GAIT-- Hip Flashcards
In Stance phase:
IC
where is hip?
Neutral
*neither ABD nor ADD
In stance phase:
LR–> MSt
where is hip?
- Stance limb will norm ADD to 5deg
LR–> MSt and the Hip:
Explain glute med. weakness
If glute med. isnt strong enough to eccentrically control ADD =====
- 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
-
contralat pelvis on contralateral side will DROP more than it should
In Stance Phase:
MSt–> Toe off
where is hip?
- Hip will gradually ABD to 10deg
During Swing:
what is going on w/ Hip?
Hip ADD’s BACK to Neutral in prep for next IC
Sag. Plane HIP
IC
Hip == 30deg FLEX
Sag. plane Hip
LR–TSt
- 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
-
actively limit Hip EXT
-
Lack of Hip Ext during Stance
Sag Plane HIP
REC FEM
*hip flexor/knee extensor 2 joint mm
- 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
-
If Tight:
Hip MM activation t/o Gait
IC–> LR
- Hip EXT
- Glute Med
- act. INCs t/o LR
- eccentrically controls Stance limb ADD
-
WEAK GLUTES==
-
Weak Ecc. ADD==
- contralat. pelvis drop
-
Weak Ecc. ADD==
- act. INCs t/o LR
- TFL active during LR
Hip MM activation t/o Gait
MSt
- Glute Med
- Conc ABD’s hip to assist w/ swing of opp. leg
Hip MM activation t/o Gait
TSt–> MSw
Adductors
Hip MM activation t/o Gait
PSw–> early MSw
Hip flexors concentrically
Hip MM activation t/o Gait
@ LR and moving to MSt
- BW vector just ANT to hip===FLEXION moment
- here we use the glute max (int. moment hip ext)
- prevents hips collapsing into FLEX
- here we use the glute max (int. moment hip ext)
-
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
-
Lurch== lean back so BW vector falls POST to hip joint
Glute med activation causes what?
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
-
or lessen JRF
Lessening need for Glute Med eventually leads to….
pattern contributes to disuse weakness of Glute Med