Tendon and Ligament

Question 1

what must be considered in tendon loading?

Answer 1

muscle contraction force and relative cross sectional area of muscle to tendon

Question 2

how does tendon loading differ from other connective tissues?

Answer 2

due to its direct attachment to skeletal muscles

Question 3

which is stronger: muscle force or tendon tensile strength

Answer 3

tendon tensile strength tends to be twice that of its muscle

Question 4

what is more common: muscle rupture or tendon rupture?

Answer 4

muscle rupture since tendon tensile strength is stronger

Question 5

tendon loading is typically what percentage ultimate stress?

Answer 5

5-10%

Question 6

what is a myotendinous junction?

Answer 6

the junction between tendon and muscle

Question 7

what are some consequences of increased tissue stiffness in dense connective tissue surrounding muscle?

Answer 7

rapid, eccentric loading can be problematic
posture- aging and sitting behaviors self-perpetuating

Question 8

if a football quarterback plants his back foot down in the ground what can this lead to due to stiff DCT?

Answer 8

dorsiflexion tension load achilles leading to a tear
very common in males age 33-55

Question 9

if a heavy box falls off the shelf and you rush to catch it what can this lead to due to stiff DCT?

Answer 9

heavy rapid eccentric load biceps rupture bc tension loaded

Question 10

cellular reaction takes place in what phase of healing?

Answer 10

inflammatory (1-7 days)

Question 11

collagen synthesis takes place in what phase of healing?

Answer 11

proliferation (7 days to 7 weeks)

Question 12

remodeling takes place in what phase of healing?

Answer 12

maturation (7 weeks to months)

Question 13

does immobilization in tendon increase or decrease water content, PG/GAG content and strength?

Answer 13

reduce

Question 14

immobilization weakens bone ligament bone complex after how many weeks in ACL?

Answer 14

8 weeks

Question 15

what is pronounced in the first 1-2 weeks with immobilization

Answer 15

tendon softening

Question 16

what is it important to remember in regards to tendon softening in immobilization?

Answer 16

patients maybe feeling better but they are very vulnerable

Question 17

where do muscle tendon injuries due to stretching or combined stretching and contraction tend to occur at?

Answer 17

myotendinous junction (MTJ)

Question 18

which is more common in adults: midsubstance tears of bone-lig-bone or avulsion

Answer 18

midsubstance tears of bone-lig-bone

Question 19

pre-epiphyseal closures are failure at…

Answer 19

epiphysis

Question 20

post-epiphysis closures are failure at..

Answer 20

MTJ

Question 21

when doe pre epiphyseal closures usually occur?

Answer 21

in your growing years

Question 22

what are the parameters for strength?

Answer 22

3-5 sets 6-12 reps

Question 23

what are the parameters for muscular endurance?

Answer 23

3-5 sets 20-30 reps

Question 24

what are the parameters for tendon?

Answer 24

3-5 sets of 30-40 reps

Question 25

what are the parameters for ligament?

Answer 25

1000’s of reps

Question 26

what are the parameters for cartilage?

Answer 26

hours of reps

Question 27

what kind of relationship do time and load have?

Answer 27

inverse