ɪt pɹəvˈaɪdz ɐtˈætʃmənt pˈɔɪnts fɚðə sˈuːpɹəspˌɪnæɾəs,  ˌɪnfɹəspˈɪnæɾəs, ænd tˈɪɹz mˈaɪnɚ mˈʌsəlz, θɹˈiː ʌvðə fˈoːɹ mˈʌsəlz ʌvðə ɹoʊtˈeɪɾɚ kˈʌf, ɐ mˈʌsəl ɡɹˈuːp ðæt stˈeɪbɪlˌaɪzᵻz ðə ʃˈoʊldɚ dʒˈɔɪnt.
It provides attachment points for the supraspinatus,  infraspinatus, and  teres minor muscles, three of the four muscles of the rotator cuff, a muscle group that stabilizes the shoulder joint.