Ch. 9 The Hip Joint and Pelvic Girdle - Pt. 1
Name the 3 Pelvic bones
1. ilium 2. ischium 3. pubis
Bones: Insertion for all 4 quadriceps muscles
Patella
Pelvic Bone: - Upper two fifths
ilium
T or F? The structural instability of the acetabular femoral (i.e. Hip) joint makes this joint highly susceptible to subluxations and dislocations
False
T or F? Pelvic rotation does not increase the length of stride in running
False (it does increase the length of stride in running)
Which of the following is not an action of the pectineus muscle?
Abduction of the hip
What is the most mobile joint of the body?
Acetabulofemoral joint
Agonist muscles during hip flexion include all of the following except:
Adductor Magnus (include: Rectus femoris, Psoas Major, Pectineus)
Movements: -accomplished by hip flexion/lumbar extension
Anterior pelvic rotation
Movements: Anterior movement of upper pelvis; iliac crest tilts forward in a sagittal plane; anterior tilt; downward rotation
Anterior pelvic rotation
T or F? The ischiofemoral ligament is responsible to limit external rotation of the hip
False
Bones: Ball and socket joint
Head of femur connecting with acetabulum of pelvic girdle
Movements: Movement of femur laterally to side away from midline
Hip abduction
Movements: Movement of femur medially toward midline
Hip adduction
Movements: Movement of femur in a diagonal plane away from midline of body
Hip diagonal abduction
Movements: Movement of femur in a diagonal plane toward midline of body
Hip diagonal adduction
Movements: Movement of the femur straight posteriorly away from the pelvis
Hip extension
Movements: Rotary movement of femur laterall around its longitudinal axis away from midline
Hip external rotation
Movements: Movement of femur straight anteriorly toward pelvis
Hip flexion
Movements: movements of femur in a horizontal or transverse plane away from pelvis
Hip horizontal abduction
Movements: Movement of femur in a horizontal or transverse plane toward pelvis
Hip horizontal adduction
Movements: Rotary movements of femure mediall around its longitudinal axis toward midline
Hip internal rotation
Bones: Origin for hip abductors
Lateral Pelvis
Movements: accomplished by hip abduction, hip adduction, and or lumbar lateral flexion
Lateral pelvic rotation
Movements: In frontal plane left pelvis moves inferiorly in relation to right pelvis
Left lateral pelvic rotation
Movements: In horizontal plane pelvis rotates to body's left
Left transverse pelvic rotation
Bones: Origin for hip adductors
Medially
Movements: accomplished by hip extension /lumbar flexion
Posterior Pelvic Rotation
Movements: Posterior movement of upper pelvis; iliac crest tilts backward in a sagittal plane; posterior tilt; upward rotation
Posterior pelvic rotation
Bones: Origin for hip extensors
Posteriorly/Posteroinferiorly
Bones: Insertion for short muscles of hip
Proximal thigh
Joints: Anteriorly: - Two pelvic bones join to form ?
Pubic symphysis
Which of the following is NOT one of the 6 deep external hip rotators?
Rectus femoris
Hip Joint
Relatively stable due to: - Bony architecture - Strong ligaments - Large supportive muscles
Movements: In frontal plane right pelvis moves inferiorly in relation to left pelvis
Right lateral pelvic rotation
Movements: In horizontal plane pelvis rotates to body's right
Right transverse pelvic rotation
Joints: Posteriorly: - Sacrum is between the 2 pelvic bones and forms ?
Sacroiliac joints
Bones: extension of spinal column with 5 fused vertebrae
Sacrum
Movements: - Anterior & posterior pelvic rotation
Sagittal plane
T or F? The pubofemoral ligament is located anteromedially and inferiorly and limits excessive extension and abduction
True
T or F? The two pelvic bones join to form the amphiarthrodial joint referred to as the pubic symphysis pubis
True
Pelvic Bone: - Posterior & lower two fifths
ischium
The gluteus maximus muscle is located ____ and performs ____ of the hip joint
posteriorly; extension
Bones: - Origin for hip flexors
Anterior pelvis
What is the longest bone in the body?
- Femur
All pelvic girdle rotation results from motion at one or more locations
- Right hip - Left hip - Lumbar spine
T or F? The Pelvic girdle moves back and forth within 3 planes for a total of 6 different movements
True
T or F? Gluteus medius can perform both internal and external hip rotation due to different lines of pull of its anterior and posterior fibers
True
T or F? The femoral nerve innervates, in addition to many other muscels, pectineus and sartorius
True
T or F? Body movements usually involve entire pelvic girdle and hip joints?
True
Pelvic Bone: Anterior & lower one fifth
pubis