Purpose: To compare the clinical results of arthroscopic transglenoid suture with thermal capsulorrhaphy and thermal capsulorrhaphy on multidirectional shoulder instability. Materials and Methods: From January 1993 to September 2001, 23 patients who received the artrhoscopic treatment were the subjects and follow up period were at least 2 years. Each were subdivided as Group A(7 cases), which took transglenoid suture with thermal capulorrhaphy and Group B(16 cases), who took only thermal capsulorrhaphy. Clinical results were evaluated by Rowe score before and after surgery. Results: After operation according to Rowe score 4(57.1%) were excellent, 1(14.3%) were good and 2(28.6%) were fair in the Group A. for Group B 6(37.5%) were excellent, 2(12.5%) were good, 5(31.3%) were fair and 3(18.8%) were poor. Shoulder instability was recurred in 1(14.2%) case of Group A and 8(50%) cases of Group B during follow up period. Conclusion: Thermal capsulorrhaphy is thought to be a good adjuvent method, if it done with anterior capsular shift by transglenoid suture in multidirectional shoulder instability.