Tendinopathy Stages

Upper Limb

Overview

Tendinopathy represents a continuum of pathological changes in tendon structure and function, progressing through distinct stages from reactive tendinopathy through to terminal degenerative changes. Understanding these stages is critical for appropriate management, as treatment strategies differ significantly depending on the phase of pathology present. Early intervention in reactive stages can prevent progression to chronic degenerative tendinopathy.

Pathophysiology

Tendinopathy progresses through three primary stages: (1) Reactive tendinopathy occurs as an acute response to increased load, characterized by increased proteoglycan content, swelling, and altered water content without structural fiber disruption—this is potentially reversible with appropriate load management. (2) Tendon dysrepair represents a failed healing response with disorganized collagen fiber arrangement, increased neovascularization, and altered matrix proteins; this stage shows mixed potential for recovery depending on intervention timing. (3) Degenerative tendinopathy features permanent structural changes including frank fiber disorganization, lipid accumulation, calcification, and mucoid degeneration with reduced cellularity—this stage involves irreversible changes though function can improve with load optimization. The Cook and Purdam continuum model integrates load-capacity imbalance as the primary driver, where relative overload in reactive stages can reverse with appropriate management, but chronic underload or continued excessive load promotes progression toward degeneration.

Patient Education

Tendinopathy exists on a spectrum of structural changes rather than as a single disease entity; early recognition of your stage and appropriate load management can prevent progression to chronic degeneration, making early intervention critical.

Typical Presentation

Site

Common sites include Achilles tendon, patellar tendon, rotator cuff tendons (supraspinatus), lateral elbow epicondyle (extensor carpi radialis brevis), medial elbow epicondyle, wrist flexors/extensors, and plantar fascia

Quality

Pain described as dull ache, sharp on movement, stiffness, or burning sensation; reactive stages present with activity-related pain; degenerative stages often present with persistent baseline pain

Intensity

Reactive: mild to moderate pain (3-5/10) primarily with aggravating activities; dysrepair: moderate pain (5-7/10) with variable daily patterns; degenerative: variable pain (2-7/10) with less predictable relationship to activity

Aggravating

Reactive stage: specific loading patterns, rapid load increases, eccentric movements; dysrepair: variable triggers, morning stiffness improvement, pain with continued activity; degenerative: minimal loading tolerance, morning stiffness, pain with light activity

Relieving

Reactive: relative rest, ice application, reduced loading; dysrepair: modified activity, gentle movement, load management; degenerative: activity modification, bracing, consistent gentle loading

Associated

Swelling and palpable thickening (reactive/dysrepair), reduced strength and endurance, stiffness particularly in morning, muscle guarding, reduced range of motion, weakness in muscles distal to tendon, functional limitations specific to tendon function

Orthopaedic Tests

Test descriptions are written with AI assistance from standard clinical texts. Where a test lists Sources, its description has been checked against them; those sources are independent and do not endorse OsteoKit. Accuracy figures and grades (A–D) appear only when checked against the published study; tests without one are marked “No accuracy study”.

Further reading: full test procedures are described in standard clinical examination texts, e.g. Magee & Manske, Orthopedic Physical Assessment (7th ed.), and Cook & Hegedus, Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd ed.).

No accuracy study

Ultrasound Imaging Assessment

Procedure

Ultrasound of the tendon by a sonographer or trained clinician.

Positive Finding

Thickening, reduced echogenicity, loss of fibre pattern or increased blood flow (neovascularisation).

Interpretation

Structural changes are common in people without pain and do not match symptoms closely, so imaging should support, not replace, the clinical findings. Useful when a tear or another diagnosis is suspected.

Sources

  • RelatedKlauser et al., 2013, Seminars in Musculoskeletal Radiology; Archambault et al., 2008, Journal of Ultrasound in Medicine
Questionnaire

Patient-Reported Outcome Measures (VISA Questionnaires)

Procedure

The patient completes a tendon-specific questionnaire, such as the VISA-A (Achilles) or VISA-P (patellar tendon).

Positive Finding

Lower scores mean more symptoms and less function.

Reference: Silbernagel et al., 2011, British Journal of Sports Medicine; Robinson et al., 2001, American Journal of Sports Medicine

Interpretation

Measure severity and track change with treatment. They do not identify a stage of tendinopathy.

Sources

No accuracy study

Tendon Palpation & Tenderness Assessment

Procedure

Palpate along the tendon and its insertion, comparing with the other side, noting thickening, nodules and tenderness.

Positive Finding

Localised tenderness or thickening that matches the patient's pain.

Interpretation

Tenderness supports tendinopathy when it matches the painful site, but tendons are often tender in people without symptoms. Tendinopathy is a load-related condition, not mainly an inflammatory one.

Sources

No accuracy study

Isometric Strength and Pain Testing

Procedure

Test the muscle–tendon unit against resistance in mid-range, comparing sides and recording pain and strength (a hand-held dynamometer helps).

Positive Finding

Pain localised to the tendon, reduced strength, or both.

Interpretation

Records pain and capacity to guide loading and track progress. The tendinopathy continuum (reactive, dysrepair, degenerative) is a useful model, but the stage cannot be read reliably from strength testing.

Sources

No accuracy study

Tendon Load Tests (Hop or Repeated Loading)

Procedure

Apply tendon-specific loads that increase in demand (for example single-leg calf raises then hops for the Achilles; single-leg decline squats then hops for the patellar tendon) and record pain at the tendon.

Positive Finding

Pain localised to the tendon that increases as load increases.

Interpretation

Load-related pain localised to the tendon is the key clinical feature of tendinopathy. Pain the next morning helps judge how the tendon tolerated activity and guides progression.

Sources

No accuracy study

Load Tolerance Assessment

Procedure

Find the highest load or number of repetitions the patient can manage with acceptable pain (for example no more than mild pain that settles by the next day).

Positive Finding

Not a test with a positive result: it sets the starting level for rehabilitation.

Interpretation

Guides how much loading to prescribe and tracks progress. ('Tendinopathy Severity Index', the name previously shown, is not a recognised tool.)

⚠ Red Flags

  • •Acute severe pain with functional loss following trauma suggesting acute rupture
  • •Signs of infection including warmth, erythema, systemic fever in tendon region
  • •Complete loss of function with palpable defect suggesting complete rupture
  • •Neurological symptoms suggesting nerve compression secondary to tendon swelling
  • •Systemic symptoms suggesting rheumatological or inflammatory conditions (rheumatoid arthritis, seronegative spondyloarthropathies)
  • •Unremitting night pain unrelated to activity suggesting inflammatory or malignant pathology

⚡ Yellow Flags

  • •Catastrophizing beliefs about pain and prognosis
  • •Fear-avoidance behavior leading to excessive activity restriction and deconditioning
  • •Poor adherence to activity modification or rehabilitation programs
  • •Significant psychological distress or mood disorders affecting motivation
  • •Work-related pressure or concerns about job security exacerbating pain perception
  • •Pending litigation or compensation claims associated with injury
  • •Excessive focus on imaging findings without correlation to clinical presentation
  • •Multiple pain sites suggesting central sensitization or systemic factors

Osteopathic Techniques

Reference page

This page describes a model, not a diagnosis: tendinopathy is seen as a continuum of pathology, and treatment is matched to where the tendon sits on it. For techniques, see the page for the tendon involved.

Rotator Cuff Tendinopathy →Tennis Elbow →Gluteal Tendinopathy →Patellar Tendinopathy →Achilles Tendinopathy →

Rehabilitation Exercises

Gentle pendulum circles (shoulder/hip tendinopathy)

Range of MotionBeginner

Static hold stretching of affected muscle-tendon unit (avoid ballistic stretching in reactive stage)

StretchingBeginner

Isometric strengthening in neutral positions (early stage)

StrengtheningBeginner

Eccentric loading progressions (dysrepair/degenerative stages)

StrengtheningIntermediate

Single-leg stance with upper limb support (lower limb tendinopathy)

BalanceIntermediate

Scapular stabilization exercises (upper limb tendinopathy)

PosturalBeginner

Progressive resistance exercises with controlled tempo (dysrepair stage)

StrengtheningIntermediate

Active-assisted range of motion through available pain-free range

Range of MotionBeginner

Proprioceptive training on unstable surface (later stages)

BalanceAdvanced

Progressive neural gliding techniques for associated nerve structures

StretchingIntermediate

Core stabilization progressions (addressing proximal control deficits)

PosturalIntermediate

Modified aerobic activity respecting tendon load tolerance

CardiovascularIntermediate

Referral Criteria

  • •Suspected acute rupture or complete tear requiring surgical assessment
  • •Signs of infection requiring medical assessment and possible antimicrobial treatment
  • •Failure to progress or deterioration over 6-8 weeks despite appropriate conservative management
  • •Suspected systemic or rheumatological condition requiring medical investigation
  • •Neurological signs suggesting nerve involvement requiring specialist assessment
  • •Tendinopathy unresponsive to conservative care where injection therapy (corticosteroid, platelet-rich plasma, stem cell) might be considered
  • •Need for advanced imaging (ultrasound, MRI) to stage pathology and guide treatment
  • •Psychological factors significantly limiting rehabilitation adherence or pain modulation
  • •Degenerative tendinopathy with recurrent pain and functional limitation despite optimal conservative management, considering surgical tenodesis or debridement