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BACKGROUND:Dislocation is a common short-term complication after total hip arthroplasty. Many factors can induce dislocation. Among controlable factors, the diameter of the femoral head may be one of factors affecting the incidence of dislocation. Generaly, large prosthesis meets the biomechanical feature of hip joint, and can increase the joint stability. OBJECTIVE:To observe the effects of different diameters of the femoral head on range of motion of the hip joint during primary total hip arthroplasty so as to provide evidence for selecting the prosthesis with an ideal diameter. METHODS: We colected data of 77 cases (87 hips), who underwent primary total hip arthroplasty with the femora head of 28 mm and 32 mm diameter in the Department of Orthopedics, Inner Mongolia Autonomous Region Wulanchabu Central Hospital from August 2009 to August 2012. Hip prosthesis was provided by ZIMMER Company. The hip motion interface was made from polyethylene on metal. The femoral head prosthesis was used as folows: 28 mm diameter in 51 hips, and 32 mm diameter in 36 hips. Posterior approach was utilized. Range of motion of hip internal rotation and external rotation to dislocation was measured at hip flexion 90° during the operation, and compared between different diameter groups. RESULTS AND CONCLUSION:The method of surgery was not changed during operation in al patients. No significant difference in the sum of degree at dislocation was detected between two different diameter groups (P > 0.05). No significant difference in the intraoperative range of motion during total hip arthroplasty was visible in patients with femoral neck fracture between the two different diameter groups (P > 0.05). No significant difference in the intraoperative range of motion during total hip arthroplasty was visible in patients with avascular necrosis of the femoral head between the two different diameter groups (P > 0.05). These data suggested that compared with the femoral head of 28 mm diameter, the femoral head of 32 mm diameter did not increase the range of motion during total hip arthroplasty. After operation, two kinds of femoral head did not affect the dislocation after total hip arthroplasty in 2-year folow-up.
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Objective To investigate the implementation of the system of older pregnant women prenatal ultrasound screening for the diagnosis and clinioal significance.Methods Clinical data from March 2004 to April 2009 a total of 10 630 cases of pregnant women receiving prenatal ultrasound examination of fetal malformation data,of which 712 cases of advanced maternal age( expected date of birth aged≥35 years) to implement the system of prenatal ultrasound screening and follow-up of all maternal age pregnancy outcome,the final post-natal diagnosis of fetal malformations in the standard,both young women screened as a control group for comparison to assess the value of prenatal ultrasound diagnosis.Results 712 cases of advanced maternal age,prenatal ultrasound diagnosis of fetal malformations in 32 cases,abnormalities occur in approximately 4.49％,single abnormal in 15 cases,complex deformity in 17 cases,missed 4 cases of malformation detection rate was 88.88％ (36/32).Control group,9918 cases of prenatal ultrasound diagnosis of fetal malformations 243 cases,2.45％ incidence of deformity (243/9 918 ).Conclusion Older pregnant women,prenatal ultrasound screening for malformations occur in approximately 4.49％,higher than the detection rate with screening younger women 2.45％,of older pregnant women according to the results of prenatal diagnostic screening could be effective in reducing the birth rate of deformed children and the rate of misdiagnosis.
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Objective To observe the expression levels of CD174, cyclin D1 and cyclin E in gastrointestinal tumor tissues, analyze the correlation among CD174, cyclin D1 and cyclin E, and evaluate the expression level of CD174 for diagnosis and prognosis of gastrointestinal tumors.Methods Flow cytometry was used to determine the expression of CD174, cyclin D1 and cyclin E on surface of the cells which were collected from the tumor tissues and distant part beside the same tumor and suspended. The expression and topography of CD174 in gastrointestinal tissue were investigated with immunohistochemical staining.Results The expression of CD174 in tumor tissues was obviously lower than that in distal noncancerous tissues (P