MSK Flashcards
Cortical bone
Macro
compact, dense, solid, only spaces are for cells and blood vessels
Trabecular bone
Macro
Cancellous (spongy), network of bony struts (trabeculae), looks like sponge, many holes filled with bone marrow, cells reside in trabeculae and blood vessels in holes
Woven bone
Micro
Made quickly, disorganised, no clear structure
Lamellar bone
Micro
Made slowly, organised, layered structure
Hydroxyapatite
crystalline form of calcium phosphate
Fibrous joint
teeth sockets
Cartilaginous joint
intervertebral discs
Synovial joint
metacarpophalangeal and knee joint
articulating bones separated by a fluid filled cavity
Bursae
fluid filled sacs lined by synovial membrane
Menisci
discs of fibrocartilage
Osteoarthritis
Cartilage loss with accompanying periarticular (around the joint) bone response
Inflammation of articular (actually in contact with bone) and periarticular structure and alteration in cartilage structure
Arthroscopy
Scope inserted into joint to assess damage and remove loose bodies
Arthroplasty
knee or hip replacement
Osteotomy
cut bone to change shape/length
Fusion
usually of ankle and foot to prevent painful grinding of bones
Rheumatoid arthritis
A chronic systemic autoimmune disorder causing a symmetrical polyarthritis
Tenosynovitis
inflammation of tendons
Osteoporosis
A systemic skeletal disease characterised by low bone mass and a micro architectural deterioration of bone tissue, with a consequent increase in bone fragility and susceptibility to fracture.
Bone mineral density more that 2.5 standard deviations below the young adult mean score
Osteopenia
pre-cursor to osteoporosis characterised by low bone density
BMD between 1-2.5 standard deviations below the young adult mean value
Osteomalacia
poor bone mineralisation leading to soft bone due to lack of Ca2+ (adults form of ricket’s)
Autoimmune Rheumatological Disorders
an autoimmune disease is a pathological condition caused by an immune response directed against an antigen within the host
Systemic lupus erythematosus
an inflammatory, multisystem autoimmune disorder with arthralgia and rashes as the most common clinical features, and cerebral and renal diseases as the most serious problems
Antiphospholipid Syndrome (APS)
Syndrome characterised by thrombosis (arterial or venous) and/or recurrent miscarriages with positive blood tests for antiphospholipid antibodies (aPL)
Sjorgrens syndrome
Chronic inflammatory autoimmune disorder
characterised by immunologically mediated destruction of epithelial exocrine glands, especially the lacrimal (eyes) and salivary glands