数字X线测量上肢长骨推算身高

目的应用数字X线测量上肢长骨,建立适合当代中国四川汉族人群长骨推算身高的回归方程。方法按纳入标准对365例四川汉族正常人进行身高测量及上肢的数字X线检查,测量上肢各长骨不同标志点之间的长度,用SPSS统计软件对各测量值与身高进行相关回归分析,并对回归方程进行回代检验。结果共建立27个一元回归方程以及3个多元回归方程,各方程都具有统计学意义。上肢长骨中,尺骨相关性大于桡骨,男性相关性大于女性,多元回归方程的准确性高于一元回归方程。结论放射学方法测量长骨推算身高是一项简单、实用的方法,更适合上肢尸块的个人识别,值得进一步研究。     

男性下肢长骨的测量及其最大长推算

股骨、胫骨和腓骨的人类学测量国内已有报道。用其残骨某一项指标推算该骨最大长国外已有报道,国内尚未见报道[1]。作者对股骨、胫骨和腓骨的各项指标进行了测量和统计学处理,并将所得值分别与该骨的最大长进行回归分析,建立用残骨的某一项指标推算下肢长骨最大长的回归方程。为法医人类学提供资料。表1股骨的测量(单位:mm)测量指标均数±标准误标准差变异系数最大长(Y)425.40±2.14 21.39 5.03全长(X1)421.16±2.02 20.23 4.80转子内髁长(X2)410.53±2.15 21.48 5.23转子全长(X3)399.41±2.06 20.56 5.15转子外髁长(X4)402.21±2.28 22.8…     

中国汉族成人胸骨多项测量值与身高关系的研究

目的 研究中国汉族成人胸骨多项测量值与身高的关系,建立以胸骨推算身高的方法。方法 测量135例(男100,女35)已知身高的中国汉族成年人干燥胸骨的全长、柄长、体长、柄最大宽、柄最小宽、体最大宽、体最大厚、柄厚、柄最大厚9项指标,采用多元逐步回归分析的方法,分别求出由男性(分年龄组)和女性胸骨的多项测量值推算身高的多元回归方程式。结果 所建立的4个男性(分年龄组)和1个女性胸骨推算身高的多元回归方程式,其复相关系数(R)在0.6237～0.7350之间,标准差(s)在4.5720—7.0348之间。结论 根据人体胸骨的多项测量值可以推算其身高,准确性略低于四肢长骨的同类推算;相同身高组的男女性胸骨多项测量值均存在明显的性别差异,胸骨柄长不能作为单因素推算身高的测量指标。     

综合运用法医各专业知识侦破杀人碎尸案1例

1案例资料某年11月6日,本市某海滩上发现一人体肢块。11月10日,在员当湖内发现一女性胸腹段尸块。“11.06”尸块为一人体残缺左上肢,自肘关节上方20cm处离断。中指第一指节戴一枚“仿钻石样”银白色戒指,指环部分已发黑。尸块已轻度腐败,肘关节以上表皮已脱落,前臂表皮尚完好。指甲甲床紫绀,手指表皮肿胀、皱缩。断端创缘平整,肱骨断端多处砍痕、骨碎片附着。桡骨、尺骨最大长分别为20.4cm及21.8cm。“11.10”尸块为一女性颈部至脐上段躯干,用蓝色塑料薄膜袋包装。尸块外着一紫黑色牛仔布连衣裙,内着一完好的白色胸罩。牛仔裙双袖于与坎肩结…     

四川汉族青少年肘关节数字X线影像骨龄特征研究

目的观测四川地区青少年肘关节数字X影像的骨发育特征规律,建立肘关节推断年龄的回归方程。方法拍摄608例8～18岁青少年进行肘关节数字X线片,按性别及年龄分组,选取肘关节6个骨化中心作为观测指标,对发育特征进行分级、赋值。采用SPSS 15.0统计软件对各观测值进行描述性统计学分析,建立推算年龄的回归方程。结果得出男女性青少年肘关节继发骨化中心出现、闭合的年龄范围、平均年龄以及95%置信区间等数据。一元回归方程的复相关系数(R)范围:男性0.874～0.914,女性0.883～0.954;年龄估计值标准误(SE)范围:男性0.934～1.101岁,女性0.561～0.883岁;多元回归方程R值及SE值:男性为0.946、0.750岁,女性为0.964、0.500岁。所有方程均经统计学检验与诊断,具有较好的适用性。结论本文选择的肘关节指标发育特征与年龄有相关性,其中肱骨内上髁、桡骨小头及肱骨小头骨骺均呈高度显著相关,建立的回归方程可用于相关人群年龄推断,且多元回归方程准确性更高。     

男性青少年左右侧骨骺愈合推断年龄的差异

目的比较左右侧骨骺愈合差异对推断年龄的影响。方法观察130名男性青少年全身六大关节及骨盆X线片上27个骨骺愈合指标,比较左右侧骨骺愈合程度有差异的部位及级别;左右两侧分别用多元回归方程推算年龄,做比较分析。结果76例左右侧推算年龄一致,47例左、右侧差值小于0.5岁,7例差值在0.50～1.0岁之间,94.6%左右侧推算年龄误差在0.5岁内。左右骨骺愈合差异多见于肱骨近端、桡骨远端、尺骨远端、髂嵴。结论左右愈合度的细微差异对年龄推断无统计学意义。左右骨骺愈合差别不存在一侧的偏向性。     

运用数字X线摄影法测量跟骨推算身高

目的测量跟骨侧位数字X线摄影（DR）片上相关长度指标,建立跟骨推算身高的回归方程。方法应用数字X线摄影方法,在393例（男性174例,女性219例）活体（四川汉族成年人）跟骨侧位DR片上测量5项长度指标,同时测量其身高。通过各项长度测量指标与身高的线性回归分析,建立跟骨推算身高的回归方程;并对所建方程进行身高预测值与实际值的配对t检验、残差分析、等方差性检验及共线性检验。结果共建立有统计学意义的一元回归方程10个,多元回归方程3个。回归方程的复相关系数（R）在0．653～0．218范围内,身高估计值标准误（SE）在4．59～6．68cm范围。结论本研究所建立的身高推算方程,可作为四川汉族人群跟骨推算身高的依据。     

中国人四肢长骨骨性标志间各段长度与总长关系的分析

利用碎裂的长骨片段 ,计算长骨的总长。选择中国人长骨 5 0 0余例 ,取其骨性标志分段测量记录 ,将测得的数据输入计算机 ,用社会科学软件包 (SPSS)中全回归法进行统计学处理。在得出的 33个多元回归方程中 ,方程1、 9、 18、 2 6证明了骨性标志间各段长度与总长的正相关关系 ,其余 2 9个方程是在有选择的略去 1个变量和因长骨近端、远端或两端缺损使 1个或 1个以上变量缺失的情况下得出。根据碎裂长骨片段骨性标志间的长度测量值 ,应用多元回归方程 ,可计算出长骨的总长     

西南地区成人面颅骨的性别判定

目的建立适合西南地区成人的颅骨性别判定函数。方法性别明确的颅骨67个,测量颅骨最大长、颅骨最大宽、颅高等16项指标,所得数据进行统计学分析,建立单一变量及多变量性别判定方程,并对5个无名颅骨进行回带检验。结果 16项指标中有13项存在显著的性别差异,男性大于女性,单变量函数推断性别以鼻高(男78.4%,女83.3%)、颅骨最大长(男83.8%,女73.3%)准确率较高。多变量性别判定函数以颅周长、鼻高贡献最大,判定准确率男89.2%,女90.0%。结论单变量推断颅骨性别以鼻高或颅骨最大长较为理想,但以颅周长、鼻高联合推断性别准确率更高。     

碎尸案鉴定分析1例

1案例资料1.1简要案情2001年7月19日,儋州市东干水利沟水面上发现3块人体残肢尸块。1.2尸块检验尸块为人体右上肢、左下肢及右下肢。尸块残肢粗壮,外观较新鲜,双下肢表面可见较多体毛生长,右上肢54cm长,左下肢及右下肢分别为75cm及72cm长。左足底长25cm,右足底长24.5cm。肢体外侧缘可见暗红色尸斑,压之不腿色,尸僵已缓解。肢体表面可见腐败静脉网出现。肢体截断面可见多次重复砍切痕迹,生活反应不明显,未见皮肤肌肉内卷,血管收缩等现象。骨面断端不平整,上肢从肱骨上段分离,双下肢均从股骨上段分离。右上肢掌背浅静脉处见一针眼,经放大镜观…     

Stature estimation of 3-10-year-old children from long bone lengths

Estimation of stature in adult forensic cases with available long bones of the limbs is routine, but such estimation is less common in subadult cases. Long bones from subadult cases are often used to estimate age, but in some instances stature may be helpful or even critical for identification. Few published regression equations exist for consultation in such cases. Data from the longitudinal growth study conducted by the Child Research Council in Denver in the mid-1900s are utilized to produce dual-sex and single-sex regression equations for the six long bones of the limbs (humerus, radius, ulna, femur, tibia, and fibula) and for the combined femur+tibia length. All measurements are from radiographs and are of diaphyseal length. Examples show that similar results can be obtained using a two-step process of "ballpark" estimation from published tables of the Denver data, but these new regressions allow a one-step standard error estimate for the means. Regressions are further compared with those previously published by Finnish researchers, which are generally broadly comparable. More routine stature estimation in subadult cases is encouraged both as an aid to possible identification and as a test of the available regression equations.     

Prediction of stature based on radiographic measurements of cadaver long bones: a study of the Croatian population

We tested a new approach to the stature prediction that could be used in the identification process of human skeletal remains of unknown identity. The stature of 19 female and 21 male adult cadavers was measured within 24 h after death and considered to be equal to the living stature. The antero-posterior radiographs of all limbs were taken, and the maximum length of the six long bones was measured from radiographs. There was a significant difference in the stature and maximum length of long bones between female and male cadavers (p<0.001 for all). The correlation between the stature and long bone length was the best for the humerus in females (r=0.792) and the tibia in males (r=0.891). Regression equations specific to the Croatian population were computed separately for each long bone in males and females and proven to be reliable in predicting the living stature of the individual.     

Use of regression analysis in reconstruction of maximum bone length and living stature from fragmentary measures of the ulna

The present study deals with the computation of linear and multilinear regression formulae for reconstruction of ulnar length and stature through eleven fregmentary measures pertaining to linear, transverse, sagittal and circumferential dimensions of the ulna bone. A total of 288 ulnae, belonging to 82 male and 62 female documented skeletons have been measured for this purpose. The data reveals a non-significant bilateral variation in the fragmentary measures of the ulna while the sex differences are highly significant at 1% level. Keeping this in view, separate regression equations have been formulated for both the sexes. The study further highlights that the upper shaft circumference is the best predictor of ulnar length among all the fragmentary measures while stature can best be reconstructed using the breadth of olecranon. However, the maximum length as a non-fragmentary measure provides the most accurate estimate. In order to increase the accuracy in prediction of ulnar length and stature, multiple regression equations have also be constructed and used.     

Stature estimation from long bone lengths in a Thai population

The estimation of stature is a very important step in developing a biological profile for forensic identification. However, little previous work has been done on stature estimation among modern Thai people, despite a growing number of forensic cases in Thailand in recent years. The current study was carried out on a sample of 200 skeletons from a northern Thai population (132 males and 68 females), ranging in age from 19 to 94 years. The maximum lengths of six long bones (humerus, radius, ulna, femur, tibia and fibula) were measured and stature reconstruction formulae generated using linear regression. These equations were then tested on a holdout sample of 15 females and 15 males. Results reveal that the three lower limb bones are the most accurate estimators of stature among the males, with the fibula equation producing the lowest standard error of the estimate (SE=4.89cm), followed by the femur (SE=5.06cm). Results for females were mixed. The femur produced the lowest standard error among the females (SE=5.21cm), followed by the radius (SE=5.63cm). However, when tested against the holdout sample (n=30), the femur equations were considerably more accurate, with a mean absolute error of 3.5cm and a median absolute error of 2.4cm. Females exhibited a higher standard error of the estimate than reported in many previous studies. This higher error may be the result of a recent secular trend in stature affecting the females of our sample somewhat more than the males.     

Sexual Dimorphism of the Arm Bones in a Modern Greek Population

Abstract: Several studies have shown that sex determination methods based on measurements of the skeleton are population specific. Metric traits of the long bones of the arm have been reported as reliable indicators of sex. This study was designed to determine whether the three long bones of the arm can be used for sex determination on a skeletal population from Greece. The material used consists of the arm bones of 204 adult individuals (111 males and 93 females) coming from the Modern Human Skeletal Collection of the University of Athens. The age range is 19–96 years for males and 20–99 years for females. The maximum lengths and epiphyseal widths were measured in the long bones of the arm (humerus, radius, and ulna). The discriminant analysis of the metrical data of each long bone gave very high discrimination accuracies. The rate of correct sex discrimination based on different long bones ranges from 90.30% (ulna) to 95.70% (humerus). In addition, intra‐ and inter‐observer error tests were performed. These indicated that replication of measurements was satisfactory for the same observer over time and between observers. The results of this study show that metric characteristics of the arm bones can be used for the determination of sex in skeletal remains from Greece and that bone dimensions are population specific.     

Stature estimation from radiographically determined long bone length in a Spanish population sample

The estimation of stature from of a variety of bones is an important aspect of forensic work. In order to obtain reliable results, it is important to have comparative data obtained from the same population group as the skeletal remains. However, lack of up to date information on the population groups of Southern Europe makes the estimation of stature from bones in this area subject to possible error. In this study, the stature of 104 healthy adults from Spain was measured, and an anteroposterior teleradiograph of the right lower and the right upper limb of every subject in the study was made in order to measure the lengths of the femur, tibia, fibula, humerus, cubitus and ulna. Pearson's regression formulae were obtained for both limbs. In males, we found the femur to be the most accurate predictor of stature (R = 0.851), whereas in females best results were obtained with the tibia (R = 0.876).     

A Method for Estimating Sex Using the Clavicle,Humerus, Radius,and Ulna

Sex estimation from skeletal remains can be an important part of preliminary identification. The best source of information for estimating sex is the pelvis but it is not always available for analysis. For these cases, a probabilistic sex estimation method is presented using combinations of standard and alternative measurements of the clavicle, humerus, radius, and ulna. Various equations are developed that are not population specific and that are applicable in various recovery scenarios. The equations were tested using four independent samples (n > 370), including a forensic sample. Allocation accuracies vary by test sample and equation and are consistently good (87.4–97.5%) except for a sample of very small males that show the extreme effects of poverty and mortality bias. For many of the cases where allocation was incorrect, the probabilistic approach indicated that no confidence should be placed in the incorrect allocation and the unknown should be classified as sex indeterminate.     

Stature reconstruction using fragmentary femora in South Africans of European descent

It is well documented that the intact femur has the highest correlation with stature and as such has been widely used in the derivation of regression equations for stature estimation. As intact femur is not always present for analyses in forensic cases, it has become necessary to derive regression equations for the estimation of stature from fragments of this bone. Few studies have presented regression equations for stature estimation from fragments of the femur. Because these equations are population specific, it was the aim of this study to derive similar equations for estimation of stature and maximum length of femur from measurements of the femur of South Africans of European descent. A sample of 50 male and 50 female complete skeletons were obtained from the Raymond A. Dart Collection of Human Skeletons. Total skeletal height for each of the skeletons was calculated using the Fully's method. Six variables were measured on each femur which included the vertical neck diameter, upper breadth of femur, epicondylar breadth, bicondylar breadth, lateral condyle length, and medial condyle length. Regression equations for the estimation of stature are presented. The range of standard error of estimate for these equations (3.71-5.31) was slightly higher than those obtained for intact long bones (2.13-3.79). It is therefore suggested that in the absence of intact femur, regression equations derived from the present study can provide a reliable estimate of adult stature.     

Stature Estimation Formulae for Nigerians

Abstract:  In stature estimation, long limbs and the stature formula of Trotter and Gleser easily come to mind. In the recent past, a lot of workers have established formulae specific to their populations using whole length of limbs, fragmented bones, circumference of long bones, and even length of the vertebrae. We have in this work used tibia length, height of subjects, and the regression models to establish formulae specific to Nigerians. We measured height and tibia length of 200 (96 male and 104 female) adult Nigerians. The tibia length was measured from upper limit of the medial condoyle to the tip of medial malleolus using a measuring tape calibrated in meters while the height of individuals were also measured using meter scales. All measurements were made by one person, to avoid interobserver error, and repeatedly until a constant value is obtained. We obtained general formulae for males and females which compares favorably with that of Duyar and Pelin, and can be relied upon.