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The Prevalence of Medial Epicondylitis Among Patients With C6 and C7 Radiculopathy

Background: Medial epicondylitis, or golfer’s/pitcher’s elbow, develops as a result of medial stress overload on the flexor muscles at the elbow and presents as pain at the medial epicondyle. Cervical radiculopathy has been associated with lateral epicondylitis, but few associations between the cervical spine and medial epicondylitis have been made. Researchers propose that there is an association, suggesting that the weakness and imbalance in the elbow flexor and extensor muscles from C6 and C7 radiculopathy allow for easy onset of medial epicondylitis. Hypothesis: Medial epicondylitis will present in over half the patients diagnosed with C6 and C7 radiculopathy. Methodology: A total of 102 patients initially presenting with upper extremity or neck symptoms were diagnosed with cervical radiculopathy. They were then examined for medial epicondylitis. Data were collected by referring to patient charts from February 2008 until June 2009. Results: Fifty-five patients were diagnosed with medial epicondylitis. Of these, 44 had C6 and C7 radiculopathy whereas 11 presented with just C6 radiculopathy. Conclusion: Medial epicondylitis presented with cervical radiculopathy in slightly more than half the patients. Weakening of the flexor carpi radialis and pronator teres and imbalance of the flexor and extensor muscles from the C6 and C7 radiculopathy allow for easy onset of medial epicondylitis. Patients with medial epicondylitis should be examined for C6 and C7 radiculopathy to ensure proper treatment. Physicians dealing with golfers, pitchers, or other patients with medial epicondylitis should be aware of the association between these 2 diagnoses to optimize care.

M edial epicondylitis, a condition seen commonly in golfers and pitchers, develops as a result of medial stress overload on the flexor musculature at the elbow. 2,14 The medial elbow muscle overload is typically obtained by repetitive golf swings or pitching-hence, the term golfer's elbow or pitcher's elbow. Most pathology occurs in the musculotendinous origin of the flexor carpi radialis and pronator teres. 1,8 Large diffuse tears can also occur in the palmaris longus, flexor digitorum superficialis, and flexor carpi ulnaris. 10,11 The injury is a result of tendinous microtearing owing to muscle-tendon overload. 13 Following the overload, tendon degeneration occurs instead of repair. 10,11 Medial epicondylitis presents as pain at the medial epicondyle, aggravated by activities that resist the flexor muscles of the wrist. Medial epicondylitis can cause pain and weakness throughout the upper extremity and can result in impairment or disability. 9,11 Treatment of medial epicondylitis before surgery includes anti-inflammatory drugs, massages, elbow braces, and steroid injections. 5 Cervical radiculopathy can radiate pain, paresthesia, numbness, or weakness into the arms. 12,15 Multiple associations of lateral epicondylitis (tennis elbow) to the cervical spine have been made, but minimal association between the medial epicondylitis and the cervical spine has been proposed. 9 Gunn documented 50 patients with nonresolving lateral elbow symptoms. 7 Cervical spine treatment produced improvement of elbow symptoms within 5.25 weeks. Gunn concluded that the patients had cervical degeneration before the onset of their elbow symptoms and that cervical therapy alleviated the elbow symptoms. 7 C6 and C7 radiculopathy affects muscles that are The Prevalence of Medial Epicondylitis Among Patients With C6 and C7 Radiculopathy Aaron Taylor Lee* and Ayse L. Lee-Robinson, MD Background: Medial epicondylitis, or golfer's/pitcher's elbow, develops as a result of medial stress overload on the flexor muscles at the elbow and presents as pain at the medial epicondyle. Cervical radiculopathy has been associated with lateral epicondylitis, but few associations between the cervical spine and medial epicondylitis have been made. Researchers propose that there is an association, suggesting that the weakness and imbalance in the elbow flexor and extensor muscles from C6 and C7 radiculopathy allow for easy onset of medial epicondylitis.
Hypothesis: Medial epicondylitis will present in over half the patients diagnosed with C6 and C7 radiculopathy.
Methodology: A total of 102 patients initially presenting with upper extremity or neck symptoms were diagnosed with cervical radiculopathy. They were then examined for medial epicondylitis. Data were collected by referring to patient charts from February 2008 until June 2009.
Results: Fifty-five patients were diagnosed with medial epicondylitis. Of these, 44 had C6 and C7 radiculopathy whereas 11 presented with just C6 radiculopathy.
Conclusion: Medial epicondylitis presented with cervical radiculopathy in slightly more than half the patients. Weakening of the flexor carpi radialis and pronator teres and imbalance of the flexor and extensor muscles from the C6 and C7 radiculopathy allow for easy onset of medial epicondylitis. Patients with medial epicondylitis should be examined for C6 and C7 radiculopathy to ensure proper treatment. Physicians dealing with golfers, pitchers, or other patients with medial epicondylitis should be aware of the association between these 2 diagnoses to optimize care. injured with medial epicondylitis: pronator teres, flexor carpi radialis, palmaris longus, flexor digitorum superficialis, and flexor carpi ulnaris. 4 Although few cases are documented where the cervical spine is the cause of medial epicondylitis, an association between cervical radiculopathy at the C6 and C7 level and medial epicondylitis may exist. Medial epicondylitis is commonly seen in golfers and pitchers. 8 A group of patients were diagnosed with cervical radiculopathy after initially presenting with upper extremity or neck symptoms. C6 and C7 radiculopathy results in weakness and dysfunction of pronator teres, flexor carpi radialis, palmaris longus, flexor digitorum superficialis, and flexor carpi ulnaris. 4 These are the muscles involved with medial epicondylitis. 3 The developed weakness in these flexor muscles may allow for onset of medial epicondylitis.

METHODS
A total of 102 patients were studied, as evaluated and treated at the office of a physical medicine and rehabilitation specialist. Patients were originally referred with complaints of neck pain and upper extremity weakness, numbness, tingling, or pain. All patients in this study were diagnosed with cervical radiculopathy. Diagnosis of cervical radiculopathy was reached using a combination of physical examination, symptoms, and cervical magnetic resonance imaging (MRI) results. 2,3 The patient group was a sample of convenience from February 2008 until June 2009.
The level of cervical radiculopathy was noted, along with whether the patient was diagnosed with medial epicondylitis. The sex, age, and involvement of medial epicondylitis were noted. Medial epicondylitis was diagnosed by palpating 1 cm distal and anterior to the medial epicondyle and noting whether the patient reported tenderness or not. What led to the diagnosis were a reported increase of medial elbow pain with wrist flexion or pronation resistance and reports of increased pain during activities that required wrist flexion. 5,6

DISCUSSION
Fifty-four percent of patients with C6 and C7 radiculopathy were also diagnosed with medial epicondylitis, approximately 20% of whom had only C6 radiculopathy. Women had a higher incidence of medial epicondylitis than that of men, which may be due to the larger sample size of the former.
These data suggest that medial epicondylitis occurs with C6 and C7 radiculopathy. The patients did not sustain medial stress overload at the elbow by swinging a golf club or throwing a ball. This implies that an underlying condition made them more susceptible to the injury, allowing onset to occur without the repetitive medial muscle stress that is usually connected with medial epicondylitis.
Cervical radiculopathy can cause weakness as well as pain to the muscles around the medial epicondyle. 3 The primary muscles involved with medial epicondylitis-pronator teres and flexor carpi radialis-are weakened by C6 and C7 radiculopathy. 1,8,10,11 The weakness may result in an imbalance of the wrist and finger extensor and flexor muscles. The radiculopathy could also cause the lack of tissue repair that occurs with medial epicondylitis. 10,11 From a clinical aspect, whenever a patient is diagnosed with medial epicondylitis, an underlying cervical radiculopathy should be ruled out before treatment. A history of pain, numbness, and weakness of the neck, arm, forearm, or hand is of concern. The physical examination should include a thorough neurological examination of muscle strength, sensory loss, and reflexes. 6 In addition, if medial epicondylitis does not respond to the traditional treatment regimens, then consideration of cervical radiculopathy is recommended before surgical treatment.
This study has 2 limitations. Most important, the diagnosis of medial epicondylitis was made with commonly accepted physical examination findings: pain with palpation distal and anterior to the medial epicondyle, an increase in pain with For reprints and permissions queries, please visit SAGE's Web site at http://www.sagepub.com/journalsPermissions.nav.

SORT: Strength of Recommendation Taxonomy
A: consistent, good-quality patient-oriented evidence B: inconsistent or limited-quality patient-oriented evidence C: consensus, disease-oriented evidence, usual practice, expert opinion, or case series Clinical Recommendation

SORT Evidence Rating
Golfers, pitchers, or other athletes presenting with medial epicondylitis should also be checked for cervical radiculopathy.

Clinical Recommendations
resisted wrist fl exion, and increased pain with repetitive wrist fl exion. 5 , 6 Imaging and electrodiagnostic studies were not used to confi rm the diagnosis of medial epicondylitis. These symptoms are not exclusive to medial epicondylitis, and the association is not concrete. Other processes could have caused these fi ndings.

CONCLUSION
Medial epicondylitis may frequently occur among patients with C6 and C7 radiculopathy. Patients that present with medial epicondylitis can have an overlying cervical radiculopathy that is responsible for the onset of the medial elbow symptoms.