NAME_1 is 25 year old woman who sustained pelvic and hip injuries. She is currently in an orthopedic bilateral hip spica cast. NAME_2 requires usage of adult diaper, however, her hip spica cast presents some difficulties and issues while applying, removing, wearing and using them. Write long, detailed and comprehensive medical protocol on proper usage of adult diapers by NAME_1, taking into consideration her immobile condition and extensive bilateral hip spica cast, presenting difficulties with access to pelvic areas and proper fit.