Achilles tendon rupture: how physiotherapy can make a difference in recovery

Achilles tendon rupture is one of the most disabling lower limb injuries, and can significantly impair the ability to walk, run, jump and perform everyday tasks. Although it is more common in physically active people, it can occur at any age and during seemingly mundane movements.

The initial approach may be surgical or conservative, according to the characteristics of the lesion and individual clinical factors. Regardless of the option chosen, functional recovery depends to a large extent on a properly structured rehabilitation programme. Current scientific evidence supports the fundamental role of physiotherapy in the recovery of mobility, strength, stability and confidence, contributing to a progressive and safe return to daily activities and sports.

What is an Achilles tendon rupture?

The Achilles tendon is the largest and one of the strongest tendons in the human body. Located in the back of the leg, it connects the gastrocnemius and soleus muscles to the calcaneus, the heel bone. This structure transmits the muscular force required for plantar flexion of the ankle.

Thanks to the action of the Achilles tendon, we are able to perform essential movements such as walking, running, jumping, climbing stairs or raising the body onto our tiptoes.

Despite its high strength, the tendon can rupture when subjected to a sudden and excessive load or when it presents degenerative changes accumulated over time. The majority of ruptures occur during activities involving rapid accelerations, sudden changes of direction, jumping or high-intensity running.

What happens after an Achilles tendon rupture?

When a rupture occurs, the tendon's ability to transmit force between the leg muscles and the foot is compromised, resulting in significant functional limitations in the lower limb.

Among the most frequent changes are:

• Significant loss of muscle strength;
• Reduced ankle mobility;
• Changes to gait pattern;
• Reduced balance and coordination;
• Reduction in functional capacity;
• Reduced tolerance for physical exertion;
• Reduced confidence in using the injured limb.

Even after biological healing of the tendon, some of these deficits may persist for several months and, in certain cases, for longer periods, especially when the recovery of strength and function is not properly worked on.

Why is physiotherapy so important in recovery?

Physiotherapy is a central component of rehabilitation following an Achilles tendon rupture. Regardless of whether the initial approach was surgical or conservative, functional recovery involves a progressive and appropriately dosed reintroduction of movement, load, and therapeutic exercise.

Recovery of ankle mobility

Following the injury and during the initial protection phase, joint stiffness and limited ankle range of movement frequently occur. Through specific mobility exercises and rehabilitation strategies suited to the recovery phase, physiotherapy makes it possible to progressively recover the range of movement necessary for walking, going up stairs and carrying out daily activities.

Adequate ankle mobility also helps to reduce the need for compensations in other joints, namely the knee, hip and lumbar spine.

Recovery of muscle strength

Loss of strength in the gastrocnemius and soleus muscles is one of the most frequent consequences following an Achilles tendon rupture. Progressive strengthening is essential to recover propulsive ability, improve muscle endurance and bring the function of the two lower limbs closer together.

Scientific research demonstrates that strength deficits can persist for several months and, in some cases, for years following injury. For this reason, muscle strengthening must be a priority throughout the different phases of rehabilitation, with progression adjusted to the individual's capacity and the tendon's response to load.

Gait improvement

Following an Achilles tendon rupture, gait abnormalities frequently occur due to pain, fear of bearing weight on the affected limb, or decreased muscle strength.

Physiotherapy makes it possible to work progressively on the gait pattern, promoting a more efficient distribution of loads and reducing compensatory strategies that can increase the demand on other structures of the musculoskeletal system.

Improved balance and proprioception

The Achilles tendon takes part in the neuromuscular control of the lower limb and in the transmission of the forces required for stability during movement. Following injury, balance, coordination and postural control may be compromised.

For this reason, rehabilitation programmes include specific exercises designed to improve balance, proprioception, motor coordination and ankle stability, progressively and appropriately to each person's functional demands.

Stimulation of tendon adaptation to load

For many years, prolonged immobilisation was considered a central strategy to promote tendon recovery. Currently, available evidence supports an approach based on mobilisation and the progressive and controlled introduction of load, respecting the different phases of healing.

Gradual exposure to mechanical loading can contribute to the organisation and adaptation of collagen fibres and to the development of the tendon's mechanical properties. Therefore, contemporary rehabilitation programmes favour the careful progression of movement and loading, in accordance with clinical progress and individual tolerance.

Reduction of the risk of re-injury

The fear of a re-rupture is a common concern during recovery. Physiotherapy can help reduce factors associated with the risk of re-injury through progressive strengthening, functional training, education on load management and the assessment of relevant biomechanical factors.

As the tendon is progressively exposed to more demanding loads, its capacity to meet the demands of everyday and sporting activities can be gradually developed.

Restoration of confidence

Recovery after an Achilles tendon rupture does not only involve physical aspects. The psychological component can also influence the rehabilitation process. Fear of running, jumping or performing similar movements to those associated with the injury frequently arises.

Gradual exposure to movement and exercise, accompanied by an appropriate development of physical capacity, can help to restore confidence in using the injured limb and reduce the fear associated with more demanding activities.

Safe return to physical activity and sport

One of the goals of rehabilitation is to progressively prepare the tendon and the entire lower limb to respond to the demands of physical activity and, where applicable, sport.

Physiotherapy allows the gradual development of strength, muscle power, endurance, agility, the ability to change direction and impact tolerance. The progression of these capabilities must be individualized and based on clinical response, achieved function and the specific demands of the activity to which the person intends to return.

Return to function following an Achilles tendon rupture

An Achilles tendon rupture has a significant impact on functional capacity, but the outcome can be favourable when there is proper and closely monitored rehabilitation.

Functional recovery requires time, consistency, and an individualised progression of exercises and loads. The pace of evolution varies from person to person and depends on several factors, including the characteristics of the injury, the initial approach, physical condition, and each individual's functional or sporting demands.

With expert guidance, rehabilitation can help restore mobility, strength, balance and functional capacity, supporting a progressive return to daily activities and, where applicable, to sporting practice.

Regardless of the initial approach adopted, physiotherapy plays an important role throughout the recovery process. Through an individualised intervention based on the available scientific evidence, it is possible to work on ankle function, muscle strength, neuromuscular control, confidence and the lower limb's ability to respond to different demands.

Understanding Achilles tendon rupture recovery from an integrative perspective

Recovery following an Achilles tendon rupture should be understood as a progressive process, in which tendon healing represents only one dimension of recovery. Mobility, strength, functional capacity, neuromuscular control, load tolerance and confidence in movement are equally relevant for restoring lower limb function.

A structured rehabilitation programme allows these different dimensions to be monitored in an integrated way, adjusting the progression of exercises and loads to each person's needs and progress. Consistency throughout the process and appropriate load management are important elements for a sustained functional recovery and a gradual return to activities that are part of daily life or sports.