The term "tendinitis" is commonly used to describe any tendon pain — but today's sports medicine science prefers the broader term tendinopathy. Understanding the difference is clinically important: it shapes the treatment approach. This complete guide covers the types of tendinopathy, symptoms, diagnosis, risk factors, and treatment options available through sports medicine in Quebec.
What Is Tendinopathy?
A tendon is a dense fibrous tissue that connects muscle to bone, transmitting the mechanical forces needed for movement. Composed mainly of type I collagen, tendons are designed to withstand heavy loads — but they are not indestructible.
Tendinitis (or tendinitis) strictly refers to acute inflammation of the tendon. However, histological studies show that the majority of chronic tendon pain presents without significant inflammation. Instead, it results from a degenerative process called tendinosis: disorganized collagen fibers, cellular apoptosis, and pathological neovascularization.
Tendinopathy is the umbrella term that encompasses:
- Tendinitis (acute inflammatory phase, often transient)
- Tendinosis (chronic degeneration of fibers without active inflammation)
- Partial tears and repetitive microtraumas
This distinction matters because a degenerative process doesn't respond to anti-inflammatory treatment the same way acute inflammation does. Treatment must be tailored accordingly.
Common Types of Tendinopathy
Tendinopathy can affect virtually any tendon in the body, but certain locations are significantly more common:
Shoulder — Rotator Cuff
Rotator cuff tendinopathy is one of the most common shoulder conditions. It affects the tendons of the supraspinatus, infraspinatus, subscapularis, or teres minor. Pain is typically felt on the lateral shoulder and worsens with overhead movements or carrying loads. In athletes, throwing sports, volleyball, and swimming are major risk factors.
Elbow — Lateral Epicondylitis (Tennis Elbow)
Lateral epicondylitis, commonly called "tennis elbow," is a tendinopathy of the wrist extensor muscles at their insertion on the lateral epicondyle. It presents as pain on the outer elbow, aggravated by gripping and wrist extension. Despite its name, it frequently affects people whose work involves repetitive movements (computer work, carpentry).
Knee — Patellar Tendon
Patellar tendinopathy, nicknamed "jumper's knee," affects the tendon connecting the kneecap to the tibia. It is common in athletes practicing sports with repetitive jumping (basketball, volleyball, athletics). Pain is localized below the kneecap and worsens with squats, descending stairs, and athletic activities.
Heel — Achilles Tendon
Achilles tendinopathy is one of the most frequent tendon conditions in runners. It can affect the mid-body of the tendon (mid-portion tendinopathy) or its insertion on the calcaneus (insertional tendinopathy). Pain is localized at the heel and back of the ankle, often most intense in the morning or at the start of activity.
Other Common Locations
- Hip: gluteus medius tendinopathy (greater trochanteric tendinopathy)
- Wrist: De Quervain's tenosynovitis (thumb tendons)
- Ankle: peroneal or posterior tibial tendinopathy
Symptoms and Diagnosis
Tendinopathies present a relatively characteristic clinical picture, though variable by location and stage:
Typical Symptoms
- Localized pain at the tendon, often precise on palpation
- Morning stiffness or stiffness at activity onset, easing after warm-up
- Activity-related pain that increases with intensity
- Rest pain in advanced stages
- Sometimes local swelling or palpable thickening of the tendon
Clinical Diagnosis
Diagnosis begins with a clinical examination: detailed history, tendon palpation, and specific loading tests. A sports medicine physician can diagnose most cases without imaging. However, imaging is useful to confirm the diagnosis, assess severity, and guide therapeutic procedures.
Musculoskeletal Ultrasound
MSK ultrasound is the imaging of choice for tendinopathies. It allows real-time visualization of tendon structure, identifying areas of degeneration, partial tears, and pathological neovascularization (Doppler). It is also essential for guiding therapeutic injections with precision. Learn more in our guide on musculoskeletal ultrasound.
MRI
MRI is reserved for complex cases, suspected complete tears, or pre-surgical assessment. It provides superior soft tissue characterization but is more costly and less accessible than ultrasound.
Risk Factors
Several factors increase the risk of developing tendinopathy:
Activity-Related Factors
- Mechanical overload: too-rapid increase in training volume or intensity
- Training errors: inadequate warm-up, insufficient recovery, hard surfaces
- High-risk sports: throwing sports, jumping sports, racket sports, running
- Poor technique or inappropriate equipment
Occupational Factors
- Repetitive upper limb work (assembly, keyboard, tools)
- Prolonged static postures under load
- Mechanical vibrations
Individual Factors
- Age: tendon mechanical properties decline with aging
- Sex: some tendinopathies are more common in women (insertional Achilles)
- Joint hypermobility or biomechanical deficits (flat feet, hip dysfunction)
- Metabolic conditions: diabetes, dyslipidemia, hypothyroidism — impair collagen quality
- Certain medications: fluoroquinolones (antibiotics), prolonged corticosteroid use
Treatment Options
Tendinopathy management is multimodal. There is no universal solution — treatment is individualized based on location, stage, physical condition, and patient goals.
Relative Rest and Activity Modification
Complete rest is rarely indicated and can even be detrimental long-term. Relative rest — maintaining activities at tolerable pain levels (≤3/10) — is preferred. The goal is to keep mechanical loads below the pain threshold while preserving fitness.
Physiotherapy and Eccentric Exercise
Physiotherapy is the cornerstone of tendinopathy treatment. Eccentric exercises (muscle contraction under lengthening) have demonstrated solid efficacy, particularly for the Achilles and patellar tendons. A supervised progressive rehabilitation program remodels the tendon and restores load capacity.
Cortisone Injection
Cortisone injections can provide short-term symptom relief by reducing peritendinous inflammation. They are useful to enable progress in physiotherapy, but do not modify the underlying degenerative process. Repeated injections into the tendon itself can weaken the tissue — they are therefore administered with caution and preferably under ultrasound guidance. Learn more about cortisone injections.
PRP Injection (Platelet-Rich Plasma)
PRP is a biological therapeutic option that concentrates the patient's own platelets to inject growth factors directly into the injured tendon, stimulating tissue repair. Scientific evidence is promising for certain chronic resistant tendinopathies. See our guide on PRP injections for details.
Extracorporeal Shockwave Therapy
Shockwave therapy uses high-energy acoustic impulses to stimulate tendon healing. It is particularly indicated for chronic calcifying tendinopathies (shoulder) and resistant insertional tendinopathies. Good efficacy with few side effects.
Other Approaches
- Orthotics and appropriate footwear: biomechanical correction to reduce overload
- Manual therapy: mobilization and massage of peritendinous structures
- Electrotherapy (ultrasound, TENS): limited evidence but used as adjunct
- Surgery: reserved for rare refractory cases after 6-12 months of well-conducted conservative treatment
Role of Musculoskeletal Ultrasound in Diagnosis
Musculoskeletal ultrasound (MSK) has transformed the management of tendinopathies. Its advantages are numerous:
- Real-time dynamic imaging: tendon assessment during movement and under stress
- Accessibility and speed: available in the clinic, radiation-free
- Guidance of therapeutic procedures: cortisone or PRP injections placed precisely on target
- Follow-up: before/after treatment comparison to assess response
- Doppler: detection of pathological neovascularization (marker of degenerative activity)
At Clinique Sport Santé Laurentides, Dr. Labrecque-Sauvé performs MSK ultrasound during each consultation requiring tendon assessment, enabling informed clinical decisions and precise therapeutic procedures in the same appointment.
Prevention and Long-Term Management
Tendinopathies tend to recur if causative factors are not corrected. Long-term management rests on several principles:
Gradual Load Progression
The 10% per week rule (do not increase training volume by more than 10% per week) is a practical guideline to avoid overload. This applies to running, cycling, strength training, and racket sports.
Preventive Strength Training
Strong muscles reduce loads transmitted to tendons. A regular strengthening program targeting at-risk muscle groups (hamstrings, glutes, calves) is a major preventive investment, especially for athletes.
Metabolic Factor Management
In patients with diabetes, dyslipidemia, or other metabolic conditions, optimizing underlying medical management improves collagen quality and tendon healing capacity.
Ergonomics and Equipment
For work-related tendinopathies, a workstation ergonomic assessment can identify and correct repetitive mechanical overloads. Sports equipment (shoes, racket, bike setup) should be adapted to morphology and performance level.
Recognizing Early Warning Signs
Learning to recognize morning stiffness or activity-onset pain as alarm signals allows early intervention, before tendinopathy becomes chronic. If these symptoms persist for more than 2 weeks, medical consultation is recommended.
Frequently Asked Questions About Tendinopathy
What is the difference between tendinitis and tendinopathy?
Tendinitis strictly refers to acute tendon inflammation, present mainly in early phases. Tendinopathy is the broader term that also includes tendinosis — chronic fiber degeneration without active inflammation, more common in persistent tendon pain. In clinical practice, tendinopathy is now preferred as it is more precise.
How long does tendinopathy last?
Acute tendinopathies that are well managed can resolve in 4 to 8 weeks. Chronic forms, especially those that have evolved for months without adequate treatment, may require 3 to 6 months of structured rehabilitation. Duration depends on location, stage, treatment adherence, and individual risk factors.
Can tendinopathy heal without treatment?
Mild acute tendinopathies may improve spontaneously with relative rest. However, chronic forms tend to persist or worsen without active management. Medical evaluation establishes an appropriate treatment plan and helps avoid complications such as tendon rupture.
Is PRP effective for tendinopathy?
Scientific evidence on PRP for tendinopathies is broadly positive, particularly for lateral epicondylitis and chronic Achilles tendinopathy. Efficacy varies by location and stage. PRP is generally considered when well-conducted conservative treatments (physiotherapy, exercises) have not yielded sufficient results after 3-6 months. See our guide on PRP injection.
How can I book an appointment for tendinopathy in the Laurentians?
Clinique Sport Santé Laurentides offers sports medicine consultations including clinical evaluation, MSK ultrasound, and tendinopathy management. To book an appointment, use our online booking system.
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