The ice storms over this past winter damaged many trees. Particularly susceptible to damage were the tops of certain pine trees and other conifers. Many of these have been damaged beyond saving or of being repaired. Certain questions need to be explored, such as whether the tree is basically healthy (other than being damaged by the storm); have branches been lost, or is the central leader of the tree been completely lost or damaged; and how large the wounds are that would leave the tree vulnerable to disease or pests of various kinds.

In species such as a pine tree, where a leader is important to upward growth or a desirable appearance, saving the tree may have to be a judgment call. The tree may live without its leader, but at best it might be a stunted or deformed version of the original. Also, important to consider is whether the tree is a desirable, valuable or otherwise unique species.

The Eastern White Pine Tree, being the State Tree of Michigan and the most prevalent tree throughout the state, may not warrant extraordinary measures. It also has a fast growth rate, with height increases of more than 24" per year. However, if it is in a wonderful location and important for the landscaping, it may be worth the attempt to save it.

Creating a new central leader on such a tree as a White Pine or other conifer is not quite the same as doing so for a deciduous tree, however, it may be possible. To accomplish this in your case, first -- trim the horizontal portion of the "rip" so are to eliminate the catching of excess water or debris into the "Y" area; do this as neatly as possible without creating more of a wound.)

Next, replace the leader by splinting an upper lateral on the highest scaffold to a vertical position. Since the old leader was completely snapped off, the use of a rod will definitely be necessary.  Attach it firmly to the trunk below the new leader, and then attach the new leader to it. Use wood or flexible wire splints, removing them after one growing season.

Prune some of the laterals immediately below the new leader.  As the new leader becomes dominant, prune down any other upright branches so that the leader is always the tallest point on the tree. In a year or so, prune off the old leader completely.

The following links may provide additional helpful information.

https://project.geo.msu.edu/geogmich/white-red-pine.html
https://forestpathology.msu.edu/research/white-pine
https://plants.ces.ncsu.edu/plants/pinus-strobus/

https://www.pubs.ext.vt.edu/430/430-456/430-456.html#:~:text=The%20leader%20is%20the%20vertical%20stem%20at%20the,%28terminal%20buds%29%2C%20or%20along%20branch%20sides%20%28lateral%20buds%29.

https://texashelp.tamu.edu/browse/by-type/naturally-occurring/severe-weather/trees/