After a bad tibial plateau fracture and other issues, my leg hasnt bent past 90 in 2yrs. can i regain rom past 90 or are muscles shortened for good?

Not muscles: Complicated tibial plateau fractures that extend into the joint and are 'depressed ' >1 cm. and involve both 'sides' of the joint even w/ excellent surgery/ plating / bone grafting portend a poorer prognosis. Xrays would be very helpful. However, loss of ROM is secondary to capsular 'contraction' because of immobilization, or inadequate initial joint reduction, etc... Muscle weakness/atrophy is2nd