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The posterior surface of the scapula is found on the backside of the arm and faces outwards. It is marked by several landmarks that are important for the anatomy and biomechanics of the shoulder region.

Markings Of The Scapula Bone

• It has three borders, including a superior, lateral and medial border.
• It also has three angles, including a superior, lateral and medial angle.
• 2 surfaces, including a posterior and anterior surface.
• It is a site of origin for the majority of the rotator cuff muscles of the shoulder.
• The posterior surface contains a suprascapular notch, spine of the scapula, superior angle, superior border, and supraspinous fossa.

Functional Significance Of The Scapula

The scapula is an important structure for shoulder biomechanics. Its posterior surface is a site of origin for the majority of the rotator cuff muscles, which help stabilize the shoulder joint and enable shoulder movement. The superior angle, superior border, and supraspinous fossa all contribute to the overall stability of the shoulder joint. The posterior surface also contains a suprascapular notch, which can serve as an attachment site for the suprascapular nerve, contributing to shoulder proprioception.

Conclusion

In conclusion, the posterior surface of the scapula is marked by many important landmarks with functional implications for shoulder biomechanics. It contains three borders, three angles, two surfaces, and is a site of origin for the majority of the rotator cuff muscles. Additionally, the suprascapular notch serves as an attachment site for the suprascapular nerve, contributing to shoulder proprioception.