Assertion: acromion's undersurface | /r/HasProperty | 57% of population
Facets:
Source sentences:
text: I has a flat or straight undersurface (57% of population); Type II has a smooth, curved undersurface closely paralleling the superior humeral head (35% of population); and Type III has an anterior hook‐shape of the undersurface and is the least common (8% of population).