Laplacian Deform modifier can fix mesh deformed by hooks or armature. In this case i show You, how to use it to smooth arms.
See my portfolio https://dziarskilisek.pl/portfolio
If You want to learn more: https://www.youtube.com/watch?v=br9hQnw6fG8
'Repeat' option should improve quality of deform. But mesh is too simple to see it.
00:00 intro
00:20 adding hook to vertices (Ctrl+H)
00:50 selection of vertices assigned to hooks
01:20 adding Laplacian Deform modifier and binding vertices