Objective: The aim of the present study is to discriminate functions for sex determination in a subjected sample of the Egyptian population using the morphology of metacarpals and phalanges for gender comparison. Furt...Objective: The aim of the present study is to discriminate functions for sex determination in a subjected sample of the Egyptian population using the morphology of metacarpals and phalanges for gender comparison. Furthermore, the measurements discussed in this study will aid in predicting the differentiation independently and guaranteeing sex determination in the subjected population individually. Methods: Forty measurements were taken from the right metacarpals and phalangeal bones of 100 subjects, whose ages ranged from 19 to 60. Moreover, the measurements of nine metacarpals and four phalangeal bones were used for sex discrimination in each sample population. Results: Males had significantly greater mean values (P < 0.05) for the lengths of the metacarpals and the proximal phalangeal bones of all right-hand fingers than females. The cut-off value and the accuracy percentage for precise sex classification of males and females using individual and grouped bones showed that a value higher than the marking point classified an individual as male and that a lower value suggested female. Besides, the multiple stepwise discriminant functional analysis of the most predictable internal variables of the metacarpals revealed a cross-validated sex classification accuracy of 100%. In contrast, the most predictable internal variables of the phalanges showed a cross-validated sex classification accuracy of 93%. Conclusion: The results revealed a new forensic suggestion for the determination of sex based on the measurements of the metacarpals and the phalanges. Moreover, various discriminant equations were applied for the declaration of this conceivable recommendation.展开更多
目的掌指骨骨折是手外科常见创伤性疾病,掌指骨参与腕掌、掌指、指间关节的构成,治疗不当将严重影响患者的手的功能。文中探讨微型钢板、穿髓克氏针固定、牵引位石膏托3种不同治疗方法在掌指骨骨折治疗中的临床疗效。方法选取掌指骨骨...目的掌指骨骨折是手外科常见创伤性疾病,掌指骨参与腕掌、掌指、指间关节的构成,治疗不当将严重影响患者的手的功能。文中探讨微型钢板、穿髓克氏针固定、牵引位石膏托3种不同治疗方法在掌指骨骨折治疗中的临床疗效。方法选取掌指骨骨折患者60例共95个部位,分别平均进入微型钢板内固定、穿髓克氏针固定及牵引位石膏托3种不同治疗方法组,术后随访6～12个月,平均随访(8.1±1.5)个月,按照总主动屈曲度系统(total active flexion system,TAFS)评分评估3组临床疗效。结果微型钢板组内固定优良率为90.9%,穿髓克氏针内固定组优良率为71.4%,牵引位石膏保守治疗组优良率为55.6%,3组结果差异有显著统计学意义(P<0.05)。骨折愈合时间微型钢板组较其他2组短,差异有统计学意义(P<0.05)。切开复位感染率微型钢板内固定组为0.0%,穿髓克氏针组为15.4%(P<0.05)。结论微型钢板内固定治疗掌指骨骨折在术后关节功能恢复、骨折愈合时间、术后感染预防方面都具有明显优势,是首选的治疗方法。展开更多
文摘Objective: The aim of the present study is to discriminate functions for sex determination in a subjected sample of the Egyptian population using the morphology of metacarpals and phalanges for gender comparison. Furthermore, the measurements discussed in this study will aid in predicting the differentiation independently and guaranteeing sex determination in the subjected population individually. Methods: Forty measurements were taken from the right metacarpals and phalangeal bones of 100 subjects, whose ages ranged from 19 to 60. Moreover, the measurements of nine metacarpals and four phalangeal bones were used for sex discrimination in each sample population. Results: Males had significantly greater mean values (P < 0.05) for the lengths of the metacarpals and the proximal phalangeal bones of all right-hand fingers than females. The cut-off value and the accuracy percentage for precise sex classification of males and females using individual and grouped bones showed that a value higher than the marking point classified an individual as male and that a lower value suggested female. Besides, the multiple stepwise discriminant functional analysis of the most predictable internal variables of the metacarpals revealed a cross-validated sex classification accuracy of 100%. In contrast, the most predictable internal variables of the phalanges showed a cross-validated sex classification accuracy of 93%. Conclusion: The results revealed a new forensic suggestion for the determination of sex based on the measurements of the metacarpals and the phalanges. Moreover, various discriminant equations were applied for the declaration of this conceivable recommendation.
文摘目的掌指骨骨折是手外科常见创伤性疾病,掌指骨参与腕掌、掌指、指间关节的构成,治疗不当将严重影响患者的手的功能。文中探讨微型钢板、穿髓克氏针固定、牵引位石膏托3种不同治疗方法在掌指骨骨折治疗中的临床疗效。方法选取掌指骨骨折患者60例共95个部位,分别平均进入微型钢板内固定、穿髓克氏针固定及牵引位石膏托3种不同治疗方法组,术后随访6～12个月,平均随访(8.1±1.5)个月,按照总主动屈曲度系统(total active flexion system,TAFS)评分评估3组临床疗效。结果微型钢板组内固定优良率为90.9%,穿髓克氏针内固定组优良率为71.4%,牵引位石膏保守治疗组优良率为55.6%,3组结果差异有显著统计学意义(P<0.05)。骨折愈合时间微型钢板组较其他2组短,差异有统计学意义(P<0.05)。切开复位感染率微型钢板内固定组为0.0%,穿髓克氏针组为15.4%(P<0.05)。结论微型钢板内固定治疗掌指骨骨折在术后关节功能恢复、骨折愈合时间、术后感染预防方面都具有明显优势,是首选的治疗方法。
