Hip Complex: Oral Flashcards
(28 cards)
Joints
Sacroiliac Joint
Acetabulofemoral Joint
Pubic Symphysis
Osteokinematics & Normal AROM: Hip Flexion
120°
Osteokinematics & Normal AROM: Hip Extension
30°
Osteokinematics & Normal AROM: Hip ABduction
45°
Osteokinematics & Normal AROM: Hip ADDuction
30°
Osteokinematics & Normal AROM: Hip External Rotation
45°
Osteokinematics & Normal AROM: Hip Internal Rotation
45°
Arthrokinematics of the Hip: Sagittal (Flexion/Extension)
Flexion: Primarily Roll (minimal glide)
Extension: Primarily Roll (minimal glide)
Arthrokinematics of the Hip: Horizontal (Internal/External Rot)
Hip ER: Posterior Roll, Anterior glide of Femur
Hip IR: Anterior Roll, Posterior glide of Femur
Arthrokinematics of the Hip: Coronal Plane (Abduction/Adduction)
Hip ABduction: Superior Roll, Inferior Glide
Hip ADduction: Inferior Roll, Superior Glide
Ligaments of the Hip & Joint Function: Illefemoral ligament
Iliofemoral Ligament:
- Anterior & Superior
- STRONG Y Shaped
- Taut With Extension
Ligaments of the Hip & Joint Function: Pubofemoral Ligament
Pubofemoral Ligament
- Anterior & Inferior
Taut w/ extension & ABduction
Ligaments of the Hip & Joint Function: Ischiofemoral Ligament
Ischiofemoral Ligament
Posterior
Weakest of the 3 ligaments
Taut w/ internal rotation & Adduction
Ligaments of the Hip & Joint Function: Inguinal Ligament
Connects from ASIS to the Pubic Tubercle.
Forms boundary of femoral triangle and inguinal canal.
Provides attachment point for external oblique muscles.
Ligaments of the Hip & Joint Function: Long Dorsal Ligament
Connects PSIS to the lateral crest of the sacrum, anchors the sacrum proximally to prevent counternutation
Ligaments of the Hip & Joint Function: Sacrospinous
Attaches the outer edge of the sacrum/coccyx to the spine of the ischium.
Creates the greater and lesser sciatic foramen.
Ligaments of the Hip & Joint Function: Sacrotuberous Ligament
Sacrotuberous Ligament
Acetabular Labrum Function
Fibrocartilaginous rim attached to the margin of the acetabulum
Increases depth & articular surface by 10%
Doesn’t cover 360° of acetabulum due to the ligamentum teres
Transverse acetabular ligament bridges the gap formed
Force Couples at the Pelvis: Anterior Tilt
Erector Spinae: extension of spine, pulls posterior iliac crest superiorly
Iliopsoas: trunk flexion, pulls anterior iliac crest inferiorly
Sartorius: hip flexion, pulls ASIS inferiorly
Force Couples at the Pelvis: Posterior Tilt
Rectus Abdominis: trunk flexion, pulls pubic crest superiorly
Gluteus Maximus: hip extension, pulls ilium inferiorly
Hamstrings: hip extension, pulls ischial tuberosity inferiorly
External Obliques: Trunk flexion, assists rectus abdominus by providing stability and pulling pubic tubercles superiorly
Right Positive Trendelenburg: What muscles may be impacted & how?
Weak (R) gluteus medius is not strong enough to hold the hip in position during single leg WB
Trendelenburg gait can be characterized by a sagging in the pelvis on the unsupported side during the stance phase of gait. In right positive Trendelenburg, the right gluteus medius (and possibly minimus) is affected during right sided single limb stance. This means that the right gluteus medius (and possibly minimus) does not contract properly when the left leg is in swing phase. This lack of contraction causes the left pelvis to sag when unsupported. In order to fix this, abduction exercises on the right side would be necessary to strengthen the gluteus medius (and possibly minimus). Another thing to consider is the over-activation of the quadratus lumborum on the affected side.
Force Couples: Hip Flexion
Iliopsoas
Rectus femoris
Force Couples: Hip extension
Glute max
Hamstrings (semitendi, semimembi, long head of biceps)
Force Couples: Hip Abduction
Glute Medius
Glute Minimus
TFL
