We examined the effects of acupuncture therapy on 41 patients with various levels of periarthritis scapulohumeralis. These patients were classified into two groups: one consisting of 20 patients having no contracture, those of freezing type (age 61.0±9.0; suffering period 3.0±5.1 months) and the other consisting of 21 patients having contracture, those of frozen type (age 53.8±7.3; suffering period 5.8±7.8 months).
As a result, we found that acupuncture therapy relieved pain more effectively in patients having no spontaneous pain than in those having spontaneous pain regardless of the presence or absence of contracture. We next investigated the effects of this therapy by the patient types. In the group of 20 freezing-type patients, which includes only six patients having spontaneous pain, pain relief was relatively easily obtained as indicated by the pain score after the therapy of 3.6±1.8. In the group of 21 frozen-type patients, which includes 13 patients having spontaneous pain, however, it was difficult to obtain sufficient pain relief as indicated by the pain score of 5.7±2.8. There was a statistically significant difference (P<0.002) between these scores. This shows that acupuncture therapy is more effective on freezing-type patients than on frozen-type patients.
Therapy also improved the range of motion. In many freezing-type patients, the range of motion was expanded due to pain relief. The abduction ROM expanded from 151.8±39.0° before therapy to 163.8±25.0° after acupuncture therapy. In frozen-type patients, however, the range of motion did not expanded significantly (87.6±24.1° before to 94.8±21.1° after therapy). The above results suggest that acupuncture therapy is effective for relieving the pain of periarthritis scapulohumeralis and that this therapy is particularly effective when applied to those patients having no spontaneous pain before they enter into the frozen phase.

 Forty-one patients with periarthritis with no evident articular contracture at the start of acupuncture (at the first presentation) were divided into 13 subjects who developed articular contracture during acupuncture (transition group) and 28 subjects who did not (non-transition group), and the clinical characteristics of the two groups were compared.  The following results were obtained. (1) The mean age of the subjects was significantly higher in the transition group than in the non-transition group (58.5±6.8 years vs. 52.1±9.6 years). (2) The percentage of subjects in the transition group was significantly higher in the subjects not clearly diagnosed as having no contracture at the first presentation than clearly diagnosed as no contracture (57% vs. 19%). (3) The percentage of subjects in the transition group was significantly higher in the subjects in whom the lesion site was enlarged or could not be identified than independent (50% vs. 17%). (4) The percentage of subjects in the transition group was significantly higher in the subjects with nocturnal pain than without (64% vs. 15%). (5) The transition group was unlikely to show improvement of pain or restriction of the range of motion with acupuncture as compared to the non-transition group.  The possibility of developing articular contracture should be considered while providing treatment by acupuncture and guidance to patients showing the above tendencies.