OA and Surgical Repair of KaNee Flashcards
What surfaces are involved with OA?
the 3 compartments (medial, lateral and patellofemoral)
What are the subjective findings of OA?
- insidous onset of pain/stiffness
- pain with WB
- complaints of buckling, locking or giving away
- hard time climbing or descending stairs
What are the objective findings of OA?
- angular deformity thru knee
- effusion
- tenderness along joint lines
- loss of AROM in capsular pattern
What is the prognosis of OA?
a progressive condition
- can be controlled with external forces
- severe functional limits and pain at rest or at night = surgery needed !!!
What is stage 1 of OA?
min disruption
already 10% cartilage loss
What is stage 2 of OA
joint space is narrowing
cartilage is starting to break down
occurence of osteophytes
What is stage 3 of OA?
Mod joint space reduction
Gaps in the cartilage can exand till they reach bone
What is stage 4 of OA?
joint space madly reduced
60% of cartilage already lost
large osteophytes
What is the clinical diagnosis of knee OA?
- over 50 y/o
- stiffness over 30 min
- crepitus
- bony tenderness
- bony enlargement
- no palpable warmth
What is the sensitivity and specificity if there’s 3 or more clinical dx?
sensitivity - .95
specificity - .69
What are the lifestyle management of OA?
- weight loss
- exercise program
- ambulatory assist devices
- insoles
- unloaders
What is the exercise program for OA?
- PT referral
- quads strength
- ROM exercises
- low impact
What are the different unloaders for OA?
varus - bowlegged
valgus - knock kneed
What is the biomechanics of an unloader?
- energy storage and BW support during grav assisted knee flexion
- that energy returned to body during antigrav motion
What does literature say regarding the brace models for OA?
Reduced predicted knee joint loads (by 30-50%) across all structures
- at knee flexion angles > around 30 deg during DKB
