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Research ArticleCurrent Practice

Tennis elbow no more

Practical eccentric and concentric exercises to heal the pain

Hillel M. Finestone and Deborah L. Rabinovitch
Canadian Family Physician August 2008, 54 (8) 1115-1116;
Hillel M. Finestone
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Deborah L. Rabinovitch
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Lateral epicondylitis, commonly referred to as tennis elbow, affects 1% to 3% of the population.1 It is thought to be an overuse injury, originating in the wrist extensor muscles, rather than an inflammatory problem. It is brought on by occupational activities and sports that involve a repetitive wrist motion or a power grip. The condition is most commonly associated with work-related activities,2 such as cutting meat, plumbing, and working on cars, rather than with playing tennis.

The overuse causes microtears near the origin of the extensor carpi radialis brevis (ECRB) at the lateral epicondyle. This leads to the formation of fibrosis and granulation tissue. Infiltration of inflammatory cells takes place early on3 but is probably absent in more chronic cases.

There are various treatment options available, including local steroid injections, strapping, extracorporeal shock wave therapy, and acupuncture; however, many cases are difficult to treat successfully.4 Although exercise treatments are often recommended, the descriptions of these exercises lack sufficient detail.

The following article describes a muscle-strengthening program that involves progressive eccentric and concentric resistance exercises for treatment of lateral epicondylitis. The exercises can be done at home, and require only dumbbells, an instruction sheet, and the will to get better. Several of our patients who participated in this program have experienced long-term pain relief.

Muscle-strengthening program

The muscle-strengthening program was initially proposed by Dr Ernest W. Johnson (oral communication, October 2003), an American physiatrist from Ohio State University in Columbus. The program, described in Table 1, encompasses a 10-repetition maximum of eccentric and concentric movements of the wrist extensor muscles in 2 different positions: first with the elbow flexed to 90° (Figure 1), then with the elbow extended to 180° (Figure 2). The forearm is pronated in both positions. Slow full-wrist extensions are followed by slow full-wrist flexions; each full-wrist extension and full-wrist flexion should take 5 to 10 seconds. A “10-repetition maximum” means that it is difficult (or impossible) to do more than 10 repetitions with the given weight (handheld dumbbell). It is normal for pain to be present while performing the exercises. The weight is progressively increased when 10 repetitions can be completed without pain.

Figure 1
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Figure 1

Flexion of the elbow to 90° (concentric contraction of wrist extensor muscles)

Figure 2
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Figure 2

Extension of the elbow to 180° (eccentric contraction of wrist extensor muscles)

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Table 1 Muscle-strengthening program to treat lateral epicondylitis

Patient instructions.*

Typically, the pain of lateral epicondylitis decreases after 4 to 6 weeks of diligently performing the exercises once a day, 7 days a week.

Discussion

The rationale for the protocol of this regimen is that stressing the attachment of the ECRB through progressive eccentric and concentric resistance exercises results in the production of a dense collagenous scar in the area of attachment; thus, pain is eliminated. This idea is supported by the work of Curwin and Stanish,5 who wrote that the tension created through eccentric contractions allows the formation of new fibrous tissue at the musculotendinous unit, making it more resistant to damage. Other possible explanations for the positive effects of eccentric training on tendonitis include “lengthening” of the muscle-tendon unit, which might result in less strain during elbow joint motion, or “loading” of the muscle-tendon unit, which might increase the tensile strength of the tendon and cause hypertrophy of the muscle belly.

Both eccentric and concentric contractions increase muscle strength, but the former improve muscle strength more than the latter.6 Curwin and Stanish5 postulated that only eccentric contractions sufficiently generate the tension necessary for forming fibrous tissue at the musculotendinous structure, allowing adaptation to increased tension. These powerful contractions often result in soreness and potential damage to the muscle itself.7 On the basis of these findings, Walmsley et al8 stated that the addition of concentric contractions decreases muscle tension during the training regimen, thus minimizing muscle soreness and damage.

In our program, the exercises are done with the elbow in 2 positions. The 90° flexed position likely isolates the ECRB as the extensor carpi radialis longus attaches above the lateral epicondyle (lateral supracondylar ridge of the distal humerus). The 180° extended position is important because the extensor muscles, including the ECRB, are stretched further, creating more stress on the tendon during the exercises. The increase in tension generated from this extra stretch helps to build the collagenous scar in the area of attachment. This is the only program we know of that adopts both positions.

Croisier et al9 also showed benefits with a combined eccentric and concentric treatment; however, their program required the use of a specialized device that is not freely available in people’s homes.

Conclusion

The eccentric and concentric treatment regimen that we describe is inexpensive, convenient, and, in our experience, effective. Patients must be compliant and have some tolerance for pain. They need to be counseled about the exacerbation of pain when performing the exercises. Patients should also be provided with a detailed instruction sheet to enable them to safely follow the protocol at home.

Acknowledgment

We are grateful to Dr Sue Dojeiji and Dr Scott Wiebe for their helpful review of the manuscript. We thank Dr Arie Peliowski and Gloria Baker for editing the manuscript.

Footnotes

  • Competing interests

    None declared

  • Cet article a fait l’objet d’une révision par des pairs.

  • We encourage readers to share some of their practice experience: the neat little tricks that solve difficult clinical situations. Practice Tips can be submitted on-line at http://mc.manuscriptcentral.com/cfp or through the CFP website www.cfp.ca under “Authors.”

  • This article has been peer reviewed.

  • Copyright© the College of Family Physicians of Canada

References

  1. ↵
    AllanderEPrevalence, incidence, and remission rates of some common rheumatic diseases and syndromesScand J Rheumatol19743314553
    OpenUrlPubMed
  2. ↵
    ThorsonEPSzaboRMTendonitis of the wrist and elbowOccup Med19894341934
    OpenUrlPubMed
  3. ↵
    GoldieIEpicondylitis lateralis humeri (epicondylalgia or tennis elbow): a pathologenetical studyActa Chir Scand Suppl196457Suppl 3391049
    OpenUrl
  4. ↵
    PienimäkiTTarvainenTKSiiraPTVanharantaHProgressive strengthening and stretching exercises and ultrasound for chronic lateral epicondylitisPhysiotherapy19968252230
    OpenUrlCrossRef
  5. ↵
    CurwinSStanishWDTendinitis: its etiology and treatmentToronto, ONCollamore Press, DC Heath and Company1984
  6. ↵
    KomiPVBuskirkEREffect of eccentric and concentric muscle conditioning on tension and electrical activity in human muscleErgonomics197215441734
    OpenUrlPubMed
  7. ↵
    AbrahamsWHExercise-induced muscle sorenessPhys Sports Med19801294
    OpenUrl
  8. ↵
    WalmsleyRPPearsonNStymiestPEccentric wrist extensor contractions and the force velocity relationship in muscleJ Orthop Sports Phys Ther1986828893
    OpenUrlPubMed
  9. ↵
    CroisierJLFoidart-DessalleMTinantFCrielaardJMForthommeBAn iso-kinetic eccentric program for the management of chronic lateral epicondylar tendinopathyBr J Sports Med200741426975Epub 2007 Jan 15
    OpenUrlAbstract/FREE Full Text
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Canadian Family Physician: 54 (8)
Canadian Family Physician
Vol. 54, Issue 8
1 Aug 2008
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Tennis elbow no more
Hillel M. Finestone, Deborah L. Rabinovitch
Canadian Family Physician Aug 2008, 54 (8) 1115-1116;

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Hillel M. Finestone, Deborah L. Rabinovitch
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