Deep digital flexor tendon rupture in two horses: A potential complication of comminuted second phalangeal fractures
Authors: Elce Y. A., Goodrich L.
Journal: Equine Veterinary Education
Summary
# Editorial Summary: Deep Digital Flexor Tendon Rupture Following Comminuted Second Phalangeal Fractures Comminuted fractures of the second phalanx (P2) are recognised as serious injuries in horses, yet this case report by Elce and Goodrich highlights an often-overlooked complication: iatrogenic or traumatic rupture of the deep digital flexor tendon (DDFT) occurring secondary to the fracture itself or its management. Through two detailed clinical cases, the authors documented the presentation, diagnostic findings, and outcomes of horses in which DDFT integrity was compromised by sharp bone fragments or the inflammatory cascade surrounding comminuted P2 fractures, demonstrating that DDFT rupture significantly complicated surgical repair attempts and contributed to poor prognosis in both animals—including euthanasia in one case and severely limited athletic function in the other. The loss of palmar soft tissue support from tendon damage substantially compromised biomechanical stability of the healing fracture site, creating a compounding injury pattern that standard fracture fixation could not adequately address. Practitioners managing comminuted P2 fractures should carefully evaluate the DDFT on imaging and monitor for signs of tendon involvement, as recognition of this complication early may influence treatment decisions and owner discussions regarding realistic functional recovery.
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Practical Takeaways
- •Comminuted P2 fractures carry risk of DDFT rupture; assess soft tissue damage thoroughly on initial evaluation as it directly impacts prognosis
- •Loss of palmar support structures dramatically worsens biomechanical stability—factor this into realistic outcome discussions with owners
- •DDFT rupture combined with P2 fracture typically results in poor athletic outlook; euthanasia may be appropriate consideration in some cases
Key Findings
- •Deep digital flexor tendon rupture occurred as a complication of comminuted second phalangeal fractures in 2 horses
- •Loss of palmar soft tissue support significantly compromised biomechanical stability of fracture repair
- •DDFT rupture complicated treatment outcomes, contributing to euthanasia in one case and limited athletic recovery in the other