A. Multiple myeloma is a malignant, clonal disorder of plasma cells that originates in the bone marrow. Itâs a relatively common disorder, accounting for 1% of all malignancies and 10% of all hematologic malignancies in adults.
torsion, n 1. , motion or state of torque in which one end of an anatomical component is twisted about its longitudinal axis as the opposite end is either immobile or moves in the opposite direction.
torticollis. a contracted state of the cervical muscles, producing torsion of the neck; the deformity may be congenital, hysterical, or secondary to conditions such as pressure on the accessory nerve, inflammation of glands in the neck, or muscle spasm. Called also wryneck.