Tennis Elbow (Lateral Epicondylitis)
What is tennis elbow/lateral epicondylitis?
Lateral epicondylitis, commonly known as tennis elbow, is a painful
condition involving the tendons that attach to the bone on the outside
(lateral) part of the elbow. Tendons anchor the muscle to bone. The
muscle involved in this condition, the extensor carpi radialis brevis,
helps to extend and stabilize the wrist (see Figure 1). With lateral
epicondylitis, there is degeneration of the tendon’s attachment,
weakening the anchor site and placing greater stress on the area. This
can then lead to pain associated with activities in which this muscle is
active, such as lifting, gripping, and/or grasping. Sports such as
tennis are commonly associated with this, but the problem can occur with
many different types of activities, athletic and otherwise.
What causes tennis elbow/lateral epicondylitis?
Overuse – The cause can be both non-work and
work related. An activity that places stress on the tendon attachments,
through stress on the extensor muscle-tendon unit, increases the strain
on the tendon. These stresses can be from holding too large a racquet
grip or from “repetitive” gripping and grasping activities,
i.e. meat-cutting, plumbing, painting, weaving, etc.
Trauma – A direct blow to the elbow may result
in swelling of the tendon that can lead to degeneration. A sudden
extreme action, force, or activity could also injure the tendon.
Who gets tennis elbow/lateral epicondylitis?
The most common age group that this condition affects is between 30
to 50 years old, but it may occur in younger and older age groups, and
in both men and women.
Signs and symptoms of tennis elbow/lateral epicondylitis
Pain is the primary reason for patients to seek medical evaluation.
The pain is located over the outside aspect of the elbow, over the bone
region known as the lateral epicondyle. This area becomes tender to
touch. Pain is also produced by any activity which places stress on the
tendon, such as gripping or lifting. With activity, the pain usually
starts at the elbow and may travel down the forearm to the hand.
Occasionally, any motion of the elbow can be painful.
Treatment for tennis elbow/lateral epicondylitis
Conservative (non-surgical)
Activity modification – Initially, the
activity causing the condition should be limited. Limiting the
aggravating activity, not total rest, is recommended. Modifying grips or
techniques, such as use of a different size racket and/or use of
2-handed backhands in tennis, may relieve
the problem.
Medication – anti-inflammatory medications may
help alleviate the pain.
Brace – a tennis elbow brace, a band worn over
the muscle of the forearm, just below the elbow, can reduce the tension
on the tendon and allow it to heal.
Physical Therapy - may be helpful, providing stretching
and/or strengthening exercises. Modalities such as ultrasound or heat
treatments may be helpful.
Steroid injections – A steroid is a strong
anti-inflammatory medication that can be injected into the area. No more
than (3) injections should be given.
Shockwave treatment – A new type of treatment,
available in the office setting, has shown some success in 50–60%
of patients. This is a shock wave delivered to the affected area around
the elbow, which can be used as a last resort prior to the consideration
of surgery.
Surgery
Surgery is only considered when the pain is incapacitating and has
not responded to conservative care, and symptoms have lasted more than
six months. Surgery involves removing the diseased, degenerated tendon
tissue. Two surgical approaches are available; traditional open surgery
(incision), and arthroscopy—a procedure performed with instruments
inserted into the joint through small incisions. Both options are
performed in the outpatient setting.
Recovery
Recovery from surgery includes physical therapy to regain motion of
the arm. A strengthening program will be necessary in order to return to
prior activities. Recovery can be expected to take 4–6 months.

Figure 1: The muscle involved in this condition, the
extensor carpi radialis brevis, helps to extend and stabilize the
wrist
© 2006 American Society for Surgery of the Hand
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