Bone Healing (Exam 1) Flashcards Preview

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Flashcards in Bone Healing (Exam 1) Deck (19)
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1
Q

Form bone matrix and synthesize type I collagen.

A

Osteoblasts

2
Q

90% of mature skeletal tissue. Control extracellular concentrations of calcium and phosphorus.

A

Osteocytes

3
Q

Bone resorption cells.

A

Osteoclasts

4
Q

Normal, mature lamellar bone.

A

Type I

5
Q

Weak, fragile, immature woven bone. Found in newborns, embryos, bone tumors.

A

Type II

6
Q

Lifelong activity that responds to mechanical stress (torsion, bending, compression).

A

Wolff’s Law

7
Q

Inflammation and hematoma formation. 24-48 hours.

A

Phase I

8
Q

Chondrocyte formation and angiogenesis.

A

Phase II

9
Q

Cartilage and calcification.

A

Phase III

10
Q

Cartilage removal.

A

Phase IV(4)

11
Q

Bone formation.

A

Phase V(5)

12
Q

Bone remodeling (may take several years).

A

Phase VI(6)

13
Q

Decreased rate of normal remodeling after slightly longer than one week.
By 3 months bone strength only 55%-60% of normal.

A

Effects of Immobilization

14
Q

Slower rate than expected.

A

Delayed union

15
Q

Healing process has stopped.

A

Nonunion

16
Q

Nonatomic Position

A

Malunion

17
Q

Tobacco, Malnutrition, Poor vascular supply, Infection, Inadequate reduction.

A

Factors influencing bone healing.

18
Q

Rehab Goals Bone Healing

A
Overall fitness.
Motion of unaffected joints. 
Minimized atrophy.
Isometrics and EMS.
Improve muscular strength.
Protect healing structures.
19
Q

Treatments after immobilization of bone.

A

Thermal agents for motion/circulation.
Isometrics, Concentrics, Eccentrics, Isokinetics, CKC
Balance, Coordination, Proprioceptive
Cardio Rehab