With the development of the Multi-Rigid-Body system dynamics theory and computer technology, computer aided design and manufacturing of orthosis have already matured, mathematical mechanical model of human body and orthosis can be established using this new technology, and simulation calculation can be used to determine the orthosis prescription, predict the efficacy and effectiveness of rehabilitation. Early application of ankle-foot orthosis plays an important role in restoration of brain function in stroke patients, resumption of hemiplegic gait and abnormal gait correction. In clinical orthosis prescription, establishment of corresponding mathematical model and speculation of ankle-foot function changes, as well as the effect and mechanism of resumption of brain function in post-stroke patients, have a positive impact on the analysts of hemiplegic gait, orthosis design and gait resumption.

BACKGROUND:The studies of plantar pressure mainly focus on barefoot,while the research regarding the effect of shoes on kinetic parameters is little.OBJECTIVE:To explore the peak value of foot plantar pressure between barefoot and wear shoes in max force,max pressure,load rate and impulse during the natural walk,and to search the parameter relationship between barefoot and with shoes.DESIGN,TIME AND SETTING:The the same body control analysis was performed at the Laboratory of Sports and Human Science of Nanjing Institute of Physical Education in October 2007 PARTICIPANTS:A random sampling method was used to selected 10 male college students from the Nanjing Institute of Physical Education which aged(21.00?2.40) years,weighing(71.53?3.16) kg,body height(176.32?2.62) cm,and foot length(25.67?0.92) cm.According to the regulation,informed consent was obtained from each participant.METHODS:Normal gait of 10 participants were measured by Foot scan7.0 plantar pressure test system,including barefoot and with shoes.MAIN OUTCOME MEASURES:The distribution of maximum force,maximum pressure,load rate and impulse.The parameter relationship between barefoot and with shoes were assessed in the study.RESULTS:The max force existed in the area of heel medial,the second metatarsal and the third metatarsal.The minimum force existed in the area of the toes 2-5 and the fifth metatarsal.The max pressure of barefoot existed in the area of the toes 2-5 and the second metatarsal and heel during walking.The load rate of heel was the highest.The max impulse existed in the second metatarsal and the third metatarsal and heel.The minimum impulse existed in the toes 2-5 and the fifth metatarsal.When wearing shoes,the max force existed in the area of the mid foot and toe1,The minimum force existed in the area of the toe 5,during walking the max pressure existed in the area of the instep.The load rate of the mid foot and heel was the highest.The max impulse existed in the mid foot.The minimum impulse existed in the fifth metatarsal.CONCLUSION:The parameters of forefoot,instep,and heel were larger than barefoot during walking,especially those of the phalanges2-5 and instep.

Objective To discuss microvessel density (MVD) and expression of vascular endothelial growth factor(VEGF), androgen receptor(AR) in the prostates of men who received re-operation after TURP. Methods Fifty cases were performed re-TURP (re-TURP group) and the remaining 50 cases served as controls. 150 specimens were collected. Sections were stained for CD34 and VEGF, AR by immuno-histo-chemistry(S-P). Statistical analysis of the results was performed using t-test or Pearson Chi-Square test Results The expression of VEGF, AR and MVD were significantly higher in the re-TURP group compared to controls(P<0. 05),but in re-TURP group, difference in VEGF and AR expression as well as MVD were not found to be significantly different between the first and the second TURP(P>0.05). Conclusion Over expression of VEGF and AR as well as high MVD in prostatic tissue might play an important role in the pathological process of BPH after TURP.

OBJECTIVETo study the application of hand-assisted laparoscopic surgery (HALS) in colorectal carcinoma resection.

METHODSFourteen patients with colorectal carcinoma underwent resection by HALS.

RESULTSHand-assisted laparoscopic right hemicolectomy was performed in 6 of 8 ascending colon cancer patients, spending an average of 160 minutes (110 to 220 minutes) for the procedure. The amount of bleeding was 40 approximately 100 ml. Bowel sounds resumed in 36 approximately 72 hours after the operation. The average interval between the operation and patients' discharge was 8 days (7 to 12 days). For 2 patients the surgeons had to resort to laparotomy. All patients received postoperative chemotherapy. Hand-assisted laparoscopic abdominoperineal resection was performed in 5 of 6 patients with lower rectal cancer, with the average duration of 180 minutes (120 to 270 minutes), with bleeding of 40 to 80 ml. Bowel sounds resumed within 24 to 72 hours and the average discharge interval was 14 days (12 to 18 days). The urinary catheter in 6 patients was removed in 7 to 8 days after the operation. All patients with rectal carcinoma received postoperative chemotherapy and radiotherapy. One patient was shifted to laparotomy because of extensive adhesion in the pelvic cavity. Four of 11 patients treated by HALS experienced slight pain in the incision. No other complications were observed in any of the patients. Remote results await further follow-up.

CONCLUSIONHand-assisted laparoscopic surgery in the treatment of colorectal carcinoma, a safe and simple procedure, not only ensures the clearance of tumor, but also reduces operative trauma and hastens recovery.

Adult ; Aged ; Colectomy ; Colorectal Neoplasms ; surgery ; Female ; Hand ; Humans ; Laparoscopy ; Male ; Middle Aged ; Treatment Outcome