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Flashcards in Stress Fracture Deck (22)
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1

Any fracture or microfracture that occurs as the result of repetitive cyclic insults rather than by one traumatic event (load failure).

STRESS FRACTURES

- Increase in osteoclastic activity and micro-fractures of trabecular bone

2

Occurs in normal bone when increased stress occurs
Most common form you will see

Fatigue Fracture

3

Occurs in abnormal bone weakened by an underlying disease or condition (arthropathy, metabolic bone disease, osteoporosis), without increase in stress needed

Insufficiency/Fragility Fracture

4

Occurs in bone invaded by a tumor/other disease process (ie, aneurysmal bone cyst, osteomyelitis)

Pathologic Fracture

5

________-leads to decrease in bone density
Surgery, injury

Prolonged NWB

6

Decreased bone mineral density can be a result of ______

*Vitamin D deficiency

7

Responsible for osteoclast-suppressing activities and preventing osteoblastic suicide

Estrogen/Hormone levels

- A decline in estrogen triggers an osteoclast production explosion which increases bone turnover and the amount of remodeling

8

Stress fractures often develop from overuse-repeated stress of foot striking the ground

Extrinsic Factors for develpoment of stress factors

-

9

Extrinsic Factors

Change of surface
Nutritional Status/Diet
Medications
Training Regimen: Error in training or technique

10

Eating disorders
Irregular menstrual cycle
Osteoporosis

Female Triad

11

Estrogen is responsible for suppression of osteoclasts and for keeping osteoblasts alive

Estrogen

12

2nd and 3rd ____), followed by 4th and 5th

28%

- 2-4 march fractures
- 2 and 3 most common

13

Flat foot with metatarsus adductus or prominent 5th met base

Predisposed to 5th met fracture

14

5th Metatarsal: Torg Classification

No previous fracture
Acute fracture line with sharp edges

Type 1

15

5th Metatarsal: Torg Classification

No previous injury or fracture
Fracture line involves both cortices
Periosteal new bone and intramedullary sclerosis

Type 2

16

5th Metatarsal: Torg Classification

Type 3

17

Pain localized to 'N' Spot- Small area approximately the size of a nickel

Central 1/3rd most common area due to vascular supply

Navicular Stress fracture

-make non weight bearing

18

Early diagnosis and treatment ....

is key

19

Pressure to the top of the metatarsal, not the bottom, will produce pain

Metatarsals:

20

Side to side compression/squeeze test for calcaneus

Calcaneus:

21

____scan and____I can be utilized to help verify extent of fracture seen on bone scan, or help distinguish fracture from infection

CT
MRI

22

__________ of inciting activity paramount
Will reverse destructive phase
If not utilized, will develop much more extensive fracture

Rest and cessation

Limit activity for minimum 3-4 weeks

Pain is a good guide for progression to activity