Reassessing Achilles Tendinopathy Rehabilitation
PODIATRIST CHELTENHAMPODIATRIST COTSWOLDSPODIATRIST GLOUCESTERSHIRE
7/31/20263 min read
The Evolution of Achilles Tendinopathy Rehabilitation
Achilles tendinopathy is one of the most common overuse injuries affecting athletes and physically active individuals. Historically, rehabilitation focused primarily on eccentric loading exercises, particularly the Alfredson heel drop protocol, which demonstrated significant improvements in pain and function.
While eccentric exercises remain an effective treatment option, advances in tendon research have shifted rehabilitation towards a broader, more individualised approach centred on progressive tendon loading rather than reliance on a single exercise strategy.
Progressive Loading: The Cornerstone of Modern Rehabilitation
Current evidence suggests that the specific type of exercise may be less important than ensuring the Achilles tendon is exposed to an appropriate, progressively increasing mechanical load over time. Progressive loading stimulates tendon adaptation, improves calf muscle strength, restores function, and helps prepare the tendon for the demands of daily activity and sport.
Modern rehabilitation programmes typically adjust loading according to the individual's symptoms, stage of recovery, and functional goals. Rather than prescribing one exercise protocol for every patient, clinicians can modify exercise intensity and type as rehabilitation progresses.
The Role of Isometric Exercises
For individuals experiencing significant pain, isometric exercises can provide an effective starting point. These exercises involve muscle contraction without substantial joint movement, allowing the tendon to be loaded while minimising excessive strain.
Although isometric loading was initially believed to produce reliable pain relief, more recent research suggests that this analgesic effect varies between individuals. Nevertheless, isometric exercises remain valuable for introducing tendon loading early in rehabilitation, maintaining calf muscle activation, and improving confidence to begin movement while symptoms remain irritable.
Heavy Slow Resistance Training
Heavy Slow Resistance (HSR) training has emerged as another highly effective rehabilitation strategy. This approach combines relatively heavy loads with slow, controlled movements to progressively strengthen both the calf musculature and the Achilles tendon.
Research has demonstrated that HSR produces improvements in pain and function comparable to traditional eccentric programmes, while some patients find it easier to adhere to. Although tendon structure may adapt over time, improvements in symptoms do not always correspond with measurable structural changes, highlighting that functional recovery is not solely dependent on imaging findings.
Exercise Selection Should Match the Patient
Rather than viewing eccentric loading, isometric exercises, and HSR as competing approaches, current evidence supports selecting each according to the patient's presentation.
For example:
Isometric exercises may be appropriate during periods of high pain sensitivity.
Heavy slow resistance can be introduced as symptoms improve and greater loading is tolerated.
Functional strengthening, plyometric exercises, and sport specific loading become increasingly important during later rehabilitation to prepare the tendon for return to running and athletic performance.
This progressive continuum allows rehabilitation to evolve alongside the patient's recovery rather than relying on a fixed protocol.
It is also crucial to get the diagnosis correct before getting any treatment, so book your assessment at The Leg Lab now...
The Role of Extracorporeal Shockwave Therapy (ESWT)
Extracorporeal Shockwave Therapy (ESWT) has become an increasingly recognised adjunctive treatment for chronic Achilles tendinopathy, particularly when symptoms persist despite an appropriate rehabilitation programme. ESWT is thought to stimulate tissue healing, influence pain mechanisms, and encourage tendon remodelling, although its exact mechanisms remain incompletely understood.
Current evidence suggests that ESWT is most effective when combined with a structured progressive loading programme rather than used in isolation. Exercise remains the primary treatment, while ESWT may enhance pain reduction and functional improvement in selected patients, particularly those with chronic mid portion Achilles tendinopathy. It should therefore be considered a complementary treatment rather than a replacement for rehabilitation exercises.
Conclusion: A Comprehensive, Evidence Based Framework
The management of Achilles tendinopathy has evolved considerably over the past two decades. While eccentric loading remains an effective treatment, it is no longer regarded as the sole rehabilitation strategy. Instead, contemporary evidence supports an individualised, progressive loading programme that may incorporate isometric exercises, heavy slow resistance training, functional strengthening, and sport specific rehabilitation according to the patient's stage of recovery.
Where appropriate, adjunctive treatments such as ESWT may further improve outcomes when integrated alongside an optimal loading programme. By combining evidence based exercise prescription with individualised clinical decision making, clinicians can maximise pain reduction, restore function, and support a safe return to activity while reducing the risk of recurrence.