Persistent tendon pain can be frustrating, especially for active individuals who want to stay consistent with training and exercise. Tendon injuries such as Achilles tendinopathy, plantar fasciitis, and tennis elbow often develop gradually and may take longer to heal than muscle injuries.

In recent years, two advanced treatment options have gained attention in orthopedic rehabilitation and sports medicine: high-intensity laser therapy (Class IV laser) and extracorporeal shockwave therapy (ESWT) .

Both treatments aim to support the body’s natural healing processes and reduce pain. However, they operate through distinct biological mechanisms, and each may be better suited to certain types of injuries.

Understanding how these therapies work can help patients make informed decisions about their treatment options.

Tendons connect muscles to bones and help transfer force during movement. Because they experience repetitive loading during activities like running, jumping, or lifting, tendons are especially vulnerable to overuse injuries.

Many chronic tendon injuries are not purely inflammatory conditions. Instead, they often involve degenerative changes within the tendon , sometimes referred to as tendinopathy.

Common tendon injuries include:

• Achilles tendinopathy

• Patellar tendinopathy (runner’s knee)

• Plantar fasciitis

• Tennis elbow

• Rotator cuff tendinopathy

These injuries may develop when tissues are exposed to stress beyond their capacity to recover.

Shockwave therapy uses acoustic pressure waves to stimulate healing within injured tissue.

These waves travel through the skin and interact with the damaged tendon. The mechanical stimulation creates small micro-stresses in the tissue that activate the body’s natural healing response.

Research suggests that shockwave therapy may stimulate:

• Growth factor release

• New blood vessel formation

• Collagen remodeling

• Breakdown of calcifications and scar tissue

Because of these effects, shockwave therapy is often used for chronic tendon conditions that have not responded to traditional treatments.

High-intensity laser therapy uses light energy to stimulate cellular activity through a process called photobiomodulation.

When laser light penetrates the tissue, it interacts with mitochondria inside cells. This increases ATP (adenosine triphosphate) production, the energy source cells use for repair and regeneration.

Laser therapy may help:

• Increase circulation

• Reduce inflammation

• Stimulate cellular metabolism

• Decrease nerve sensitivity and pain

Laser therapy is commonly used for muscle injuries, joint irritation, and inflammatory conditions , although it can also support tendon healing.-

Although both treatments support healing, they do so in different ways.

Feature Shockwave Therapy High-Intensity Laser Therapy

Energy Type Acoustic pressure waves Light energy

Main Biological Effect Stimulates tissue regeneration Enhances cellular metabolism

Best for Chronic tendon injuries Pain & inflammation

Sensation Mild mechanical tapping Gentle warming sensation

Typical Treatment Time 5–10 minutes 5–15 minutes

Both treatments are non-invasive and typically performed in an outpatient setting.

Shockwave therapy is frequently used for chronic tendon injuries where healing has stalled .

Examples include:

• Plantar fasciitis

• Achilles tendinopathy

• Tennis elbow/Golfer’s elbow

• Patellar tendon injuries

• Calcific shoulder tendinitis

These conditions often involve degenerative tendon tissue rather than acute inflammation. Shockwave therapy can help stimulate tissue remodeling and promote healing.

Laser therapy may be particularly helpful when pain and inflammation are prominent symptoms .

Examples include:

• Muscle strains

• Ligament sprains

• Joint irritation

• Nerve-related pain

• Acute injuries

Because laser therapy can reduce pain and inflammation, it may allow patients to participate more comfortably in rehabilitation exercises.

In many cases, the two treatments are complementary rather than competing options .

For example, a patient with Achilles tendinopathy might receive:

• Shockwave therapy to stimulate tendon remodeling

• Laser therapy to reduce inflammation and pain

This combined approach can help address both the biological healing process and symptom management .

While advanced treatments can support healing, they are most effective when combined with rehabilitation.

Physical therapy focuses on improving:

• Strength

• Mobility

• Tendon load capacity

• Movement mechanics

For musculoskeletal injuries, progressive loading exercises are often essential for long-term recovery.

Without addressing these underlying factors, symptoms may return even if pain temporarily improves.

The most appropriate treatment depends on several factors, including:

• The type of injury

• How long symptoms have been present

• The severity of tissue irritation

• Activity level and training goals

A thorough evaluation helps determine whether you qualify for either treatment and, if so, which approach is most appropriate.

Both shockwave therapy and high-intensity laser therapy can be valuable tools for managing tendon injuries.

Shockwave therapy is often used for chronic tendon conditions that require stimulation to restart the healing process, while laser therapy can help reduce inflammation and improve cellular activity .

When combined with targeted physical therapy, these treatments may help patients recover more effectively and return to the activities they enjoy.

If you’re dealing with persistent tendon pain or an injury that hasn’t improved with rest, a thorough evaluation can help determine the most appropriate treatment approach.

At Tualatin Valley Physical Therapy , we work with active individuals to develop personalized rehabilitation plans focused on restoring strength, improving movement, and helping patients return safely to activity.

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• Is laser therapy or shockwave therapy better for tendon injuries?

  Both treatments can support tendon healing, but they work through different mechanisms.
  Shockwave therapy is often used for chronic tendon injuries because it stimulates tissue regeneration and collagen remodeling. High-intensity laser therapy is frequently used to reduce pain and inflammation , which can make rehabilitation exercises easier to perform.

  The best treatment depends on the specific condition, how long symptoms have been present, and individual activity goals.

• Does shockwave therapy hurt?

  Shockwave therapy can create a mild tapping or pulsing sensation during treatment. Some patients describe temporary discomfort during the procedure, especially in sensitive areas.

  However, treatments are short (usually 5–10 minutes), and the intensity can be adjusted to maintain comfort.

• Is high-intensity laser therapy painful?

  No. Most patients report a gentle warming sensation during laser therapy treatments. The procedure is non-invasive and generally comfortable.

• How many treatments are usually needed?

  Treatment plans depend on the severity and duration of the injury. Some patients experience improvement earlier, while chronic conditions may require a longer treatment plan. These treatments are combined with physical therapy for optimal results.

• Can these treatments replace physical therapy?

  No. Shockwave therapy and laser therapy are supportive treatments , not replacements for rehabilitation.

  For tendon injuries, progressive strengthening exercises and movement correction are often necessary to restore tendon capacity and prevent recurrence.