Summary An operation for chronic olecranon bursitis is described and the results of 11 cases reviewed. It is suggested that a number of patients with this condition have a prominent olecranon process or spur. The technique involves excision of the olecranon process only, the bursa itself is preserved. The overlying skin remains undamaged and this manoeuvre avoids the unpleasant sequelae that may follow its removal. The operation appears to give satisfactory results.