OBJECTIVES: To analyze bone mass distribution and the factors affecting bone mass in a general Chinese Han cohort undergoing physical examinations at our center. METHODS: We retrospectively collected the data of bone mineral density (BMD) measurements from 30 599 healthy Han Chinese adults (age≥20 years) who underwent dual-energy X-ray absorptiometry scans at our hospital from July, 2013 to July, 2023. Basic parameters including height, body weight, and gender were recorded, and descriptive statistics and correlation analyses were performed using R software. RESULTS: In this cohort, the male individuals had a mean peak BMD of 1.00±0.12 g/cm² in the lumbar vertebrae, 0.94±0.14 g/cm² in the femoral neck, and 0.99±0.13 g/cm² in the total hip, significantly higher than the values in the female individuals [0.99±0.12 g/cm² in the lumbar vertebrae (P=0.022), 0.79±0.11 g/cm² in the femoral neck (P<0.001), and 0.88±0.11 g/cm² in the total hip (P<0.001)]. In the overall cohort, the BMD values of the lumbar spine and femur decreased with age after reaching their peak levels. There was a positive correlation between BMD value and body mass index (BMI) in both male and female individuals. The 2013-2014 period recorded the lowest BMD values in the lumbar, hip, and femoral neck, which tended to increase steadily in the following years (2015-2023). CONCLUSIONS Our data suggest that the BMD values vary among different populations, and future multi-center studies using more accurate BMD detection technology are warranted to capture the variation patterns of BMD with demographic characteristics of specific populations.
Humans ; Bone Density ; Absorptiometry, Photon ; Male ; Female ; Retrospective Studies ; Osteoporosis/diagnostic imaging* ; Adult ; Middle Aged ; Lumbar Vertebrae/diagnostic imaging* ; China/epidemiology* ; Femur Neck/diagnostic imaging* ; Aged ; Beijing/epidemiology* ; Young Adult

Objective:To investigate the effect of an integrated orthopedic rehabilitation model on pain,ankle function and exercise level over 24 weeks after lateral ankle ligament repair.Method:A retrospective cohort of 81 patients after ankle ligament repair at the fourth medical center of Chinese PLA general hospital from September,2021 to September,2022 were selected.The patients were divided into an experimental cohort(n=43)and a control cohort(n=38)by whether the patient had received integrated orthopaedic rehabilitation(strictly follow clinical pathway of rehabilitation for postoperative ankle ligament repair patients)or conventional physician-guided rehabilitation.American orthopedic foot and ankle society score(AOFAS)、visual analogue scale(VAS)、foot and ankle ability measure-activities of daily living(FAAM-ADL)、foot and ankle ability measure-sport(FAAM-S)and Tegner score were assessed at 2 weeks、12 weeks、24 weeks after surgery.Result:The AOFAS、VAS score was statistically higher in experimental cohort than in control cohort at 12 weeks after surgery(P=0.043、P=0.033).The AOFAS、FAAM-ADL、Tegner score(P=0.017、P=0.021、P=0.038,re-spectively)was higher and VAS score(P=0.035)was lower in the experimental cohort than in control cohort at 24 weeks.Conclusion:Integrated orthopaedic rehabilitation can improve ankle function,exercise level and quality of life on patients after ankle ligament repair surgery compared with conventional rehabilitation.

Objective:To investigate the effect of an integrated orthopedic rehabilitation model on pain,ankle function and exercise level over 24 weeks after lateral ankle ligament repair.Method:A retrospective cohort of 81 patients after ankle ligament repair at the fourth medical center of Chinese PLA general hospital from September,2021 to September,2022 were selected.The patients were divided into an experimental cohort(n=43)and a control cohort(n=38)by whether the patient had received integrated orthopaedic rehabilitation(strictly follow clinical pathway of rehabilitation for postoperative ankle ligament repair patients)or conventional physician-guided rehabilitation.American orthopedic foot and ankle society score(AOFAS)、visual analogue scale(VAS)、foot and ankle ability measure-activities of daily living(FAAM-ADL)、foot and ankle ability measure-sport(FAAM-S)and Tegner score were assessed at 2 weeks、12 weeks、24 weeks after surgery.Result:The AOFAS、VAS score was statistically higher in experimental cohort than in control cohort at 12 weeks after surgery(P=0.043、P=0.033).The AOFAS、FAAM-ADL、Tegner score(P=0.017、P=0.021、P=0.038,re-spectively)was higher and VAS score(P=0.035)was lower in the experimental cohort than in control cohort at 24 weeks.Conclusion:Integrated orthopaedic rehabilitation can improve ankle function,exercise level and quality of life on patients after ankle ligament repair surgery compared with conventional rehabilitation.

Objective: To explore the analgesic effects and uterine hemodynamics of perpendicular needling (PN) and transverse needling (TN) at SP 6 in patients with primary dysmenorrhea (PD). Methods: In this randomized controlled trial, patients with PD diagnosed with cold-dampness con-gealing pattern were randomly assigned in a ratio of 1:1 to receive PN or TN at bilateral SP 6 for 10 min. Acupuncture was performed when the menstrual pain score was over 40 mm on the first day of menstruation, as measured using the visual analog scale for pain (VAS-P). The primary outcome was average menstrual pain (VAS-P). Secondary outcomes included the pulsatility index (PI), resistance index (RI), and systolic-diastolic peaks ratio (S/D) in uterine arteries as measured using color Doppler ultra-sonography;anxiety as assessed using the Hamilton Anxiety Rating Scale (HAMA), blood pressure (BP), and heart rate (HR). Results: Forty-eight patients completed the study. The TN group exhibited a significant reduction in VAS-P scores (-5.71 mm, 95％ confidence interval (CI): -8.78, -2.63, P = .001), RI values (-0.05, 95％ CI:-0.09,-0.01, P=.015), and HAMA values (-2.50, 95％CI:-4.78,-0.22, P=.032) when compared with the PN group. No significant differences in PI, S/D, BP, or HR values were observed between the two groups (P>.05). Conclusion: TN at SP 6 was superior to PN in alleviating menstrual pain and anxiety in patients with PD. This analgesic effect of TN may be due to its better ability to improve uterine arterial blood flow via decreases in RI values.