Achilles Tendon Injuries in Recreational Athletes

The Achilles is the largest and most heavily loaded tendon in the human body — it can withstand forces of up to ten times body weight during running. It is also the tendon most likely to declare itself in the middle of a busy life, often in athletes in their 30s and 40s who have returned to sport after time away. This article covers the two distinct Achilles problems we see most often — Achilles tendinopathy (a chronic overload problem) and Achilles rupture (an acute, dramatic injury) — and the modern evidence on how to manage each.

Achilles tendinopathy

Tendinopathy is the chronic, gradually worsening pain and stiffness in the Achilles that creeps in over weeks or months. There are two distinct varieties:

• Mid-portion tendinopathy — pain about 2–6 cm above the heel insertion. This is the more common and the one with the best response to loading rehabilitation.
• Insertional tendinopathy — pain right at the heel where the tendon meets bone. Often associated with a bony prominence (Haglund deformity) and tighter calves. Slightly more stubborn to treat.

Both arise from cumulative overload. Common triggers include a sudden increase in running mileage, a switch to hill training, returning to running after time off without rebuilding gradually, and changes in footwear.

Recognising the symptoms

The story is typically morning stiffness that improves with a few minutes of walking, pain in the first kilometre of a run that warms up, and pain after the run that lingers for hours. As the condition progresses, pain begins to limit running distance and pace. The tendon may visibly thicken in chronic cases.

Treatment: load is medicine

Like other tendinopathies, Achilles tendinopathy responds best to progressive loading. The protocol with the strongest evidence is heavy slow resistance training — heel raises with progressively heavier weights, performed slowly (3 seconds up, 3 seconds down), three times per week. An older protocol (the Alfredson eccentric programme) is also effective. Modifications include performing heel raises off a step for mid-portion tendinopathy, and on a flat surface for insertional tendinopathy.

Concurrent measures include relative rest from running (substitute cycling, pool running), short-term shoe wedges for insertional tendinopathy, and addressing calf and posterior chain flexibility. Most patients improve significantly in 8–12 weeks; full resolution often takes 4–6 months.

Injections and procedures

Cortisone is generally avoided in the Achilles because of an increased rupture risk. PRP has a role in chronic, refractory mid-portion tendinopathy, particularly when combined with ongoing loading. Extracorporeal shock wave therapy is useful for stubborn insertional cases.

Achilles rupture

A complete Achilles tendon rupture is an unforgettable event. The patient typically describes feeling as if they were kicked in the back of the calf, an audible pop, and an immediate inability to push off the foot. It happens most often in “weekend warrior” patients in their 30s to 50s during a sudden push-off — a tennis serve, a basketball jump, a sprint for a bus.

Diagnosis

The clinical diagnosis is reliable: palpable gap in the tendon, positive Thompson test (squeezing the calf produces no foot plantar flexion), and weakness in pushing off. Ultrasound or MRI confirms and characterises the gap.

Conservative vs surgical management

One of the most interesting evidence shifts of the last decade has been towards non-surgical management of Achilles rupture for many patients. With modern functional rehabilitation protocols — early weight bearing in a hinged boot with graded heel wedge reduction — non-surgical management gives similar functional outcomes to surgery for most patients, with no risk of surgical infection or nerve injury. Re-rupture rates are slightly higher with non-surgical management (around 5% vs 2–3%) but acceptable for many patients.

Surgery (open or minimally invasive percutaneous repair) is still preferred for younger elite athletes, when there is significant gap or delayed presentation, and when the patient prefers it after counselling. The recovery pathway is similar in either case.

The recovery

The first two weeks are non-weight-bearing in a boot with the foot in plantar flexion (the heel wedge). Progressive weight bearing begins around week 3 and full weight bearing is usually achieved by week 6. The heel wedge is gradually reduced from week 6 to week 10. Strengthening progresses through bilateral heel raises (weeks 10–12), single-leg heel raises (weeks 12–16), and dynamic work from month 4 onwards. Return to running is typical at 4–6 months; return to cutting and pivoting sport at 6–9 months.

Long-term outlook

Most patients return to their previous level of recreational activity. Many describe a persistent slight weakness on calf raise testing even years later — measurable but rarely noticed in daily life. The contralateral Achilles is at increased risk for the rest of life and benefits from ongoing prevention work.