The problem is Winstrol - stanozolol has a negative effect on the the output of synovial fluid from the synovial membranes. these membranes secrete synovial fluid into the joint cavities. This fluid helps the joints to move with out friction much like oil in a motor. Once this fluid brakes down or in this case dries up you get friction. This friction can cause life lasting effects on your joints. So yes after time the synovial fluid will come back after the use of Winstrol - stanozolol, but the effects it caused to your joints can be for ever.
Its always wise to use Winstrol - stanozolol with somthing like trenbolone or Deca-Durabolin - nandrolone decanoate - which have a positive effect on the synovial membranes. Or some other otc sup that will add with this.