How to Build a 3D Model of a Fossil Hominin Vertebral Spine Based on Osseous Material

Been, Ella; Waintraub, Tatiana; Gómez‐Olivencia, Asier; Kalichman, Leonid; Kramer, Patricia Ann; Shefi, Sara; Soudack, Michalle; Barash, Alon

doi:10.1007/978-3-030-19349-2_15

Cited by 2 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…( 1999 ) and Been, Waintraub, et al. ( 2019 ). To synthesize, the anterior and posterior vertebral body heights from T1 to T12 are measured and the sum of the anterior heights is divided between the sum of the posterior ones (A–P ratio).…”

Section: Methodsmentioning

confidence: 99%

“…Tubercle is barely pronounce or absent in R11 and R12the vertebral body. The obtained thoracic kyphosis was validated by a method based on the thoracic vertebral body height difference (TVBHD) presented byGoh et al (1999) andBeen, Waintraub, et al (2019). To synthesize, the anterior and posterior vertebral body heights from T1 to T12 are measured and the sum of the anterior heights is divided between the sum of the posterior ones (A-P ratio).Then the A-P ratio is included in a regression formula (thoracic kyphosis in females = 428.756 - 411.87 × A-P ratio; thoracic kyphosis in males = 297.114 - 272.31 × A-P ratio) whose result is the approximate angle of thoracic kyphosis (average in modern humans = 50°).…”

mentioning

confidence: 99%

See 1 more Smart Citation

How to make a digital reconstruction of the human ribcage

López‐Rey,

García‐Martínez,

Bastir

2024

Journal of Anatomy

View full text Add to dashboard Cite

Up to now, there have been no publication standardizing the digital reconstruction of the modern human ribcage from commingled costo‐vertebral material. Consequently, we designed a validated protocol based on anatomical features observed in the literature and the CT scanned ribcages of 10 adult European individuals. After quantifying the shape of these ribcages using 3D geometric morphometrics, we split each vertebra and rib within their corresponding (semi)landmarks. Subsequently, individual bones + (semi)landmarks were imported to LhpFusionBox, commingled and 3D reconstructed. To validate the accuracy of the protocol, we first reconstructed a randomly chosen ribcage three times and then compared these reconstructions to the rest of the sample. Since these reconstructions were closer to their original counterpart than to the others, the remaining sample was reconstructed once. Next, we tested the intra‐observer error during reconstructing using the Procrustes distances among the original ribcages and the reconstructions. We observed that first each ribcage reconstruction was clustered to its original counterpart and second there was a learning curve showing an improvement in the reconstruction process over time. Subsequently, we explored general size and shape differences among the original and reconstructed ribcages through a study of centroid size and a permutation test on the Procrustes distances (10,000 permutations), respectively. Specific shape differences between both groups were further examined through a principal component analysis in shape space. None of these analyses found statistical differences between the original and reconstructed ribcages (p > 0.05). Eventually, we extracted the mean shapes of the original ribcages and the reconstructions in order to visualize potential deviations caused by the anatomical considerations of the researcher. These results demonstrate that the protocol is accurate enough to be used when reconstructing a disarticulated human ribcage.

show abstract

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%