GAIT-- Hip Flashcards

1
Q

In Stance phase:

IC

where is hip?

A

Neutral

*neither ABD nor ADD

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2
Q

In stance phase:

LR–> MSt

where is hip?

A
  • Stance limb will norm ADD to 5deg
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3
Q

LR–> MSt and the Hip:

Explain glute med. weakness

If glute med. isnt strong enough to eccentrically control ADD =====

A
  • EXCESSIVE hip ADD. will occur t/o MSt if glute med is weak
    • contralat pelvis on contralateral side will DROP more than it should
      • ​Trendelenberg Gait
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4
Q

In Stance Phase:

MSt–> Toe off

where is hip?

A
  • Hip will gradually ABD to 10deg
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5
Q

During Swing:

what is going on w/ Hip?

A

Hip ADD’s BACK to Neutral in prep for next IC

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6
Q

Sag. Plane HIP

IC

A

Hip == 30deg FLEX

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7
Q

Sag. plane Hip

LR–TSt

A
  • Hip normally extends to 10-20deg
    • Lack of Hip Ext during Stance
      • limit HOW FAR Opp. (Swing) limb can advance
    • Tight Hip Flexors
      • actively limit Hip EXT
        • esp. as tibia progresses forward over fixed foot
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8
Q

Sag Plane HIP

REC FEM

*hip flexor/knee extensor 2 joint mm

A
  • Stretched when hip is EXT and knee is still slightly FLEXED
    • If Tight:
      • prevents hip from EXT as you approach MST
    • TESTS:
      • Thomas== hip flexors
      • Mod’d Thomas==Rec Fem
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9
Q

Hip MM activation t/o Gait

IC–> LR

A
  • Hip EXT
  • Glute Med
    • act. INCs t/o LR
      • ​eccentrically controls Stance limb ADD
      • WEAK GLUTES==
        • Weak Ecc. ADD==
          • ​contralat. pelvis drop
  • TFL active during LR
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10
Q

Hip MM activation t/o Gait

MSt

A
  • Glute Med
    • Conc ABD’s hip to assist w/ swing of opp. leg
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11
Q

Hip MM activation t/o Gait

TSt–> MSw

A

Adductors

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12
Q

Hip MM activation t/o Gait

PSw–> early MSw

A

Hip flexors concentrically

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13
Q

Hip MM activation t/o Gait

@ LR and moving to MSt

A
  • BW vector just ANT to hip===FLEXION moment
    • ​here we use the glute max (int. moment hip ext)
      • prevents hips collapsing into FLEX
  • Compensation for weak Glute Max
    • Lurch== lean back so BW vector falls POST to hip joint
      • causes Hip EXT moment instead of normal FLEX moment
    • Glute max lurch==weak glute max
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14
Q

Glute med activation causes what?

A

Compression forces (JRF’s) @ hip

  • To LESSEN need for Glute Med during STANCE
    • or lessen JRF
      • pt will lean TOWARD Stance limb
    • or to DEC pain
      • this lessens the ADD moment so ABDs dont have to work as hard
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15
Q

Lessening need for Glute Med eventually leads to….

A

pattern contributes to disuse weakness of Glute Med

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16
Q

@ LR—- glute med activity

A
  • Glute med activity INCs to ecc. control Stance limb ADD
  • ECC. contraction is MOST POWERFUL glute med contraction that causes MOST compressive forces @ hip
    • if pt already leaning over Stance limb===> little need for any conc. act in MSt
17
Q
A