____ 5. Malignant tumor that develops from bone marrowand occurs most commonly in adolescent boys

____6. Metabolic disease that is a form of acutearthritis characterized by excessive uric acid in blood and aroundthe joints

____ 7. Rupture of the nucleus pulposus between twovertebrae

____ 8. Skeletal disease affecting older adults; alsocalled osteitis deformans

____ 9. Chronic, systemic disease characterized byinflammatory changes in joints and related structures, resulting incrippling deformities

____ 10. Fragment of a necrosed bone that has becomeseparated from surrounding tissue

____ 11. Increased curvature of the thoracic region ofthe vertebral column, leading to a humpback posture

____ 12. Abnormal sideward curvature of the spine to theleft or right

____ 13. Autoimmune neuromuscular disorder characterizedby severe muscular weakness and progressive fatigue

____ 14. Damage incurred to the capsule of the shoulderjoint that is reinforced by muscles and tendons

____ 15. Trauma to a muscle from overuse or excessiveforcible stretch

____ 16. Puncture of a joint space with a needle toremove fluid

____ 17. Visual examination of the interior of a jointperformed by inserting an endoscope through a smallincision

____ 18. Forward curvature of the spine in the lumbarregion, leading to a swayback posture

____ 19. Removal of necrosed bone that has becomeseparated from surrounding tissue

____ 20. Spasmodic contraction of neck muscles, causingstiffness and twisting; also called wryneck