Arthroscopic treatment of work-related lateral epicondylitis - prognostic factors.

Lateral epicondylitis is a condition whose pathophysiology is poorly understood and whose optimal treatment divides physicians. Arthroscopy has proven its worth, with results similar to or better than open surgery. The purpose of this study was to look for prognostic factors for the outcomes of arthroscopic treatment of lateral epicondylitis. This was a retrospective, single-center study involving 39 cases (36 patients). Patients were split into two groups based on the Mayo Elbow Performance score (MEPS). A good result was defined as a score of 75 or better. The variables of interest were gender, age, body mass index, smoking habits, recognition as an occupational disease, duration of absence from work, cartilage involvement, presence of a capsular lesion and length of follow-up. The mean follow-up at review was 37.2 months (± 17.4). The average MEPS was 77.44 (± 15.51). Smoking was statistically related to a poor result (P = 0.0422) and a longer follow-up was statistically related to a good result (P = 0.0396). We identified two prognostic factors for lateral epicondylitis treated by arthroscopy. Smoking has a negative effect and ideally, patients should quit before surgical treatment. Time has a positive effect; thus patients should be informed that it will take several months or even years for their ailment to improve. Taking these factors into consideration will improve the functional outcomes of this surgery.