waldoputty
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Cutting in any way shape or form is a type 4 injury. Type 3 is when there is no cutting but damage to the exterior support system and type 2 is a stretch or crush where the exterior remains intact. Type 1 is partial or short term palsy.
We know he had a type 2 and there is no way that it is 'similar' to cutting the nerve and suturing it back together. I'd have to go back and look but we are talking upwards of a 40% less chance of a complete or near complete recovery of strength and function.
If I remember correctly, in the study that compared different surgeries, suturing resulted about 75% of patients recovering while the chemical injection (kill bottom part of nerve) was about 88% patients recovering to useful function without noticeable issues. That is not a big gap. If I have to guess, the chemical injection is pretty close to stretching that caused the bottom part of the nerve dying.