Summary
Objectives: Chronic degeneration of the gastrocnemius tendon results in scar tissue formation
at the insertion of the tendon, and detachment from the calcaneus. In severe cases,
excision of this tissue makes repositioning of the tendon to the calcaneus extremely
difficult. A polyethylene terephtha-late implant, used to aide repair by bridging
gaps and allowing tissue ingrowth, was evaluated.
Methods: In this retrospective study, clinical records were evaluated to assess long-term
outcomes and complications. The surgical technique is also described. The implant
was sutured proximally into the gastrocnemius at the myotendinous junction, and secured
into the calcaneus using an interference screw.
Results: The implant was used in 10 patients; of which seven returned to full function. Major
complications, due to infection, were identified in two of the 10 patients. Minor
complications occurred in five of the 10 patients. These were associated with external
coaptation in three of the patients in the immediate postoperative period. One minor
infection was reported. These all resolved without further complication. Long-term
outcome was available in eight patients, with six of these eight dogs returning to
normal exercise.
Clinical significance: This implant may be suitable for use in canine patients with severe gastrocnemius
tendon degeneration. Ongoing evaluation is warranted.
Keywords
Gastrocnemius - Achilles - interference screw - synthetic - dog