So when I searched Temple University PM&R curriculum page, this is what I found that made me believe that we have to do dissections:
" Under the supervision of the Department of Anatomy, Temple University Health Sciences Center, dissection of the back and the limbs is performed, with special emphasis on those aspects pertinent to Rehabilitation Medicine and Orthopedic residents. Cadaveric dissection is required for PGY2 and PGY3 residents. "