Objective To compare the effects of bipolar femor al head replacement (BFHR) and total hip replacement (THR) in the treatment of femoral neck fractures (FNF) in the elderly. Methods Between August 1993 and December 2001, BFHR or THR were performed in 48 old patients (at age of 60-85 years, mean 70.8 years) with subcapital and transcervical types of FNF. Of all, 18 cases were tre ated with BFHR (Group BFHR) and 30 with THR (Group THR). Results OF all, two patients died (not related to operation), one received no f ollow up and 45 were followed up for average 5 years and 2 months with no wound infection or hip dislocation. Occurrence rate of hip and thigh pains in the Grou p THR was 3% (1/29), lower than that in the Group BFHR (4/16). Conclus ions BFHR is only fit for senile cases with poor physical con dition. However, THR can be used for most old patients with FNF.

OBJECTIVE: To explore the relationship among perceived organizational support,job burnout and depressive tendency in nursing staffs. METHODS: A total of 807 nurses from 7 municipal hospitals in Zhengzhou City,Henan Province were selected as the study subjects by multi-stage cluster random sampling method. The questionnaires of Perceived Organizational Support,Maslach Burnout Inventory-General Survey and Center for Epidemiological Survey-Depression Scale were used to conduct the survey. RESULTS: The total scores of perceived organizational support and job burnout were( 69. 3 ± 18. 5) and( 36. 3 ± 13. 7) respectively. The median of the total score of depression tendency was 17. 00. The total score of nurses' perceived organizational support was negatively correlated with the total scores of job burnout and depression tendency( P < 0. 01). The total score of job burnout was positively correlated with the total score of depression tendency( P < 0. 01). The degree of explanations for the change of perceived organizational support and job burnout on depression tendency were 9. 1% and 13. 1%,respectively. CONCLUSION: Perceived organizational support and job burnout play important roles in predicting depression tendency. Job burnout plays a mediating role in the relationship between perceived organizational support and depression tendency.