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Identification of human second, third, and fourth metatarsal bones.
The Anatomical Record
|November 1, 1983
Summary
Distinct grooves on the lateral side of the second (SMT), third (TMT), and fourth (FMT) metatarsal bones offer unique characteristics. These anatomical landmarks can aid in differentiating these foot bones, particularly in forensic investigations.
Area of Science:
- Anatomy
- Forensic Anthropology
- Biomechanics
Background:
- The lateral aspects of metatarsal bases are crucial for foot structure and function.
- Understanding anatomical variations is key in identification processes.
Purpose of the Study:
- To describe and analyze the grooves present on the lateral side of the second, third, and fourth metatarsal bases.
- To evaluate the utility of these grooves in distinguishing between these specific metatarsals.
Main Methods:
- Morphological examination of the lateral surfaces of the second (SMT), third (TMT), and fourth (FMT) metatarsal bones.
- Detailed measurement and angular analysis of the grooves present on each bone.
Main Results:
- Consistent and distinct grooves were identified on the lateral bases of the SMT, TMT, and FMT.
- The SMT groove forms an angle of 85-111 degrees, TMT 57-72 degrees, and FMT 37-54 degrees with the bone base.
- Significant differences in groove orientation and location were observed between the three metatarsals.
Conclusions:
- The described grooves on the SMT, TMT, and FMT are reliable anatomical markers.
- These distinct characteristics can be valuable for the identification and differentiation of these metatarsals in forensic contexts.