Biomechanics

Question 1

The moment

Answer 1

A force applied plus the moment arm

Question 2

Moment arm:

Answer 2

The distance from center of a joint to the muscle attachment site. Moment arm = force x distance

Question 3

joint reaction force:

Answer 3

Summation of the separate moments and force affecting a contracting muscle

Question 4

Slower stretch

Answer 4

Less resistance. Associated with creep. The slower, longer the squeeze, the more complete expression of fluid from within muscle matrix.

Question 5

Internal and external forces can:

Answer 5

Fracture bones, dislocate joints, disrupt muscle and connective tissue

Question 6

Consistent repetitive stress can cause an alteration to the structure in the form of:

Answer 6

Structural failure, deformation, adaptation

Question 7

What behavior can create as many problems in a structure as the original insult?

Answer 7

Guarding

Question 8

Always check a joint ___ and ____ when assessing viscerosomatic dysfunction

Answer 8

Above and below

Question 9

biotribology is what

Answer 9

study of biological systems, human joints

Question 10

Wolff’s law is:

Answer 10

Notion that bone is increased where needed and reabsorbed where it is not

Question 11

Hypertrophy of skeletal muscle is due to:

Answer 11

increased cross section of muscle fibers due to physical training.

Question 12

Atrophy of skeletal muscle occurs due to:

Answer 12

Disuse or functional alteration of nerve stimulus to the msucle

Question 13

Progression of OSE

Answer 13

Gait and posture, A/P Spinal Curvature (scoliosis), TART findings, Inspection (?), Percussion, Papation

Question 14

Always assess:

Answer 14

ROM, pain, stability, muscle strength/tone, note any atrophy and abnormal movements