Background: Deltoid contracture can be a congenital or acquired condition. There were not any reports on deltoid contracture in English literature until 1960. In 2005 there were 170 children presented at the Viet Nam Pediatric Institute with deltoid contracture. These children came from different provinces, nationwide. The numbers of children who have this condition is increasing, but there were few studies on this problem in Viet Nam. Objectives: To identify the prevalence of deltoid contracture in Viet Nam in 2006-2007. Subjects and method: A cross-sectional study was done in 8 provinces representing for 3 geographic regions of Viet Nam., included Ha Noi, Ha Tay, Thanh Hoa and Lang son in Northern, Ha Tinh and Da Nang in Central and Tien Giang and Can Tho in the Southern region. 29,696 people aged from 1 to 60 years old at the baseline were involved in the study. The subjects were examined to identify the deltoid contracture based on defined criteria. Results: The prevalence of disease was 0.65% (0.83% in men and 0.51% in women). The rate was highest in the group of 6-10 years of age (1.81%). The prevalence was 0.82% in rural and 0.31% in urban area. Cases were found in all but 4 provinces (Da Nang, Tien Giang, Can Tho and Ha Noi) Conclusion: The prevalence of Deltoid contracture in Viet Nam was 0.65% in 2006-2007. It was more likely to occur in men than in women, in age group of 6 \u2013 10 than in other groups and in rural than in urban area.
Deltoid contracture

Background: Deltoid contracture can be congenital or acquired. A cross-sectional study has been done in 8 provinces representing three regions in Vietnam. These are Ha Noi, HaTay, Thanh Hoa and Lang Son in the North, Ha Tinh and Da Nang provinces in the central, Tien Giang and Can Tho provinces in the South of Vietnam. Objective: To identify the risk factors of Deltoid contracture in Vietnam from 2006 - 2007. Subject and Method: 29696 people aged from 1 to 60 years old at the time of the survey were examined to diagnose the Deltoid contracture as well as being interviewed by structured questionnaire. Results: There was significant association between contracture of Deltoid muscle and some factors. These are antibiotics injection into the Delta muscle at 0 - 5 years old: OR = 2.93 (1.435,8); Antibiotics type (streptomycin) was injected at 0-5 years old: OR = 45.2 (13.1 - 167); having cicatrix: OR = 73.4 (46.1 - 116.9). There was no significant association between Deltoid fibrosis and vaccination (position and administration). Logistic regression was done to find that antibiotics injection into Delta muscle at 6 - 10 years old and antibiotics type (streptomycin) were significantly associated with Deltoid contracture. Conclusion: Risk factors of Deltoid contracture in this study were antibiotic injection at aged 0 - 5 years old, antibiotic type (Streptomycin) and having cicatrix. There was no significant association between Deltoid fibrosis and vaccination (position and administration).
Deltoid contracture ; Risk factors ; Vietnam

BACKGROUNDThe deltoid contracture is an uncommon disorder. Long-standing contracture produces winged scapula, abduction and extension contracture of the shoulder. Surgical release has been considered the treatment of choice. However, the method of approach has not been well defined. The purpose of this study was to evaluate the results of arthroscopic release of the deltoid contracture.

METHODSA retrospective study was undertaken to evaluate the results of arthroscopic release in six patients (seven shoulders) who had a contracture of the deltoid muscle. All patients had arthroscopic release. The abduction-contracture and horizontal-adduction angle was measured after operation. The average duration of follow-up was 16 months (range, from 4 to 41 months).

RESULTSThe preoperative abduction contracture resolved completely in three shoulders. Two had a residual abduction contracture of 5° to 7° and two had a poor result with 15° abduction-contracture angle. The average postoperative abduction-contracture angle was 6° (range, 0° to 15°). The preoperative horizontal-adduction contracture was corrected, permitting at least 130° of adduction, in five shoulders. The remaining two shoulders had a postoperative horizontal-adduction angle of 120° and 110°. Overall, the average postoperative horizontal-adduction angle was 130° (range, 110° to 140°).

CONCLUSIONArthroscopic release is an effective surgical technique to treat the deltoid contracture.

Adolescent ; Adult ; Arthroscopy ; methods ; Child ; Contracture ; surgery ; Deltoid Muscle ; surgery ; Female ; Humans ; Male ; Retrospective Studies ; Young Adult