Objective:To evaluate the effect of age and gender on the femoral morphology to guide prosthesis selection in operation and design.
Methods:A total of 500 females and males were collected from the departments of orthopedics and medical radiology, Second Xiangya Hospital, Central South University. Informed consent was obtained from all subjects. All patients underwent anteroposterior position scan of the left or right hip joint using Philips Digital Diagnost DR system. The shooting range included the hip joint and at least 2/3 of the proximal femur. The images were measured with Onis 2.3 software. We measured 13 parametersfromthepatients,includingtheexternalparamtersofthefemur,radius-lengthparameters of femoral medullary cavity, and morphological parameters of the femoral medullary cavity. Results:Compared with Westeners, the offset was smaller, while the neck shaft angle was signiifcantly larger in Chinese population (P<0.05). Most parameters of the proximal femoral medul ary cavity diameter were significantly smal er in Chinese population than those in Westerners (P<0.05). The canal lfare index in Chinese population was signiifcantly larger than that in the Westerners (P<0.01). According to the Noble classification, in Chinese population, the proportion of champagne lfute type was signiifcantly larger, while the proportion of standard type was significantly smaller than that in Westerners. There was significant difference in the proximal femur between Chinese population and Westerners. The largest difference of the proximal morphology was presented between males and females in the 31-50 years old people (P<0.05), while the smallest was in the over 70 years old population (P>0.05). The main differences between 31 and 70 years old were the diameter of femoral head, the offset of isthmus, the medullary cavity diameter and extracortical width at isthmus level and the medullary cavity diameter at the level of the lesser trochanter (P<0.05). The modullary transverse diameter at 20 mm below the lesser trochanter and isthmus and extracortical width of isthmus in the male and female group was positively correlated with age (P<0.01), while the parameters of the proximal femoral canal morphology in the female group were negatively correlated with age. The female canal parameters had a stronger correlation. Conclusion:Chinese proximal femoral parameters are signiifcantly different from Westerners. When people, especially females, get older, the medullary cavity diameter of the isthmus and proximal femur becomes wider and the morphology of the femur becomes straight. The difference in the femoral morphology between the male and female decline with the age. There is almost no difference for the over 70 years old. For the 31-70 years old, The male femoral cavity diameter is larger and the position of isthmus is lower than in the females.

ObjectiveTo investigate the mental health level of entrants.MethodsThe status of mental health of entrants in 05 class of Ningbo University was investigated with the Symptom Checklist-90 (SCL-90). The 8405 available samples were analyzed.ResultsThe prevalence of psychological symptoms of this group was 9.42%, while the levels of obsessive-compulsive, phobia and psychopathic deviate were significantly higher than that of the Chinese module. To the average level of mental health, female was inferior to male, non-single child in family was inferior to single child, students from towns and countries were inferior to those from cities; students with medical history or psychosis history in family had higher levels of symptomatology; students satisfied with their majority and received satisfied entrance education were superior to the ones who were not satisfied.ConclusionThe education of mental health for the entrants should be enhanced to raise their mental health level.

Femoral neck fracture (FNF) in the elderly patients is currently a major health challenge worldwide, with excessive consumption of medical resources, high incidence of complications as well as suboptimal outcome and prognosis. Hip joint arthroplasty (HJA) has been the mainstream treatment for FNF in the elderly, but the conventional surgical approaches and techniques are still confronted with a series of bottlenecks such as dislocation, limp and limb length discrepancy. In recent years, direct anterior approach (DAA) for HJA (DAA-HJA) has been a major new choice in the field of joint replacement, which achieves improved clinical effectiveness of HJA in the treatment of elderly FNF, due to the fact that DAA approach involves the neuromuscular interface and accords with the idea of soft tissue retention and enhanced recovery after surgery. However, there is still a lack of unified understanding of standard technique and procedure of DAA-HJA in the treatment of elderly FNF. Therefore, relevant experts from the Hip Joint Group of Chinese Orthopedics Association of Chinese Medical Association, Youth Arthrology Group of Orthopedic Committee of PLA, Orthopedic Committee of Chongqing Medical Association, Branch of Orthopedic Surgeons of Chongqing Medical Doctor Association and Sport Medicine Committee of Chongqing Medical Association were organized to formulate the " Chinese expert consensus on the technical standard of direct anterior hip arthroplasty for elderly femoral neck fracture ( version 2023)" based on evidence-based medicine. This consensus mainly proposed 13 recommendations covering indications, surgical plans, prosthesis selections, surgical techniques and processes, and postoperative management of DAA-HJA in elderly patients with FNF, aiming to promote standardized, systematic and patient-specific diagnosis and treatment to improve the functional prognosis of the patients.