Exam 1 - Meniscus

Question 1

Meniscus

Answer 1

"Meniskos-meaning crescent"
Function
- stability
- shock absorption 
- lubrication
- proprioception

Question 2

Meniscus anatomy

Answer 2

• fibrocartilage
• wedge
• attached to tibia

Question 3

Medial meniscus

Answer 3

• c shaped
• attaches to Transverse ligament
• coronary Ligaments
• MCL & joint capsule

Question 4

Lateral meniscus

Answer 4

• circular
• Transverse ligament
• coronary ligaments
• no connection to LCL
• more mobile

Question 5

Meniscus biomechanics

Answer 5

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Question 6

Medial meniscus 
(Biomechanics)

Answer 6

Medial:

• less mobile
• MCL & joint capsule
• semimembranosus to posterior horn
• mechanoreceptors in anterior and posterior horns

Question 7

Lateral meniscus
(Biomechanics)

Answer 7

• more mobile
• bend/stretch, doesn’t break
• no LCL attachment

Question 8

Meniscus circulation

Answer 8

• medial and lateral geniculate arteries
• perimeniscal plexus
• joint capsule

Question 9

RED ZONE

Answer 9

Outer part of meniscus - blood vascularity

Question 10

Meniscus injuries

Answer 10

• torsion
• excessive flex, ext, translation
• open or closed chain
• contact or non contact
  DIAGNOSIS
• Joint line pain
• catching, popping, locking
• increase or decrease swelling
  TESTS:
• mcmurrays
• apley’s
• Rule out other areas
  TREATMENT:
• surgical:
  Repair: difficult, time consuming
  Debridement: 40% less thick under
  meniscus, more trauma
• nonsurgical

Question 11

Lateral compartment articulate rapid deterioration

Answer 11

• follows partial meniscotomy

Question 12

Joint kinematics

Answer 12

Therapeutic exercises:

• unloaded motion
• CPM study
• synovial flush
• oxygen
• envelope of function
• body wants to heal itself