Meniscus Injuries
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| Where is the meniscus located? | On medial and laterl tibial plateus
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| Where is the attachment? | Periphery by cononary ligament
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| What are the functions? | 1.Stability-make stibial plateaus are congruent) 2.Shock absorption-Load transmission distribute pressure evenly 3.Nurtition 4.Lubriction 5.Controls femoral/tibial arthrokinematic motion
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| Some characteristics of meniscus are? | Elastic cartilage which cmpresses and then returns back to original state
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| Where else is elastic cartilage found? | Disc
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| What is the blood supply? | Mostly avascular-only blood supply at the out rings of meniscus Red-Red
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| What are the zones? | Red on Red-outside. Red on White-middle, White on White-inside
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| What are the main characteristics of the Medial meniscus? | C-chaped, wider curve, attach ant. to lat. meniscus, MCL, ACL, and semimembranous, and injured more often because of all its attachments
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| What are the main characteristics of the Lateral meniscus? | O-shaped, narrow curve, attach to medial meniscus and PCL, injured less frequently because it is more mobile
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| What are the 5 main types of tears? | 1.Horizontal 2. Longitudinal-Bucket handle 3.Degenerative 4.Flap-parrots beak 5.Radial-hon tear
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| What pt do most tears happen? | Traumatic tears in younger pt (55-90%) caused by rotational twisting injury
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| What happens when adults tear? | Degenerative tear caused by squatting or getting out of a car(insignificant activity)
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| What is the mechanism of injury? | Non contact WB w/ combined forces of knee flex, rotation, compression, and shearing forces
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| What is it most commonly injured with? | 55% chance of meniscal injury with ACL and MCL disruption
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| What are some clinical symtoms? | History of a twisting injury with c/o -pain(can describe what they where doing when pain started) -locking of knee -catching -swelling of knee intracapsular
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| What is present with a Bucket Handle Tear? | 1.Required repair or removal 2.Cannot fully extend knee-handle gets outside capsule 3.Flap-into intracondyle notch
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| What is present with a ant/post horn tear? | 1.Radial 2.Horizontal 3. a. catching, b. knee unstable c. harder to localize pain 4.Usually quads atrophy 5.Intermittant swelling
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| What are some diagnostic tests? | -Arthroscope - Camera inserted into joint capsule -Arthrogram - inject fluid dye into joint -CT scan -MRI -Manual Tests
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| What position is the pat in for the Apley's test? | Pt is prone and affected knee flex at 90 degrees
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| What position is the PTA in? | For distraction - stabilize distal femur witha strap or hand other hand grasps distal tabia and pulls it into distraction w/ IR/ER force on tibia
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| WHat are you looking for with Apley's distraction? | Pain signifies the possibility of a ligament tear
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| What is the PTA position for the compression test of Apley's? | One hand stabilizes distal femur other hand applies a compression force w/ IR/ER on tibia
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| What are the results with a compression Apley's | presence of a meniscal lesion
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| What is the McMurray test? | To reproduce sysmtoms of a tron meniscus
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| What position is the pt in? | Supine w/hip and affected knee fully extended
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| What is the position of the PTA for Medial meniscus McMurray? | Apply a valgus force to the knee with one hand while aplying external rot. force on the tibia while extending the knee is applied with other
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| What is the position of the PTA for Lateral meniscus McMurray? | Apply a varus force with IR of tibia
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| What are the results of the McMurray Test? | with either internal or exteral rotation of the knee, if a tear is present the pt may experience pain and an audible or palpable snap or pop
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| What position is the pt in for the Bounce home test? | Pt is supine w/affected knee in flex in the air
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| What position is the PTA in for the Bounce home test? | Supporting pt leg w/hand passively extend the knee to full ext
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| What are the results of Bounce home test? | The knee may not fully exted because the torn tissue blocks ext and creates a rubbery springy end feel
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| What may indicate a meniscal tear? | History of twisting knee injury, swelling locking of the knee, pain and catching
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| What test is used to reporduce symptoms of torn meniscus is called what? | McMurray Test
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| What test is used to determine if the meniscus is preventing knee ext? | Bounce Home Test
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| What surgical procedures leads to limited early WB early limited full knee flex and generally slower advances with CKc ex in rehab? | Meniscal repair
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Created by:
demiller243
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