Purposes Flashcards

1
Q

Ligament

A
  • Act as a **mechanical constraint **
  • Prevent **undesired movement **
  • Permit limited amounts of desired movement
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2
Q

Bursae

A

Reduce friction

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3
Q

Articular Discs

A
  • Shock absorbers
  • Assist lubrication
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4
Q

Acetabular labrum

A

deepens socket (increases stability)

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5
Q

Acetabular fat pad

A

proprioception

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6
Q

Close packed position of the hip joint

A

Maximum area of contact
Ligaments are taut (stability)

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7
Q

Iliofemoral inferior band

A

limits extension, and external rotation

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8
Q

Iliofemoral superior band

A

limits extension, external rotation, adduction

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9
Q

Pubofemoral

A

limits extension, external rotation, abduction

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10
Q

Ischiofemoral

A

limits extension, internal rotation, abduction

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11
Q

Ligamentum teres

A

Proprioceptive

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12
Q

Greater trochanteric bursae

A

Reduce friction

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13
Q

Illiopectineal bursae

A

Reduce friction

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14
Q

Patella

A

mechanical advantage for knee extension

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15
Q

Synovial Membrane

A

Communicates with some bursa
Lines the joint capsule

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16
Q

Fibular collateral ligament

A
  • Limits: extension and lateral rotation
  • Prevents: adduction
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17
Q

Tibia collateral ligament

A
  • Limits: extension and medial rotation
  • Prevents: abduction
18
Q

Popliteofibular ligament

A

Limits: lateral rotation of the tibia

19
Q

Patella ligament

A

mechanical advantage in knee extension

20
Q

Oblique Popliteal

A

Strengthens central posterior joint capsule

21
Q

Arcuate Popliteal

A

Strengthens inferolateral posterior joint capsule

22
Q

Anterolateral ligament

A

Stabiliser for rotation of the tibia?

23
Q

Anterior Cruciate Ligament

A

Limits:

anterior slide of tibia on femur

medial rotation

24
Q

Posterior Cruciate Ligament

A

Limits:

posterior slide of tibia on femur

medial rotation

25
Q

Medial & Lateral Meniscus

A

Shock absorption

Increase congruence

26
Q

“Screw home” mechanism

A
  • Contributes to tibiofemoral joint stability in extension
  • Close packed position
27
Q

Static: Menisci

A
  • Withstand load bearing forces
  • Assist in movement of femoral condyles
  • Assist in stabilising translatory movements
  • Increase contact area at the tibiofemoral joint → reduces stress at the joint surfaces
28
Q

Iliotibial band

A

Affords some lateral joint stability particularly in flexion

Assists ACL in preventing anterior slide of tibia on femur

29
Q

Quadriceps femoris

A

Stabilises the patella within trochlear groove

30
Q

Superior tibiofibular joint

A

Allows for gliding in all major planes

31
Q

Tibionavicular
Tibiocalcaneal

A

together prevent abduction at ankle

32
Q

Anterior tibiotalar

A

limit plantarflexion

33
Q

Posterior tibiotalar

A

limit dorsiflexion

34
Q

Anterior talofibular

A
  • Limits plantarflexion
  • Prevents posterior slide of fibula and tibia on talus
35
Q

Posterior talofibular

A
  • Limits dorsiflexion
  • Prevents anterior slide of tibia and fibula on talus
36
Q

Calcaneofibular

A
  • Limits dorsiflexion
  • Prevents adduction at ankle
37
Q

Tarsometatarsal joint ligaments

A

Limit flexion and extension

Stabilise the tarsometatarsal joint complex

38
Q

Collateral ligaments

A
  • Limits: flexion
  • Prevents: adduction and abduction in flexion
39
Q

Plantar ligaments

A
  • Forms part of the articular surface
  • Limits: extension
40
Q

Deep transverse metatarsal ligaments

A
  • Keeps the metatarsal heads together
  • Important in weight bearing
41
Q

Interphalangeal joints - ligaments

A
  • Collateral ligaments: limit flexion
  • Plantar ligaments: limit extension