Common extensor origin release in recalcitrant lateral epicondylitis - role justified?
© Rayan et al; licensee BioMed Central Ltd. 2010
Received: 11 December 2008
Accepted: 10 May 2010
Published: 10 May 2010
The aim of our study was to analyse the efficacy of operative management in recalcitrant lateral epicondylitis of elbow. Forty patients included in this study were referred by general practitioners with a diagnosis of tennis elbow to the orthopaedic department at a district general hospital over a five year period. All had two or more steroid injections at the tender spot, without permanent relief of pain. All subsequently underwent simple fasciotomy of the extensor origin. Of forty patients thirty five had improvement in pain and function, two had persistent symptoms and three did not perceive any improvement. Twenty five had excellent, ten had well, two had fair and three had poor outcomes (recurrent problem; pain at rest and night). Two patients underwent revision surgery. Majority of the patients had improvement in pain and function following operative treatment. In this study, an extensor fasciotomy was demonstrated to be an effective treatment for refractory chronic lateral epicondylitis; however, further studies are warranted.
Lateral epicondylitis is characterised by localised pain over the origin of extensor muscles of the finger and wrist at the lateral epicondyle. The cornerstone of the diagnosis are detailed history regarding aggravating and relieving factors and the provocative tests like grasping in elbow extension, resisted wrist and long finger extension and resisted forearm supination. There is often a decrease in the grip strength. Differential diagnosis includes radial tunnel syndrome, radio humeral arthritis, osteochondritis of capitellum, posterolateral instability of the elbow and injury to lateral ante brachial cutaneous nerve [1–3]. An AP, lateral and radiocapitellar view are used as primary imaging modality in order to rule out intraarticular disease or a musculoskeletal tumor. The other imaging techniques like magnetic resonance imaging, electromyography and nerve conduction studies may be complementary.
Most of the current non-operative modalities utilized in the treatment on lateral epicondylitis are not evidence based. Most of the studies do not differentiate between clinical and statistical significance, and they were unable to depict any beneficial effect of their treatment over natural history of the condition. Patients who fail to respond to conservative measures may require surgery (<10%). Various operative techniques including open, percutaneous and arthroscopic techniques have been described. Percutaneous procedure has an advantage of reduced morbidity but it has an inherent possibility of inadequate resection or recurrence . Also it is not possible to rule out intraarticular pathology (concurrence of 18.8%). In the literature there is only one study comparing all three techniques, even though it was done retrospectively.
Materials and methods
Patients rated as per Grundberg criteria
Excellent = 25
Returned to activity/
Good = 10
Pain with heavy use
Returned to activity/
Fair = 2
Pain which limits activity
Returned to activity/
Patient partially satisfied
Poor = 3
Under general anaesthesia and tourniquet control a curvilinear incision centred over lateral epicondyle measuring approximately one inch is made, the deep fascia is incised distal to lateral epicondyle. Common extensor origin (extensor carpi radialis longus, brevis, extensor digitorum and the anconeus) is released and retracted. Care was taken to avoid any damage to lateral collateral ligament. Wound was closed in layers using 4-0 monocryl for the skin. Wool and crepe dressing with elbow flexed at 90 degrees was applied. Patients were encouraged to start activities within limits of pain.
Majority of the patients were in the fifth decade, the age range was 31-60 years with an average of 43.7 years and Male: Female ratio was 16:24. The minimum follow up was 12 months, the range was 12 to 54 months with an average follow up period of 24 months No patient were lost to follow up There were no post operative complications. Thirty five patients had full range of movements post operatively. The mean preoperative pain score was 8.9 and the mean post operative pain score was 1.6. Full range of painless motion was achieved. Out of 40 patients 35 had significant improvement in pain and function, two had persistent symptoms and three did not perceive any improvement. Twenty five had excellent, ten had good, two had fair and 3 had poor outcomes (recurrent problem; pain at rest and night). Two patients underwent revision surgery with satisfying results. During revision, excessive scar tissue was excised and the extensor aponeurosis was repaired. Care was taken to stay superficial during dissection to avoid any damage to lateral collateral ligament, and none of them had posterolateral rotatory instability of the elbow. Majority of the patients had significant improvement following operative treatment.
Lateral epicondylitis or tennis elbow is one of the most regularly encountered disorders of the elbow that can cause significant pain and dysfunction. This disorder was first described by Runge in 1873 and the term tennis elbow was coined in 1883 by Major [6, 7]. Both the terms are misnomers as it occurs more commonly in non athletes and there is a contrasting evidence to suggest there is an inflammatory process. Less than 5-10% of patients with lateral tennis elbow syndrome are tennis players, however as group tennis players do run a higher risk of developing this syndrome [8, 9]. The incidence of tennis elbow varies from 1-3% . It is seen more often in fourth decade . Even if aetiology is attributed to various factors like bursitis, synovitis, ligament inflammation, periosteitis; the most common accepted etiology is microscopic tears with formation of reparative tissue on the lateral epicondyle. Cyriax in 1936 had explained about 26 etiological factors of tennis elbow. Still the pathology is uncertain as no published data have examined patients with acute diagnosis of tennis elbow [4, 12]. The natural history of this disease is 70-80% resolution at 1 year [10, 13].
The number and variety of overuse syndromes are expected to increase since our lifestyle demands physical fitness and sports participation. The principle of any successful operation is the accurate identification of the pathological process involved and its correction with a minimum disruption of normal tissues. The treatment of tennis elbow has been laden with controversy. Various surgical techniques including fasciotomy, z-lengthening of the tendon, osteotomy of the lateral epicondyle and excision of the damaged portion of ECRB(extensor carpi radialis brevis) as well open and percutaneous tenotomy have been described in the literature. Arthroscopic technique is also in vogue. Poor surgical outcome due to the operative intervention can be correlated with residual tendinopathy . No conclusions were derived from the last Cochrane database review of tennis elbow; we have a dearth of level II evidence to substantiate the advantage of any one surgical treatment for tennis elbow. So far in the literature we could trace only one randomized controlled trial comparing open, percutaneous and arthroscopic techniques in the treatment of tennis elbow.
Grundberg and Dobson reported good or excellent results in 29 of 32 elbows and Baumguard and Schwartz achieved 32 excellent and three dissatisfied patients in 35 elbows following percutaneous release [2, 16]. Nirschl and Pettrone achieved an excellent outcome in 66 of 88 elbows using an open technique[17, 11]. The reported rates of good results have ranged from 54% to 99% in common extensor origin release which makes it an exceedingly reasonable procedure for the treatment of lateral epicondylitis unresponsive to conservative treatment.
Our results demonstrated no complications and a low rate of revision surgeries in those patients treated with this technique (2/40) with a success rate on par with previous published series on other techniques for surgical treatment of lateral epicondylitis. The main drawbacks of this study are the retrospective nature, smaller number of patients, lack of comparison group and the duration of follow up. However they were treated by a single surgeon with a standard technique. We were able to obtain follow-up data on all of the original 40 elbows studied. The results suggest that a release of the common extensor tendon origin may be a reasonable approach to the treatment of lateral epicondylitis and should be evaluated further as part of a more controlled randomized investigation.
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