ObjectiveTo observe the effect of pulsed electromagnetic fields (PEMFs) on bone mineral density (BMD) of spinal cord injuried (SCI) patients. MethodsThe PEMFs group was composed of 12 SCI patients received regular PEMFs treatment as the treatment group, 12 SCI patients treated without PEMFs were as the control group.BMD of total proximal femur, Ward's trigonum and great trochanter of all patients were detected by dual-energy X-ray absorptiometry before and after treatment.ResultsBMDs of total proximal femur and great trochanter of patients of the treatment group were a little increased after PEMFs treatment, with no significant difference (P>0.05), but BMD change was significantly different compared with the control group (P<0.05～0.01).ConclusionPEMFs treatment along with routine exercise may help to reduce the loss of bone after SCI.

Objective To describe a novel pubovesical complex preserving technique for laparoscopic radical prostatectomy and to evaluate its postoperative outcomes.Methods From January 2011 to May 2017,168 patients who underwent laparoscopic radical prostatectomy were enrolled and analyzed retrospectively.Their mean age were 62.8 (46-74) years,preoperative PSA 11.3ng/ml,Gleason score 6.7,preoperative prostate volume 46.5 ml.They all got preoperative potency (IIEF-5 score ≥ 15 score).TNM clinical stage:cT1 123 cases,45 cases cT2.There were 59 patients with pubovesical complex preserving technique for laparoscopic radical prostatectomy (group A):without pelvic fascia cut and deep vein complex suture.The preservation of the periprostatic anatomy was kept by preserving the pubovesical complex,including detrusor apron with pubovesical ligaments,DVC and NVB.There were 46 patients with conventional intrafascial laparoscopic radical prostatectomy (group B) and 63 patients with interfascial laparoscopic radical prostatectomy(group C).No differences were found between the three groups in terms of preoperative age,clinical staging,prostate-specific antigen (PSA) values,Gleason score at biopsy and preoperative good potency (IIEF-5 score)(P ＞0.05).Continence was defined as zero to one security pad per day.The three groups were compared for perioperative variables,PSM (positive surgical margin,PSM)rate,postoperative urinary continence functional and potency (IIEF-5 score).Biochemical recurrence-free survival was by Kaplan-Meier and log-rank.Results No differences were found in the three groups in terms of operative times,blood loss,catheterization time and postoperative stay and histologic status (PSM was similar to that of the groups (8.5％ in group A,13.0％ in group B vs.11.1％ in group C).Urinary incontinence:group A,the continence rate was 71％,82％,92％ and 100％ at 1,3 and 6 months after catheter removal,respectively;group B,the continence rate was 63％,80％,89％ and 96％ respectively;group C,it was 24％,54％,79％ and 86％ respectively.The group A showed a significantly earlier recovery from incontinence compared with that in the group C at immediately after catheter removal and 1 month after catheter remove (x2 =27.47,P ＜ 0.001;x2 =15.20,P ＜ 0.01).The group B showed a significantly earlier recovery from incontinence compared with that in the group C at immediately after catheter removal and 1 month,(x2 =17.00,P ＜ 0.01;x2 =8.20,P ＜ 0.05).No differences were found between the A and B groups at immediately after catheter removal and 1 month,(P ＞ 0.05).Regarding sexual function,at the postoperative 1,3,6 months,median IIEF-score was 10,11,16 in the group A,respectively,8,9,13 in the group B respectively,and 7,8,12 in the group C respectively.No differences were found in the three groups in potency (IIEF-5 score).Baseline IIEF-score was reached by 53％,35％ and 21％ at postoperative 6 months.There were significant differences between the A and the C groups.(x2 =13.45,P ＜0.01).There were no significant differences between the A and the B groups.(x2 =3.30,P ＞ 0.05).Follow-up was 31.6 (6-69) months.Biochemical recurrence-free survival at 3 years was 79.3％,76.3％ and 76.4％ by A,B and C group,respectively.Conclusions The pubovesical complex preserving technique for laparoscopic radical prostatectomy provides early recovery from incontinence,faster recovery of sexual function preoperative levels.

Objective To investigate the present situation of facial melanin of construction workers in Beijing area,to discuss the relative affecting factors,and to provide theoretical basis for theoretical research on photoaging and occupational protection for construction workers.Methods A total of 157 healthy male construction workers and 61 non-construction workers in Beijing were selected to conduct a questionnaire survey on their exposure to dust,sunlight,noise and high temperature in their working environment.The occurrence of melanin in their face skin was measured by melanin index (melanin index,MI) probe.T test,Spearman rank correlation analysis and multiple logistic regression were used for statistical analysis on two independent samples.Results The exposure of construction workers to dust,sunlight,noise and high temperature was significantly higher than that of non-construction workers (P ＜0.05);the melanin score of construction workers over 40 years old was significantly higher than that of non-construction workers (P ＜0.05) and positively correlated with age (P＜0.05);the melanin of construction workers was affected by age,sunlight and noise (P＜0.05).Conclusions The melanin level of the construction workers aged over 40 is significantly higher than that of the non-construction workers in Beijing.Age,sunlight and noise are the main factors affecting the melanin level.