The Achilles tendon is found in the back of the leg above the heel, and is the largest tendon in the body. It connects the calf muscles to the heel bone and is used when walking, running and jumping. A rupture of the tendon is a tearing and separation of the tendon fibers. When a rupture of the tendon occurs, the tendon can no longer perform its normal function. A common issue related to a tear is the inability to point your toe.Causes
Often the individual will feel or hear a pop or a snap when the injury occurs. There is immediate swelling and severe pain in the back of the heel, below the calf where it ruptures. Pain is usually severe enough that it is difficult or impossible to walk or take a step. The individual will not be able to push off or go on their toes.
Symptoms
Ankle pain and swelling or feeling like the ankle has ?given out? after falling or stumbling. A loud audible pop when the ankle is injured. Patients may have a history of prior ankle pain or Achilles tendonitis, and may be active in sports. Swelling, tenderness and possible discoloration or ecchymosis in the Achilles tendon region. Indentation above the injured tendon where the torn tendon may be present. Difficulty moving around or walking. Individual has difficulty or is unable to move their ankle with full range of motion. MRI can confirm disruption or tear in the tendon. Inability to lift the toes.
Diagnosis
A diagnosis can be made clinically, but an MRI or ultrasound scan can confirm it. On examination, the patient will present with reduced plantarflexion strength, a positive Thompson test and potentially, a palpable gap in the Achilles. The whole length of the tendon should be examined to check for injuries that can occur at the insertion and the musculotendinous junction.
Non Surgical Treatment
You may need to wear a plaster cast, brace or boot on your lower leg for six to eight weeks to help the tendon heal. During this time, your doctor will change the cast a number of times to make sure your tendon heals in the right way. If your tendon is partially ruptured, your doctor will probably advise you to have this treatment instead of surgery. It?s also suitable for people who aren't very physically active. However, there is a greater risk that your tendon will rupture again, compared with surgery. Your doctor will advise you which treatment is best for you.
Surgical Treatment
Surgical techniques for rupture repair are varied but usually involve reapproximation of the torn ends of the Achilles tendon, sometimes reinforced by the gastrocsoleus aponeurosis or plantaris tendon. Open reconstruction is undertaken using a medial longitudinal approach. Studies indicate that patients who undergo percutaneous, rather than an open, Achilles tendon rupture repair have a minimal rate of infection but a high rate of sural nerve entrapment (16.7% of treated cases).