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  • Achilles tendon problems

The Achilles tendon can be damaged through trauma, or the insertion of the tendon at the ankle can become weakened without known trauma.

We saw a recent case where a dog was playing around in water and suffered a lacerated Achilles tendon caused by submerged glass or sheet metal. If the Achilles tendon is severed then it can’t be pulled tight, and so the ankle collapses. These dogs present walking “plantigrade” as if they were walking on their palms rather like bears, gorillas or us, rather than walking up on their toes as they should be. If the tendon injury is relatively fresh it can often be repaired with sutures.

In some large breed dogs, often Dobermans or Labrador retrievers, the insertion of the Achilles tendon on the calcaneal process, the “heel” of the ankle can weaken. These dogs often present with palpably thickened Achilles tendons. This disease is called enthesiopathy of the Achilles tendon.

Whether the tendon is weakened by laceration or enthesiopathy, it needs to be supported while it heals. This is usually achieved with a combination of screw(s) holding the ankle in extension and external extension splints/casts. The support is continued for several weeks. The screws and the cast are then sequentially removed and the prognosis is generally pretty good for return to function. The joint takes a few weeks to regain its range of flexion, and the full extent of flexion will inevitably be somewhat reduced even in the long term. This is rarely of any great consequence. Occasionally insufficient healing occurs and the function is poor, and in this case salvage with an ankle fusion procedure (see separate article) can usually give very satisfactory function.

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