, one horse’s condition worsened after the surgery, and two horses showed no change in their condition.
• Despite the initial response, the overall survival rate was not significantly improved by the surgery. Eleven of the 20 horses survived less than one month after the surgery, and six horses survived for at least six months.
• For the three horses surviving longer than six months, they remained lame and could not go back to athletic performance, implying that the surgery offers only temporary relief and doesn’t necessarily restore the horse’s full functionality.

Conclusions and Implications

• The study concluded that while deep digital flexor tenotomy at the mid-metacarpus can provide immediate pain relief for horses with severe, treatment-resistant laminitis, it does not necessarily prolong their survival or restore their functionality.
• This suggests that such a surgical procedure should be considered a last resort or immediate salvage procedure rather than a definitive solution. Further research is needed to better understand the long-term effects of the procedure and identify ways to improve survival and functionality for horses with laminitis.