SummaryStudy aim: To assess the effect of one term of stretching exercise on primary dysmenorrhea in high school students. Material and methods: 179 single girls aged 15-17 years with moderate-to-severe primary dysmenorrhea were selected from 6 high schools located in 2 different city zones. The students were non-athletes and volunteered for the study. The participants were randomly divided into 2 groups: an experimental group (n = 124) and a control group (n = 55). In the intervention group, the subjects were requested to complete an active stretching exercise for 8 weeks (3 days per week, 2 times per day, 10 minutes each time) at home. In the pre-test, all of subjects were examined for pain intensity (10-point scale), pain duration, and the use of sedative tablets in 2 continuous menstruation cycles. The posttest was examined 8 weeks later. Results: After 8 weeks, pain intensity was reduced from 7.65 to 4.88, pain duration was decreased from 7.48 to 3.86 hours, and use of sedative tablets was decreased from 1.65 to 0.79 tablets in the experimental group (p<0.05). In the control group, a significant decline was only noted for pain duration (p<0.001). Conclusions: Stretching exercises are effective in reducing pain intensity, pain duration, and the amount of painkillers used by girls with primary dysmenorrhea.

SummaryStudy aim: To assess the presence of musculoskeletal deformities in lower extremities and to detect faulty posture in schoolchildren living in a rural region of Iran. Material and methods: 172 schoolchildren aged 5-20 years, including 66 boys and 106 girls were screened deviations in the musculoskeletal system. Furthermore, the postural muscles including the hamstring and gastroc-soleus were examined for finding any shortness. Results: The prevalence of cervical lordosis (22.6% vs. 6.1%), forward head posture (24.1% vs. 9.1%) and thoracic kyphosis (27.8 % vs. 7.6%) was significantly higher in girls than in boys. The prevalence of cervical lordosis, FHP, thoracic kyphosis, and genu varum increased with age; in the case of genu valgum, the situation was reversed. Genu varum was almost twice as frequent in girls as in boys (44.4% vs. 25.8%; p<0.01), while the genu valgum was more frequent (p<0.001) in boys than in girls (13.6 and 2.8, respectively). No significant age or gender-dependent differences were found for hamstring shortness (29%), gastroc-soleus shortness (21%), genu recurvatum (22%), and hallux valgus (31%). Conclusions: Faulty posture and lower limb deformities were highly prevalent in school children in this rural region. More attention should be paid to implementing school-based screening programs aimed at early detection of any musculoskeletal-related abnormalities and taking preventive steps to reduce their negative consequences.

The popliteal fossa is located at the back of the knee joint and it is an area where blood vessels and nerves and also lymph nodes pass. Popliteal fossa injuries includes nearly 2% of acute knee injuries. The treatment of chronic injuries are always more difficult than acute ones, because its diagnosis would depend on careful interpretation of specific clinical exams. In this review, we describe our current understanding of role of popliteal fossa in knee problems, and summarize the anatomy and functional role of popliteal fossa and popliteomeniscal fibers, and mechanism of popliteomeniscal fibers injuries, and discuss strategies for diagnosis of popliteomeniscal fibers lesions, differential diagnosis, and treatment of the posterolateral corner injuries.