As we proposed the shoulder function assessment would be very useful in evaluating functional and disease status of frozen shoulder patients, To know the clinical utility of shoulder function assessment through patient follow-up and to analyze the clinical features and treatment result of patient follow-up and to the factors that correlate with treatment outcome and total treatment duration ,We analyzed 61 patients who finished treatment and had adequate follow-up from 128 patient who referred from complaints shoulder pain and limitation of motion. All patient were evaluated at the initial visit and during subsequent visits by physicians. The effect of variables on clinical outcome and treatment duration were analyzed The conclusions were as following;

1) Longer treatment duration could be estimated with the patients who had bilateral involvement, longer pretreatment symptom duration , low initial score but after excluding the effect of other variables, Severity grouping of shoulder function assessment and history of Diabetes Mellitus were most independently correlated with treatment duration.

2) Poor treatment outcome was correlated with lower patient's range of motion, longer pretreatment symptom duration, bilateral involvement and lower power but most independently correlated with significant degenerative change in X-ray findings in multi-variate analysis.

3) Above findings show shoulder function assessment score in initial visit and severity grading was correlated with treatment duration and outcome, so it was useful in initial evaluation of disease status and documentation of function as well as estimation of treatment result.