Exam 1 Flashcards
(173 cards)
How long does it take for bone to achieve clinical union?
three weeks
What are sources of bias in clinical research?
- examiner
- Patient being assessed
- Measurement device
- Examination procedure
- Clinical importance of differences
What are sources of error in clinical reasoning?
- Pragmatic inferences
- Considering too few hypotheses
- Failure to sample enough information
- Confirmation bias
- Errors in detecting covariance
- Confusing covariance with causality
- Confusion between deductive and inductive logic
- Premise conversion
Joint Pain of Systemic Origin
- awakens the patient at night
- typically is described as deep-aching or throbbing
- may be reduced by pressure
Symptoms include:
- jaundice
- migratory arthralgias
- skin rash
- fatigue
- unexplained weight loss
- low-grade fever
- muscular weakness
- cyclical, progressive symptoms
- hx of infection
Joint Pain of Musculoskeletal Origin
- decreases with rest; “stiff”
- may be described as “sharp”
- reduced or eliminated when stressful action is stopped
- may increase with activity
Frish “5-5” format
- Inspection
- Function
- Palpation
- Neurological Examination
- Special Tests
Composite Motion
swing combined with spin
Consequential Movement
spin due to successive swings
Cyriax Interpretation for Resisted Motion
- painless and strong = no lesion
- painful and strong = minor lesion
- painful and weak = major lesion
- painless and weak = complete rupture
Strength/Training Principles
0-3 weeks = neural adaptation
6-12 weeks = muscle response
10-12 weeks = tendon response
Tendonitis
- macrotrauma and inflammatory
- single event
- extrinsic overload
- macroscopic injury (ie bleeding)
- significant event
Tendonitis Timeline
- acute = less than 2 weeks
- subacute = 2-6 weeks
- chronic = 6 or more weeks
Tendinosis
focal area of intra-tendinous degeneration that is initially asymptomatic and may remain such unless a specific stress is brought forth
- microtraumatic and degenerative
- repetitive action
- intrinsic trauma
- often eccentric demand
- stabilizing/absorbing
What are the three areas of potential tendonosis?
- extensor radialis brevis tendon
- supraspinatus tendon
- patellar tendon
Tenosynovitis
inflammation of paratenon surrounding tendon
Treatment of Tenosynovitis
wrist cockup splint and NSAIDs for 3-4 days
Stress-Strain Curve
1% = toe-in region 1-3% = linear region 3-6% = failure 6-8% = complete rupture
Effects of Aging on Tendon
- increased cross links
- tougher collagen
- decreased tensile strength (stiffness and weaker)
- fewer enzymes - slower turn over and collagen deposition
Repair Process (macrotrauma)
- inflammation = 3-5 days
- collagen generation = 5-21 days
- proliferation followed by cross linkage
- maturation is long term (months) “Wolff’s Law”
Repair Process (microtrauma)
- repetitive loading - submaximal activity - function
- minimal reparative response (failed response)
- often vascular mediation
Tendon Composition
- Collagen - Type 1 - 25-30%
- Elastin - 2% - decreases with age
- Water - 70+%
Note: fibroblasts control healing
Principle 1
The Challenge of Homeostasis; Equilibrium of Exercise (i.e. patient must be challenged enough to properly load the tendon, but not overly challenged to cause re-injury)
Principle 2
Transitions (i.e. most injuries occur during transitions); Wolff’s Law
Principle 3
Pick Your Parents Wisely; impact on genetics, aging, adaptability