That sounds rotten, you might find the posts about magnesium supplements/ gel interesting as well as the therapy @Isaiah_40_31 suggested…here’s a link:
VES- magnesium footbaths - General - Living with Eagle
Others have had issues with scar tissue post surgery, I can’t think of anyone mentioning muscle spasms exactly, but could be wrong…cold laser therapy has helped some people with that. Otherwise it might be worth seeing a physiotherapist?
Thinking of you 
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