Objective To evaluate the clinical results of arthroscopic repair of massive rotator cuff tear. Methods The study involved 16 patients with massive rotator cuff tears treated arthroscopically from September 2007 to June 2009. There were 6 males and 11 females at average age 61.5 years (45-75 years). The rotator cuff tears was repaired with arthroscopic double-row reconstruction. The range of motion, pain, strength of flexed elevation and function evaluation score were all recorded before operation and at final follow-up. The results were evaluated by t test and compared according to age and course of disease. Results All patients were healed without complications and the outcome was improved significantly ( P < 0.01 ). The mean VAS score was improved from preoperative 5.6 to postoperative 1.7,the average forward flexion from 69. 1°to 151.2°, the average external rotation from 14.7° to 32.2°, and internal rotation from L1 level to T10, the mean Constant-Murle from 39 to 85, the mean UCLA from 10.4 to 28, the mean SST from 2.8 to 8.8 and the strength of flexed elevation from 10.7% of normal side to 65.0%. Compared with preoperation, there was statistical difference in aspects of pain, range of motion, muscle strength and function in postoperation (P < 0.01 ). Conclusion Arthroscopic doublerow fixation can attain satisfactory results in repair of massive rotator cuff tear.

BACKGROUND: Changes in the center of body weight during standing reflects the structure, function and muscles of the lower limbs and even the whole body. The relationship between standing posture control and foot type, balance ability, and muscle activation is rarely reported. OBJECTIVE: To investigate the effects of natural, lean forward and lean backward standing on foot arch, body balance and muscle activation. METHODS: Fifteen subjects without foot lesions and diseases related to foot function were selected. Three-dimensional foot scanner was used to test and analyze the foot arch in three standing postures. BTS FREEMG 300 surface electromyography tester and balance tester were used to test and analyze the maximum root mean square of muscle and two balance ability indexes (envelope area and average velocity of center of gravity) in three standing postures. RESULTS AND CONCLUSION: (1) For height index of foot arch: there was significant difference between natural standing and forward standing (P ＜ 0.05). There was significant difference between natural standing and backward standing (P ＜ 0.05), but there was no significant difference between forward standing and backward standing (P＞ 0.05). (2) The degree of muscle activation was as follows: when standing naturally, the medial peroneal muscles＞ erector muscles＞ rectus abdominis＞ gluteus medius＞ biceps femoris＞ external oblique femoris＞ anterior tibial muscle＞ rectus femoris muscle＞ gluteus maximus muscle. During forward standing: the medial of the peroneal muscle＞ medius gluteus＞ vertical ridge＞ long head of biceps femoris＞ anterior tibial muscle＞ rectus abdominis muscle＞ gluteus maximus. During backward standing: the obliquus externus femur＞ rectus femoris＞ long head of biceps femoris＞ erector spinae＞ musculus rectus abdominis＞ the medial of the peroneal muscle＞ gluteus medius＞ gluteus maximus. (3) Balance: there was no significant difference between natural standing and forward standing (P＞ 0.05); there was significant difference between natural standing and backward standing (P ＜ 0.05), but there was no significant difference between forward standing and backward standing (P＞ 0.05). (4) In summary, it is easy to maintain body stability at low muscle activation intensity when the human body is standing naturally. During the body backward standing, the muscle activation intensity is highest due to instability. When the center of gravity moves forward and backward, the contralateral muscle is mainly activated. The arch of the foot rises when it leans forward and backward. The slight anterior and posterior movements of the center of gravity in the standing posture can lead to changes in muscle activation degree and balance control.

Objective:To explore the effect of knowledge-clinical-sharing (KCS) model in humanistic care training of pediatric nurses.Methods:A total of 182 specialist nurses who were trained in Hunan Children's Hospital from June 2019 to December 2019 were selected as the research objects. Among them, 102 specialist nurses from June 2019 to August 2019 were selected as the control group, and 80 specialist nurses from September 2019 to December 2019 were selected as the intervention group. The Jefferson empathy scale was used to compare the effect of humanistic training before and after the implementation. SPSS 22.0 statistical software was used, measurement data were test by F-test and t-test, and the counting data were analyzed by Chi-square test. Results:After the implementation of humanistic care training based on KCS model, the empathy ability score of the intervention group was higher than that of the control group [(80.23±5.33) vs. (78.14±4.37)], and the difference was statistically significant ( P < 0.01). There was no significant difference between neonatal and pediatric specialist nurses before and after the training. Conclusion:The phased humanistic training based on KCS model can improve the empathy ability of pediatric nurses and enhance their confidence in the clinical implementation of humanistic care. However, the humanistic training mode of pediatric nurses should be improved according to the hospital's own situation, so as to adapt to the development of nursing industry.