Related Experiment Videos
[The 7th sterno-costal articulation (author's transl)]
Archives D'Anatomie, D'Histologie Et D'Embryologie Normales Et Experimentales
|January 1, 1976
Summary
This study reveals three types of sternocostal articulations in human thoracic walls, varying with age. The 7th costal cartilage articulations show distinct features in children versus adults.
Area of Science:
- Anatomy
- Morphology
- Human Biology
Context:
- The sternocostal joints are crucial for thoracic cage structure and function.
- Understanding variations in these articulations is important for clinical and developmental studies.
- The 7th costal cartilage plays a significant role in the lower thoracic cage anatomy.
Purpose:
- To categorize and describe the types of articulations at the internal extremity of the 7th costal cartilage in human subjects.
- To investigate age-related differences in these sternocostal articulations.
- To identify the presence and nature of articulating spaces within these joints.
Summary:
- A study of 200 human thoracic anterior walls identified three distinct types of articulations involving the 7th costal cartilage: lateral sternocostal, prexiphoidean sternocostal, and inter-7th costal cartilage articulations.
- Articulating spaces were observed, with only the articulation between the two 7th costal cartilages exhibiting diarthrodial characteristics; others were classified as symphyses, potentially developing non-synovial spaces with age.
- Significant age-related variations were noted, with 7th costal cartilages being closer in children, who also exhibit a unique vascular network between the sternum and these cartilages.
Impact:
- Provides detailed anatomical classification of 7th costal cartilage articulations.
- Highlights age-dependent morphological changes relevant to pediatric and adult thoracic anatomy.
- Offers insights into the developmental vascularization of the sternocostal region in children.