Poker back

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poker back --> spondylitis deformans

arthritis and osteitis deformans involving the spinal column; marked by nodular deposits at the edges of the intervertebral disks with ossification of the ligaments and bony ankylosis of the intervertebral articulations, it results in a rounded kyphosis with rigidity.

Synonym: bechterew's disease, poker back, strumpell's disease.