Tendonitis And Tendon Laceration Flashcards Preview

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Flashcards in Tendonitis And Tendon Laceration Deck (54)
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1

Where does the SDF tendon insert?

Divides at P1 and inserts primarily on P2

2

Where does the DDF tendon insert?

P3

3

Where does the suspensory ligament originate and insert ?

Originates from proximal MC/MT III

Insert on seasamoid bones
Extensor branch of seasmoid ligament joints common digital extensor tendon

4

What is the purpose of the endotendon?

Provides intrinsic blood supply
Has nerves, growth factors, and provides elasticity

5

What is the epitenon ?

Contiguous with endotendon, surrounds tendon

6

What is the paratenon?

Surrounds tendons NOT in a sheath

Reduces frictional forces, supplies blood vessels, repair elements

7

What do you call the stain able to be exerted on a tendon that it goes from crip pattern to straight?

Toe region

8

The toe region (crimp to straight) allows the tendon to extend by ___%

1-3

9

How much is a tendon stretched during a walk?

3-8%

10

How much is a tendon extended at a trot ?

7-10%

11

How much is a tendon extended at a gallop?

12-16%

12

How much can a tendon extend before rupture?

12-20%

13

Scar tissue formation starts out with type ____ collagen and remodels over time to induce more type ___ collagen

3; 1

14

T/F: tendons enclosed in a tendon sheath have better healing than those not enclosed

False

Tendons in a tendon sheath have less efficient healing

15

What is tendonitis?

Inflammation of a tendon

Most commonly from overused, but can be from infection/injury

16

What are the 2 mechanisms of overstrain?

Sudden overload

Repetitive microtrauma (most common) —> molecular degeneration with progressively weakens tendon

17

Percutaneous trauma can clean to serious damage to the palmar aspect of the pastern/metacarpus. Extensor tendon lacerations rarely have long term consequences through, why?

Extensor tendons are non necessary for weight bearing in the horse

18

Why tendons are most prone to tendonitis/desmitis?

SDFT and SL

Take the most load during heel strike (landing)

19

Where do tears in the synovial cavities most commonly occur?

DDFT of forelimb

Manica flexoria of hindlimb

20

What are predisposing factors for tendonitis?

Anything increasing stress on the tendon/ligament

Poor ground
Inadequate training —>muscle fatigue

Poor confirmation —> long sloping pastern
Poor hoof care —> long toes or underrun heels

Improper bandaging//boots

21

What can you often find on PE of a horse with tendonitis?

Bowing of the palmar contour of the limb

Inflammation (heat, pain, swelling, lameness)

Severe lameness initially but once inflammatory phase has passed (1-2weeks) lameness resolves rapidly

Altered angles of limbs

22

What is the BEST tool for diagnosis of tendonitis?

Ultrasound

See hypogenic areas in the tendons if there is damage

23

When is the best time to do an ultrasound for tendonitis?

One week after injury
—> allows injury to fully declare itself
—> time for inflammatory process to decrease and better visualization

24

What type of US probe do you use to visualize tendonitis?

Linear 7.5-12MHz transducer

Evaluate transverse and longitudinal planes and both limbs

25

When doing US of the palmar aspect of the cannon bone, what structures are you visualizing from superficial to deep?

SDF, DDF check ligament, suspensory ligament

26

What tendons are you visualizing from superfiical to deep when doing US at the level of the fetlock?

SDF, DDF, seasmoid ligament

27

How does acute injury of a tendon appear on US?

Enlargement
Hypoechgenicity
Reduced striation
Shape
Margin or position changes

28

How does a chronic tendon injury appear on ultrasound?

Variable enlargement and echogenicity

Irregular situated pattern — > fibrosis

29

What method of imaging can be used for a suspected tendon injury that cannot be found on ultrasound?

MRI

30

What is the treatment for tendonitis?

All treatment regimens include rest and a controlled exercise program

Cooling, support and rest