Objective: To assess the efficacy of radiotherapy in alleviating pain
at rest and on exercise in tennis elbow (humeral epicondylitis). Patie
nts and methods: 45 elbow joints in 41 patients were radiated with a t
elecobalt unit in six sessions at a dose of 1.0 Gy each spread over 3
weeks. Indication for this treatment was pain in the elbow joint at re
st, on pressure and on exercise. The patients were re-assessed after a
mean follow-up period of 7.5 weeks. They were graded into one of five
groups on the basis of their own assessment. Pain on exercise was det
ermined by the Thompson hand-grip, chair test, forced extension and mi
ddle-finger stretch test. Results: Satisfactory analgesia was achieved
in 31 of 45 elbow joints (68.9%). About 50% of patients still had obj
ectifiable pain on exercise. Conclusions: Radiotherapy is a highly eff
icacious means of pain alleviation in tennis elbow, but the results ar
e better for pain at rest than on exercise. The Thompson hand-grip and
chair test, positive in more than 90% of patients, proved to be relia
ble criteria to assess the indications for radiotherapy and its result
s.