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Skeletal
Skeletal review
Term | Definition |
---|---|
articular cartilage | Strong and smooth connective tissue that covers the end of bones to reduce friction in joints |
epiphysis | The head of a bone, usually covered in articular cartilage. |
shin splints | When the periosteum, tendon, or muscle on the tibia gets partially torn and inflamed. |
shin splint treatments | Rest, ice, and strengthen leg muscles. |
red marrow | Where new red and white blood cells are formed, found in the heads of most bones |
yellow marrow | Stores fat in bones, found only in long bones |
cortical bone | Hard, dense bone that forms the outer layer; also called compact bone |
osteoblasts | Bone cells that deposit minerals to build new bone |
osteoclast | Bone cells that dissolve and recycle existing bone |
trabecular bone | Flexible, spongy bone that forms the inner layer of most bones |
growth plate | the area just below the head of a long bone in which growth in bone length occurs |
fractured growth plate | leads to warped bone growth, lack of bone growth, and stunted limbs |
compound fracture | bone breaks through the skin, most likely fracture to get infected |
comminuted fracture | fracture in which the bone is splintered or crushed |
soft callus | A web of cartilage that forms around a fractured bone. |
periosteum | The tough membrane that surrounds a bone to nourish it and allows tendons to attach. |
causes of bone atrophy | Not getting enough exercise or not getting enough vitamins and minerals. |
synovial bursa | Fluid filled sacs between joint spaces; provide lubrication and cushioning |
meniscus | A crescent-shaped chunk of cartilage between bones that absorbs shock and pressure |
osteoporosis | Loss of minerals in bone leading to fragile bones that break easily. |
risk factors for osteoporosis | Lack of vitamin D and calcium, being female, Asian, and old, not getting enough exercise, smoking and drinking. |
bursitis | Inflammation of the bursa around a joint, usually in the knees and elbows. |
causes of bursitis | Trauma, bacterial infection, irritation from overuse, or auto-immune disorder. |
rheumatoid arthritis | Swollen and painful joints, sometimes leading to deformation and twisting of the fingers. |
causes of rheumatoid arthritis | Your own immune cells attack tissue in your joints, leading to inflammation and thickening of the joint bursa. |
calcium phosphate | the mineral that makes up 70% of bone material |
osteosarcoma | Bone cancer. Bone cells grow and multiply in an out of control way. |
causes of osteosarcoma | Often due to radiation exposure but some types are genetic or caused by another disease. |
rickets | Weak and deformed bones especially during childhood. Fairly common in poor areas with malnutrition. |
causes of rickets | Lack of vitamin D which leads to low calcium absorption from food. |
Paget's disease of bone | Overactive osteoblasts and osteoclasts leading to disorganized bone formation. 3% of adults over 40 have it. Symptoms range from joint pain to massive bone deformities. |
causes for Paget's disease of bone | Viruses, genetics (more common in Europeans), air pollution seems to exacerbate it. |
Osgood-Schlatter disorder | When the tendon attached to the tibia pulls so hard that the bone either is stressed or cracks |
bunions | Painful swelling on the of the big toe when the metatarsal points outward too far. When these get severe enough, surgery is required to realign |
causes of ACL tear | Movements that cause sudden twisting to the knee like cutting, jumping, and stopping suddenly. |
grade 1 ligament sprain | A ligament gets stretched beyond normal length. This results in pain and some swelling. |
grade 3 ligament sprain | A ligament is completely torn. This results in major bruising, swelling and pain. |