Tendinopathy Treatment
Principles of Therapy
- Identification & elimination of the cause of tendinopathy
- Behavior modification to minimize or eliminate sources of continuing irritation
- Specialist referral for appropriate follow up care
- To reduce pain & to return function
Pharmacotherapy
Analgesics & Nonsteroidal anti-inflammatory drugs (NSAIDs)
- Effectively relieve pain & inflammation
- It is unclear whether NSAIDs are more effective than other analgesics since majority of chronic tendinopathies are not inflammatory
- Topical administration of NSAIDs, through gels or patches, has also been used to reduce tendon pain
- Eliminates the risk of gastrointestinal (GI) bleeding associated w/ systemic use
- Analgesics & NSAIDs are good options for short-term (5-7 days) treatment of pain
- Studies showed efficacy of NSAIDs in the treatment of acute shoulder tendonitis but not w/ lateral epicondylitis & Achilles tendinopathy
- No clear evidence on the efficacy of NSAIDs in the long-term treatment of chronic tendinopathy
- There are no evidence-based guidelines to recommend the use of local corticosteroids injection in tendinopathy
- Effectiveness & risk of corticosteroid treatment vary w/ the duration of symptoms & route of drug delivery
- Locally injected corticosteroids are more effective than oral NSAIDs for relief in the acute phase of tendinopathy pain; however, they do not alter long-term outcomes
- Strong evidence support its use in relieving pain for up to 6 weeks but there is no evidence to support its benefit in long-term treatment beyond 6 months
- May inhibit healing & decrease the tensile strength of the tissue which may predispose to spontaneous rupture
- Corticosteroids should not be injected into major tendons like Achilles tendon & patellar tendon, which may be at risk of spontaneous rupture if already weakened
- Risks associated w/ corticosteroid injections can be decreased by injecting under fluoroscopic guidance to ensure that the injection is around the tendon & not intratendinosus
- Studies showed that the administration of glyceryl trinitrate patches over affected tendons deliver nitric oxide which acts as cellular messenger & helps in tendon healing
- It also provides pain relief & improves function in patients w/ lateral epicondylitis, Achilles tendinopathy & rotator cuff tendinopathy
- Larger multicenter trials are needed to validate this treatment option
Non-Pharmacological Therapy
Relative Rest
- Refers to avoidance of abuse & not absence of activity
- Appropriate treatment during the acute phase of tendinopathy pain
- Prevents ongoing damage, decreases pain & promotes tendon healing
- Avoid activities that are heavy & may aggravate pain
- Most physicians encourage continuation of daily activities as long as it does not worsen the pain
- Tensile loading of the tendon enhances collagen production & promotes normal alignment of newly formed collagen fibers
- Avoid complete immobilization to prevent muscle atrophy & deconditioning
- Brief sling immobilization is a suggested treatment for calcific tendinopathy
- Prolonged immobilization may result in adhesive capsulitis
- No specific recommendation for the length of rest needed
- Effective for short-term pain relief
- Reduces pain & swelling in acute inflammatory tendinopathies by blocking the inflammatory response
- Slows the release of blood & proteins from the surrounding blood vessels by decreasing tissue metabolism
- Based on a recent systematic review of cryotherapy, application of ice through wet towel for 10-minutes is very effective
- Appropriate during the acute phase of tendinopathy pain
- Performed after the pain has subsided
- Helps promote the formation of new collagen
- Eccentric strengthening is an effective therapy for tendinopathies
- A 12-week course of eccentric strengthening program was more effective than the traditional concentric strengthening exercises for treating patellar & Achilles tendinopathy
- There is improvement in pain levels, & thinning & normalization of the tendons on ultrasound & magnetic resonance imaging (MRI) of patients w/ Achilles tendinopathy
- Showed success in treating lateral epicondylitis by improvement in pain, strength & function
- More effective when combined w/ static stretching exercises, therapeutic ultrasonography, extracorporeal shock wave therapy (ESWT), ionophoresis, or low level laser therapy
- A 12-week course of eccentric strengthening program was more effective than the traditional concentric strengthening exercises for treating patellar & Achilles tendinopathy
- Perform stretching exercises following activity, when muscles are warm
- Stretching before an activity does not prevent injury & may lead to decrease in muscle strength
- Regular stretching should be done 3-5 days/week
- Stretching w/ deep friction massage of the gastrocnemius-soleus complex are considered helpful in Achilles tendinopathy
- Modify the exercise program based on patient’s response after 6-12 weeks
- If patient improves, continue the exercise program for 6-12 months
Activity Modification
- Important that employers & coaches be aware of the treatment plan (eg limit the volume & intensity of loads on the injured tendon for a designated period)
- Necessary to eliminate pain & promote tendon healing
- Several studies have found associations between abnormal biomechanics or specific performance characteristics & development of tendinopathy
- Specific performance or biomechanics of the task should be evaluated & analyzed by a knowledgeable sports medicine clinician, ergonomics specialist, or a trained physiotherapist or kinesiologist
- Used as adjuncts to reinforce, unload & protect tendons during activity
- Safe, widely used & helpful in correcting biomechanical problems (eg excessive foot pronation, pes planus deformity)
Investigational Treatments
Autologous Blood Injection
- Uses whole blood or platelet-rich plasma
- Studies have shown improvement in pain & functional disability in patients treated w/ platelet-rich plasma injection
- The injected blood may contain growth factors that stimulates healing of the affected tendon
- May be done only when patient is unresponsive to both conservative & pharmacological therapies
- Utilizes acoustic, low-energy shock waves directly over the painful area of the tendon to alter the structural & neurochemical properties of tissues
- Decreases pain & enhances tendon healing
- Appears to be safe & effective
- May be used to treat lateral epicondylitis, calcific & noncalcific tendonitis of the supraspinatus & Achilles tendinopathy
- Electrical & ultrasonographic impulses are used to deliver topical nonsteroidal anti-inflammatory drugs (NSAIDs) & corticosteroids to symptomatic subcutaneous (SC) tissues
- Widely used & may be effective
- Corticosteroid iontophoresis is effective in improving patellar tendinopathy pain & function
- Chronic tendinopathy is associated w/ neovascularization of affected tendons
- Injection of a sclerosing agent (eg Polidocanol) may help reduce neovascularity based on small clinical trials for chronic midportion Achilles & patellar tendinopathy
- Injections appear to provide pain relief
- Injections are done under Doppler ultrasound guidance
- Larger clinical trials are needed to determine the effectiveness of this treatment
Therapeutic Ultrasonography
- Produces high frequency vibrations that generate heat which penetrates superficial tissues & improve blood flow
- Reduces pain & promotes collagen synthesis
- Effective for treatment of calcific tendinopathy
- Evidence for its consistent benefit in tendinopathies is weak