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Development of the human wrist joint ligaments
J A Mérida-Velasco1, J D Garcia-Garcia, J Espín-Ferra
1Departamento de Ciencias Morfológicas, Universidad de Granada, España.
The Anatomical Record
|May 1, 1996
Summary
This study details the developmental timeline of human wrist joint ligaments, from initial formation to full development by week 10-13. These findings provide insights into carpal motion and the origins of wrist injuries.
Area of Science:
- Embryology
- Anatomy
- Developmental Biology
Background:
- Limited research exists on human wrist joint ligament development.
- Traditional anatomy descriptions often omit deep ligamentous structures.
- The articular disc is the most studied wrist ligamentous structure.
Purpose of the Study:
- To establish a morphogenetic timetable for human wrist joint ligament development.
- To describe the sequential formation and maturation of wrist ligaments.
- To correlate ligament development with carpal motion and injury origins.
Main Methods:
- Analysis of 35 serially sectioned human embryonic and fetal hands.
- Observation of ligamentous structures during embryonic development stages (O'Rahilly's stages).
- Correlation of developmental timing with specific weeks of gestation.
Main Results:
- Interosseous intercarpal ligaments form from mesenchyme, distinguishable by week 9.
- Collateral, palmar radiocarpal, and ulnocarpal ligaments develop by week 10.
- Dorsal radiocarpal ligament development begins by week 10, completing by week 13.
- The articular disc forms by O'Rahilly's stage 23 and is complete by week 10.
Conclusions:
- A detailed developmental timeline for wrist joint ligaments has been established.
- Understanding ligament morphogenesis can elucidate carpal biomechanics.
- This research may contribute to explaining the etiology of wrist injuries.