Read the finding
Musculoskeletal · Pattern recognition
Read-the-film · X-ray signs
9 findings. Cover the answers and work down the list — then flip it and predict the finding from the diagnosis.
Bamboo spine, syndesmophytes and sacroiliitisAnkylosing spondylitis
Pencil-in-cup deformityPsoriatic arthritis
Punched-out periarticular erosions with overhanging sclerotic marginsGout
Loss of joint space, osteophytes, subchondral sclerosis and cystsOsteoarthritis
Periarticular osteopenia with marginal erosionsRheumatoid arthritis
Looser zones (pseudofractures)Osteomalacia
Sunburst appearance with a Codman triangleOsteosarcoma
Onion-skin periosteal reactionEwing sarcoma
Punched-out lytic lesions / pepper-pot skullMultiple myeloma