<prompt> Investigation of choice for spinal tuberculosis -X-rayCT-ScanOpen biopsyMRI  <response>: Ans. is d i.e., MRIInvestigations in musculoskeletal systemo Investigation of choice for AVN Hip - MRIo Best initial test for osteomyelitis - Plain x-rayo Best second line test for osteomyelitis if there is high clinical suspician and x-ray is negative - MRIo Most accurate diagnostic test for osteomyelitis - Bone biopsy and culture,o Best view for scaphoid fracture - Oblique scaphoid view of wrist,o Best view for C1-C2 vertebrae junction - Open mouth odontoid Pegs view,o Investigation of choice for ACL PCL injury - MRIo Investigation of choice to detect calcification - CT scano Investigation of choice for prolapsed intervertebral disc - MRIo Investigation of choice for spinal tuberculosis - MRIo Investigation of choice for traumatic paraplagia -MRIo Gold standard and investigation of choice for osteoporosis - Dual energy x-ray absorptiometry DEXA. 