Well, there is no treatment for such a thing as Muscle Biopsy
Disorder seeing as it does not exist. A Muscle Biopsy is a test run
to diagnose actual diseases, to distinguish wether a disease is
muscular, neurological, or neuromuscular, and if the problem is
neuromuscular a muscle biopsy helps to pinpoint the exact disorder
that is present.
Now, an alternative to a Muscle Biopsy, especially in younger
humans (since the test is extremly painful) would be a Diagnostic
Needle Muscle Biopsy instead of an actual Open Biopsy, or an
Electromyography Test (EMG) could be preformed. EMG's are very
acurate, however they only diagnose neuromuscular disorders like MS
or Muscular Dystrophy. An EMG would be completely usless if the
disease was simply muscular or neurological.