musculoskeletal injury

Question 2

3 types of cells
1) labile
2) stable
3) pernament

Answer 2

1) high rate of loss and replacment therefore high regeneration. e.g. squmous and glandular epithelial
-haemopoateic cells in bone marrow

2) non- proliferative, but can be stimulated to divide after damage e.g. osteoblasts

3) unable to divide and cannot regenerate when damaged e.g. neurons, cardiac and skeletal muscle, red blood cells

Question 3

tissue healing process of a tendon
1) inflammation (0-7 days)-

2) repair (3-60 days)-
fibroblast& type of collagen days 5. during the 4th week, fibroblast, type of collagen

3) organisation (28 - 180 days)

Answer 3

1) inflammatory cells migrate from epitendinous tissues. defect rapidly filled with granulation tissue

2) fibroblast migrate to zone of injury and begin to synthesise collagen by day 5. initially type 3 collagen produced which is laid down in random orientation.
during 4th week= intrinsic fibroblast proliferate thereby synthesising and reabsorbing collagen (tendon callus).
switch to type 1 collagen which is most abudant

3) most of orginal stregth returns 21-28 days. maximum stength by about 6 months

Question 4

what is the meaning of the mnemonic for RICE

Answer 4

used to treat soft tissue injuries
-rest
-ice
-compression
-elevation