I am poured out like water, and all my bones are out of joint: my heart is like wax; it is melted in the midst of my bowels.
Poured out like water. As in Psalms 22:12-13 He described His troubles from without, so here, and in Psalms 22:15, He describes His troubles from within. To be "poured out like water" is to be utterly dissolved as to strength. The Israelites at Mizpeh poured out water in token of their utter powerlessness (1 Samuel 7:6; 2 Samuel 14:14).
My bones are out of joint - through being distended on the cross; literally, 'all my bones have separated themselves' (from paarad (H6504)) from one another: they scarcely cohere together.
My heart is ... melted - as is the case with one ready to sink (Joshua 7:5).
Like wax melting by the fire (Psalms 68:2), so Messiah's heart melted at the hot indignation of Yahweh against our sins and Him who bare them.