What is type 1 acromion?

Type 1 acromion, classified by the Bigliani classification system, is characterized by a flat undersurface. This morphology is generally associated with a lower risk of impingement and rotator cuff injuries compared to other acromion types (Type 2 and Type 3), which have curved or hooked shapes. The flat shape allows for better clearance of the rotator cuff tendons during shoulder movements. Understanding the type of acromion can help inform treatment approaches for shoulder conditions.