Fig. 5.

Maximum principle stretch and normalized orientation index $\mathit{NOI}$ in each element for a representative anteroinferior capsule at (a) referential configuration, and (b)–(d) deformed configurations of $60\hspace{1em}\mathrm{deg}$ of abduction accompanied by (b) $0\hspace{1em}\mathrm{deg}$, (c) $30\hspace{1em}\mathrm{deg}$, and (d) $60\hspace{1em}\mathrm{deg}$ of external rotation. The arrows on each element show the direction of the maximum principle stretch. The black lines on the $\mathit{NOI}$ contours separate the capsule sub-regions (b).