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Development of the human elbow joint.

J A Mérida-Velasco¹, I Sánchez-Montesinos, J Espín-Ferra

¹Grupo de Investigación de Embriología Humana y Experimental, Departamento de Ciencias Morfológicas, Universidad de Granada, Spain. jamerida@goliat.ugr.es

The Anatomical Record

|January 25, 2000

Summary

This study establishes a clear developmental timeline for the human elbow joint, detailing key events like joint cavitation and ligament formation during embryonic and fetal development.

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Area of Science:

Embryology
Anatomy
Developmental Biology

Background:

Discrepancies exist in the established morphogenetic timetable for human elbow joint development.
Key areas of debate include joint cavitation and ulnar nerve tunnel organization.

Purpose of the Study:

To establish a precise morphogenetic timetable for human elbow joint development.
To clarify the sequence of events in elbow joint cavitation and ligament formation.

Main Methods:

Analysis of 49 serially sectioned human embryonic and fetal upper limbs.
Detailed observation of developmental stages, including O'Rahilly stages.

Main Results:

Elbow joint cavitation observed starting at O'Rahilly stage 21 (51 days).

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Annular ligament development initiated at O'Rahilly stage 21 (51 days).

Superior radioulnar joint cavity formation noted by O'Rahilly stage 23 (56 days).

Conclusions:

A definitive morphogenetic timetable for human elbow joint development has been established.
The study clarifies the timing of critical developmental events in the human elbow.