The Claim
The pectoralis major tendon in human cadavers consists of two distinct layers—anterior and posterior—with the anterior layer being longer than the posterior, and both layers merging inferiorly to form a continuous laminar structure that may influence surgical repair techniques and the tendon's biomechanical behavior.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In dead bodies, the big chest muscle's tendon has two layers—one in front and one in back. The front layer is longer, and they join together at the bottom, which might affect how doctors fix it in surgery and how it handles force.
See the scientific wording
The pectoralis major tendon in human cadavers has two layers—anterior and posterior—with the anterior layer being longer and both layers continuous inferiorly, forming a distinct laminar structure that may influence surgical repair techniques and biomechanical behavior.
What the research says
1 studyStudy: Three‐dimensional study of pectoralis major muscle and tendon architecture
The study looked at the chest muscle in dead bodies and found it has two layers in the tendon, just like the claim says, with the front layer being longer and both joining at the bottom.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.