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| 1 | Longitudinal evaluation of time related femoral neck narrowing after metal-on-metal hip resurfacing显示文摘AIM: To track the short-term neck narrowing changes in Birmingham metal-on-metal hip resurfacing(MOMHR) patients. METHODS: Since 2001, the Center for Hip and Knee Replacement started a registry to prospectively collect data on hip and knee replacement patients. From June 2006 to October 2008, 139 MOMHR were performed at our center by two participate surgeons using Birmingham MOMHR prosthesis(Smith Nephew, United States). It is standard of care for patients to obtain low, anteriorposterior(LAP) pelvis radiographs immediately after MOMHR procedure and then at 3 mo, 1 year and 2 year follow up office visits. Inclusion criteria for the present study included patients who came back for follow up office visit at above mentioned time points and got LAP radiographs. Exclusion criteria include patients who missed more than two follow up time points and those with poor-quality X-rays. Two orthopaedic residency trained research fellows reviewed the X-rays independently at 4 time points, i.e., immediate after surgery, 3 mo, 1 year and 2 year. Neck-to-prosthesis ratio(NPR) was used as main outcome measure. Twenty cases were used as subjects to identify the reliability between two observers. An intraclass correlation coefficient at 0.8 was considered as satisfied. A paired t-test was used to evaluate the significant difference between different time points with P < 0.05 considered to be statistically significant.RESULTS: The mean NPRs were 0.852 ± 0.056, 0.839 ± 0.052, 0.835 ± 0.051, 0.83 ± 0.04 immediately, 3 mo, 1 year and 2 years post-operatively respectively. At 3 mo, NPR was significantly different from immediate postoperative X-ray(P < 0.001). There was no difference between 3 mo and 1 year(P = 0.14) and 2 years(P = 0.53). Femoral neck narrowing(FNN) exceeding 10% of the diameter of the neck was observed in only 4 patients(5.6%) at two years follow up. None of these patients developed a femoral neck fracture(FNF). CONCLUSION: Femoral neck narrowing after MOMHR occurred as early as 3 mo postoperatively, and stabilized thereafter. Excessive FNN was not common in patients within the first two years of surgery and was not correlated with risk of FNF. | Wenbao Wang Jeffrey A Geller Rohit Hasija Jung Keun Choi David A Patrick Jr. William Macaulay | 2013 | World Journal of Orthopedics2013，4，2： | 4 |
| 2 | Synthesis and regulation of ex-tracellular keratinase in three fungi isolated from the grounds of ge-latin factory, Jabalpur, India 显示文摘 | Malviya H K Rajak R C Hasija S K | 1992 | Mycopathologia1992，120，： | 1 |
| 3 | Call center outsourcing contracts under information asymmetry 显示文摘 | Hasija S Pinker E J Shumsky R A | 2008 | Management Science2008，54，4： | 1 |
| 4 | Call center outourcing contracts under information asymmetry显示文摘 | Hasija S Pinker E J Shumsky R A | | 0，，04： | 1 |
| 5 | Monitoring protein folding and unfolding pathways through surface hydrophobicity changes using fluorescence and circular dichroism spectroscopy显示文摘 | LAMBA J PAUL S HASIJA V | 2009 | Biochemistry (Moscow)2009，74，4： | 1 |
| 6 | Synthesis and regulation of extracellular keratinase in three fungi isolated from the grounds of a gelatin factory, Jabalpur, India显示文摘 | H. K. Malviya R. C. Rajak S. K. Hasija | 1992 | Mycopathologia1992，，1： | 1 |
| 7 | Estimation of Tooth Size Discrep- ancies among Different Malocclusion Groups显示文摘 | Hasija N Bala M Goyal V | 2014 | lnt J Clin Ped- iatr Dent2014，7，2： | 1 |
| 8 | Finite element model of ocular injury in abusive head trauma显示文摘 | RANGARAJAN N KAMALAKKANNAN S B HASIJA V | 2009 | J AAPOS2009，13，4： | 1 |
| 9 | Determination of levels of nitric oxide in smoker and nonsmoker patients with chronic periodontitis 显示文摘 | Wadhwa D Bey A Hasija M | 2013 | J Periodontal Implant Sci2013，43，5： | 1 |
| 10 | Intrathoracic malignant pe- ripheral nerve sheath tumor: histopathological and immunohisto- chemical features显示文摘 | Ralli M Singh S Hasija S Yerma R | 2015 | Iran J Pathol2015，10，1： | 1 |
| 11 | Newsvendor pull-to-center reconsidered显示文摘 | Lau N Hasija S Bearden J N | 2014 | Decision Support Systems2014，58，2： | 1 |
| 12 | Phytopathological on Phomopsis veccans causing soft rot of brinjal fruits 显示文摘 | Chaudhary S R Hasija S K | 1979 | Indian Phytopa- t hology1979，32，： | 1 |
| 13 | Estimation of Tooth Size Discrepancies among Different Malocclusion Groups 显示文摘 | Hasija N Bala M Goyal V | 2014 | Int J Clin Pediatr Dent2014，7，2： | 1 |
| 14 | High-density transfection with HEK-293 cells allows doubling of transient titers and removes need for a priori DNA complex formation with PEI显示文摘 | Backliwal G Hildinger M Hasija V | 2008 | Biotechnology and Bioengineering2008，99，3： | 1 |
| 15 | Hemisection-hope for last survival显示文摘 | Hasija M Wadhwani KK Yadav RK | 2013 | Natl J Maxillofac Surg2013，4，2： | 1 |
| 16 | Scheduling in flowshops to minimize total tardiness of jobs显示文摘 | HASIJA S RAJENDRAN C | 2004 | International Journal of Production Research2004，42，11： | 1 |
| 17 | Reserving capacity for urgent patients in primary care显示文摘 | Dobson G Hasija S Pinker E J | 2011 | Production and Operations Management2011，20，3： | 1 |
| 18 | Deformation and creep modeling in polycrystalline Ti-6A1 alloys 显示文摘 | Hasija V Ghosh S Mills M J | 2003 | Acta Materialia2003，51，15： | 1 |
| 19 | Prevalence of pathogenic fungi in a gelatin factory effluent 显示文摘 | Divya S Singhal P K Hasija S K | 1990 | Indian Journal of Environmental Health1990，32，2： | 1 |
| 20 | Synthcsis and regulation of extracellular keratinase in three fungi isolated rom the grounds of gelatinfactory,Jabalpur,India显示文摘 | Malviya HK Rajak RC Hasija SK | 1992 | Mycopathologia1992，120，： | 1 |
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