Treatment of Lateral Elbow Tendinopathy

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-10-31

Study Completion Date

2020-04-05

Brief Summary

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This study investigates the treatment effect on lateral elbow tendinopathy of strength training in combination with cortico-steroid injection, dry-needling or placebo in a double-blinded randomized controlled trial.

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Detailed Description

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The prevalence of lateral elbow tendinopathy is prevalence of 1-3%, with a peak incidence between 35-50 years of age (Green et al., 2002). The main symptoms are pain over the lateral humeral epicondyle upon palpation and pain full resisted dorsiflexion of the wrist. Ultrasonographic changes include hyper-/hypo-echoic areas and increased doppler signal in the most proximal part of the common extensor tendon. The condition is often self-limiting, however full recovery often takes months to years and recurrence is common. Several different treatment modalities are used in order to increase tendon healing and decrease time to recovery. Deep transverse friction massage showed no significant effect on pain, grip strength or function relative to other physiotherapy modalities (Brosseau et al., 2002). Anti-inflammatory treatment with NSAID's or corticosteroids is typically effective in the short term, however on a longer term there is a poorer outcome than with other treatment strategies including exercise (Coombes et al., 2010). Surgery does not seem to have any beneficial effect (Buchbinder et al., 2011), and there are no conclusive data regarding the use of orthotic devises for the treatment of lateral elbow tendinopathy (Struijs et al., 2002). Eccentric exercise of the extensor muscles has been shown to reduced pain, increase muscle strength, and decrease tendon thickness and time to return to sport (Croisier et al., 2007).

Loading of human tendon leads to increased tendon collagen synthesis, and interestingly, tendon tissue sampling (biopsies), which causes a minor trauma to the tendon has been shown to increase the level of growth factors locally and stimulate tendon collagen synthesis (Magnusson et al., 2010).

It is hypothesized that both minimal tissue damage and anti-inflammatory treatment could increase tendon healing and decrease time to recovery, when combined with mechanical loading.

Conditions

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Epicondylitis, Lateral Humeral

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Strength Training + Placebo

Strength Training: 2 weeks after the inclusion, the patients are instructed in heavy slow resistance exercise by a physiotherapist. Exercise is continued 3 times/week for the following 12 weeks, with supervised follow-up at week 4, 8 and 12. Exercise consists of wrist extension, flexion and supination/pronation. Starting at 3 x 15 repetition maximum, gradually increasing in weight to 3 x 6 repetition maximum from week 8.

Placebo: Ultrasound-guided subcutaneous injection of 2 ml isotonic saline over the proximal part of the common extensor tendon origin using a 0,8 mm needle. No-touch technique is used, and the patient is blinded with regards to the content of the syringe and the ultrasound-image.

Group Type ACTIVE_COMPARATOR

Strength Training

Intervention Type OTHER

Placebo

Intervention Type PROCEDURE

Strength Training + Cortico-Steroid Inj.

Strength Training: 2 weeks after the inclusion, the patients are instructed in heavy slow resistance exercise by a physiotherapist. Exercise is continued 3 times/week for the following 12 weeks, with supervised follow-up at week 4, 8 and 12. Exercise consists of wrist extension, flexion and supination/pronation. Starting at 3 x 15 repetition maximum, gradually increasing in weight to 3 x 6 repetition maximum from week 8.

Cortico-Steroid Injection: Ultrasound-guided injection of 1 ml depomedrol 40 mg/ml + 1 ml lidocaine 10 mg/ml deep to the proximal part of the common extensor tendon origin using a 0,8 mm needle. No-touch technique is used, and the patient is blinded with regards to the content of the syringe and the ultrasound-image.

Group Type EXPERIMENTAL

Strength Training

Intervention Type OTHER

Cortico-Steroid Injection. Depomedrol 40mg/1ml.

Intervention Type DRUG

Strength Training + Dry Needling

Strength Training: 2 weeks after the inclusion, the patients are instructed in heavy slow resistance exercise by a physiotherapist. Exercise is continued 3 times/week for the following 12 weeks, with supervised follow-up at week 4, 8 and 12. Exercise consists of wrist extension, flexion and supination/pronation. Starting at 3 x 15 repetition maximum, gradually increasing in weight to 3 x 6 repetition maximum from week 8.

Dry Needling: Ultrasound-guided penetration of the proximal part of the common extensor tendon origin is repeated 10 times using a 0,8 mm needle, followed by subcutaneous injection of 2 ml isotonic saline superficial to the tendon. No-touch technique is used, and the patient is blinded with regards to the content of the syringe and the ultrasound-image.

Group Type EXPERIMENTAL

Strength Training

Intervention Type OTHER

Dry Needling

Intervention Type PROCEDURE

Interventions

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Strength Training

Intervention Type OTHER

Placebo

Intervention Type PROCEDURE

Cortico-Steroid Injection. Depomedrol 40mg/1ml.

Intervention Type DRUG

Dry Needling

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

1. Pain around the lateral part of the elbow joint for more than 4 weeks.
2. Pain on palpation of the proximal part of the common extensor tendon.
3. Pain reproduced with resisted dorsiflexion of the wrist.
4. Dash score \> 30.
5. Ultrasonographic appearance consistent with lateral elbow tendinopathy (irregular appearance of the tendon, hypo-/hyper-echoic changes, pathological doppler signal, increased tendon thickness).

Exclusion Criteria

* American Society of Anesthesiologists (ASA) \> 2 (mild systemic disease).
* Patients with symptoms consistent with differential diagnoses such as:

* referred pain,
* radiohumeral synovitis and bursitis,
* posterior interosseous nerve entrapment (radial tunnel syndrome),
* osteoarthritis of the elbow, and
* prior injections or acupuncture around the elbow joint within the last 6 months

Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No