A pilot study on lengthening potentials and biomechanical effects of double and triple hemisection on tendon with slide lengthening.

The current study explored the slide-lengthening potentials of double and triple hemisections and the biomechanical effects of different inter-hemisection distances. Forty-eight porcine flexor digitorum profundus tendons were divided into double- and triple-hemisection groups (Groups A and B) and a control group (Group C). Group A was divided into Group A1 (distance between hemisections were the same as Group B) and Group A2 (distance between hemisections corresponded to the greatest distance between hemisections in Group B).

[Prevalence for isolated systolic hypertension and analysis on its relative factors in 1002 cases >or= 80 year old persons].

Objective: To study and analysis prevalence and incidence of target organ injury and the relative factors for isolated systolic hypertension (ISH) in Beijing.

Methods: 1002 cases aged 80 to 99 years were investigated in 28 cadre retirement centers in Beijing. Blood pressure was taken for three times with mercurial sphygmomanometer in every person, the mean values were recorded and the relative material was gathered according to questionnaire after the health education.