Muscle & Bone Basics: True or FalseOnline version Quick true/false quiz about bones, muscles, and joints. by Rania 1 Rickets is caused by a vitamin A deficiency. Yes No 2 The patella is the kneecap. Yes No 3 Osteoporosis is a condition where bones become porous and fracture easily. Yes No 4 Dislocation is a damage to muscle, tendons, or ligaments due to overuse or overstretching Yes No