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The representative photographs showing different types of rhomboid fossa observed in Northeastern Thai clavicles. They could be classified into 4 types: smooth (Type 1), flat (Type 2), elevated (Type 3), and depressed (Type 4), respectively.
Source publication
The rhomboid fossa of clavicle is used to determine the age and sex in anthropology and forensic sciences. The variant types of rhomboid fossa on inferior surface have been reported in many races except in Thais. This study therefore was aimed at classifying the types of the rhomboid fossa in Northeastern Thais. The identified 476 Northeastern Thai...
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Introduction: The medial articular surface of dried clavicles have been studied to evaluate sex and age in many races. This morphological investigation in Thai population has never been reported. This study aimed to classify the clavicular medial surfaces and to provide their incidences. Materials and Methods: 454 dried clavicles (254 males and 200...
Citations
... [10] In North-eastern Thais(476 clavicles), the authors observed no side differences and 76.26% of clavicles showed elevated impression which is higher than that of our present study. [17] However, the smooth impression was found to be lower (0.21%) as compared to our study (20%). [17] In a study on 60 clavicles in the region of Maharashtra of India, Type IA impression was observed more commonly in 63.33%. ...
... [17] However, the smooth impression was found to be lower (0.21%) as compared to our study (20%). [17] In a study on 60 clavicles in the region of Maharashtra of India, Type IA impression was observed more commonly in 63.33%. [18] Rani et al. studied 118 adult clavicles of the Indian population and concluded that the Type IIIA (depressed and rough) type impressions were more prevalent (30.97%) and the Type IIIB (depressed and smooth) were least prevalent (1.77%) which correlates with our study of 29% and 1.5% respectively. ...
Introduction: The medial end of clavicle is connected to the upper surface of anterior end of first rib and its costal cartilage by rhomboid ligament which assist the movements of pectoral girdle as well as resist the pull of medial end of clavicle by pectoralis major and sternocleidomastiod muscles. Consequently, the attachment of it on the clavicle produces various patterns like tubercles, grooves, etc. called as the rhomboid impression. This normal variant of rhomboid impression may be interpreted sometimes as pathological lesions like necrosis, osteomyelitis, and tumour. Also, the morphology of rhomboid impression varies in different population. Such study in South Indian population is very much sparse and so this study is planned for. The objective is to it is aimed to estimate the prevalence of various morphology of rhomboid impression, to measure the anthropometry of impression and the distance from the medial end of impression to medial end of clavicle. Subjects and Methods: This descriptive study was carried in 200 adult human dry clavicles of both sides and various patterns of rhomboid impression, anteroposterior and transverse diameter of impression and distance between the medial end of impression and medial end of clavicle was measured with digital vernier caliper. Statistical analysis was done and p-value of < 0.05 is considered to be significant. Results: The most common pattern observed was depression and rough (29%) followed by elevated and rough (28.5%). The resection length of the medial end of clavicle was 11 mm from the medial end of impression to medial end of clavicle. Conclusion: The findings of the present study on the morphology and anthropometry of rhomboid impression of adult human clavicles and the resection length of medial end of rhomboid impression from the medial end of clavicle will provide guidance for the anthropologists, orthopedicians, radiologists, vascular surgeons and in forensic investigations.
... 9 Earlier studies also implied the presence of rhomboid fossa on clavicle for sex and age estimator. [10][11][12][13] The result of present study showed significant sexual dimorphism and bilateral asymmetry in which clavicles of male pointed out more values than female which resembled with other previous studies, but bilateral asymmetry of the bone had not affected sexual dimorphism. [2][3][4][5]9,[14][15][16][17][18][19][20][21] Only length of clavicle was used for sexual dimorphism in different regions of world. ...
... 4,5,[15][16][17][18] Studies resembled to our study, having mean length of right clavicle longer than left clavicle, 15,17,20 while, other pointed out the length of left clavicle was greater than right clavicle. 4,5,12,16,18,19 Unlike present study, earlier study in Nepalese population showed the left clavicle bones were longer than right ones. The same study also compared the length of Nepalese clavicles with French population, American Negros and whites, population of Amritsar and Chandigargh zones of India; and revealed clavicles of Nepalese population was longer than population of different regions of India but shorter than American whites, Negros, and French population. ...
Background:
The clavicle, modified long bone, presents morphological and bilateral variations. This may be due to genetic factors, hormones, or environmental and occupational influences. Anthropometric studies in clavicle of Nepalese population using radiograph has not been reported to best of our knowledge. This study, aimed to determine the sexual dimorphism and bilateral asymmetry of clavicle in Nepalese Population using Postero-Anterior Chest X Ray.
Methods:
Chest x-rays with normal and clearly visible both clavicles of 1260 Nepalese adults (591 male, 669 female), aged above 20 years were utilized. Inbuilt software "Computed Radiography Fuji Computer System 7" was used for measurements (in centimeter) of sternal head length, acromial end length, mid shaft diameter and length of clavicle. Demarcating point and identification point were calculated. Patients having history of clavicles fractures in the past were excluded.
Results:
All the parameters in male is greater than female which is significant except Length/Mid Shaft Diameter. Similarly, all the parameters of right clavicle is significantly greater than left clavicle in both sexes except Sternal Head Length and Mid Shaft Diameter. Demarcating point calculated from length of the clavicle (right >16.17, left >16.10 for male and right <11.20, left <10.65 for female) and Mid Shaft Diameter (right >1.33, left >1.38 for male and right <0.66 and left <0.67 for female) are important parameters to determine sex. Conclusions:The clavicle shows significant sexual dimorphism and bilateral asymmetry in Nepalese population. The result of this study is helpful to anthropologist and forensic medicine.
... In addition, a number of studies have reported that morphometric parameters of the clavicle vary between population affinities (Akhlaghi, Moradi, & Hajibeygi, 2012;Alcina, Rissech, Clavero, & Turbón, 2015;Ishwarkumar, Pillay, Haffajee, & Rennie, 2016;Králík, Urbanová, & Wagenknechtová, 2014;McCormick, Stewart, & Greene, 1991;Murphy, 1994;Patel, Shah, Merchant, Nirvan, & Shah, 2009;Spradley & Jantz, 2011). For example, previous studies have shown that the incidence of rhomboid fossae, a skeletal trait produced by the costoclavicular ligament which connects the first rib to the clavicle, may differ between the sexes and may be influenced by biological or population affinity (Bhat, Asif, Manjegowda, Radhakrishna, & Shivarama, 2015;Jit & Kaur, 1986;Kaewma, Sampannang, Tuamsuk, Kanpittaya, & Iamsaard, 2016;Paraskevas et al., 2009;Prado et al., 2009;Rogers, Flournoy, & McCormick, 2000). ...
Objectives
The present study aims to investigate the influence of environmental and functional factors associated with biological affinity and musculature on sexual dimorphism of the clavicle, and to develop population‐specific methods of sex estimation from the clavicle.
Methods
The maximum length of the clavicle (MAXL), the sagittal diameter of the clavicle (SAGD), and the vertical diameter of the clavicle (VERD) were measured. The left clavicles of 198 South African coloured individuals (108 males and 90 females) were examined.
Results
Overall, the results of this study indicate that the SAGD of the clavicle is more sexually dimorphic than the VERD in the South African coloured sample. When the black American, white American, and Greek discriminant functions were applied to the South African coloured metric data, females were more accurately classified than males overall. Population‐specific discriminant functions were created for the South African coloured sample. The original accuracy showed that females (85.5%) were more accurately classified than males (78.1%). Overall, the multivariate discriminant function demonstrated a higher correct classification of South African coloureds than the univariate discriminant functions. The results also suggest that univariate discriminant function equations are more accurate for sex estimation than univariate sectioning points in the South African coloured sample.
Conclusions
Overall, the results of the present study indicate that the clavicle is an accurate predictor of sex and its dimensions are population‐specific. Therefore, discriminant functions of the clavicle should only be used for sex estimation in forensic anthropology with the populations from which they were derived. © 2018 Wiley Periodicals, Inc.
In lieu of the pelvis and skull, multiple methods have been created and used to estimate sex from the postcranial skeleton. These include a multitude of metric methods, predominantly focusing on comparing measurements of joint surface, as well as several morphological methods. Visual inspection of both the rhomboid fossa of the clavicle and a suite of traits on the distal humerus yields high accuracy rates for sex estimation. As the distal humerus fuses relatively early, the latter method may be applicable for assessing sex in adolescents. Observations of sexual dimorphism in long bone robusticity and rugosity among archaeological populations have been used to infer sex-based division of labor and gendered activity patterns, but recent research delving into the complexities of bone functional morphology have suggested that these traits should be employed with caution for sex estimation.
1992-2012 yılları arasında Amasya Müze Müdürlüğü başkanlığında Amasya İli ve çevresinde Roma Dönemi ile tarihlendirilen arkeolojik alanlarda yapılan kurtarma kazıları neticesinde, toplam 56 bireye ait iskelet kalıntıları ele geçirilmiştir. Bireylerin 2’si (%3,57) bebek, 11’i (%19,64) çocuk, 15’i (%26,79) kadın, 13’ü (% 23,21) erkek olarak tanımlanmış ve 15 bireyde (%26,79) yeterli cinsiyet kriteri bulunamadığı için cinsiyetleri belirlenememiştir. Bireylere ait iskelet kalıntılarının paleopatolojik analizleri sonucunda, bu bireylerde travma (kırık), osteoartrit, ankilozan spondilit, rhomboid fossa, osteofit ve schmorl nodülü gibi lezyonlara rastlanmıştır. Bu çalışmada, Roma Dönemi’nde Amasya İli ve çevresinde yaşamış bu insanların sağlık yapısına ilişkin değerlendirmeler yapılmıştır.
The Khon Kaen University Human Skeleton Research Centre has a large human collection consisting of 745 modern northeastern Thai (Isan) skeletons derived from bodies bequeathed to the Department of Anatomy during the period 1979–2014. The aim of this paper is to document the collection and address the question of whether, and to what extent, the collection may be representative of local Isan people, or populations of the wider region of mainland Southeast Asia for use as a reference collection for forensic anthropology in particular but also for all other fields of research about human skeletal biology. Sex is recorded for 99.6% of the skeletons, and age at death for 91.7%. The collection consists of two-thirds males, one-third females. It includes 10 individuals less than 19 years of age, and adults ranging in age from 20 to 109 years of age. Average age at death is 62 years over the full period during which the bodies were donated. Other data available for smaller proportions of the collection include cause of death, occupation, and height and weight at the time of donation. Dates of birth are estimated to range from the late 19th Century to the most recent in 1988. Analysis of the demographic composition of the collection shows that is likely to be representative of the ancestral mix of the Isan people, and of the village farmers who still form a large portion of the Isan population. It may also represent 20th Century populations of much of Southeast Asia where agriculture dominates the economy. The collection forms a valuable resource for research on regional human skeletal characteristics for use in forensic anthropology.
