Week 4 Masterclass Flashcards
Normal Hip Flexion ROM
110-120
Normal Hip Extension ROM
10-15
Normal Hip Abduction ROM
30-50
Normal Hip Adduction ROM
30
Normal Hip ER ROM
45
Normal Hip IR ROM
40
Muscles involved in hip flexion
Iliopsoas, Rectus Femoris, Sartorius
Muscles involved in hip extension
Gluteus Maximus, Bicep Femoris
Muscles involved in hip abduction
Gluteus Medius, Gluteus Minimus, TFL
Muscles involved in hip adduction
Adductor Longus, Adductor Brevis, Adductor Magnus, Gracilis
Muscles involved in hip ER
Piriformis, Obturator Internus, Gemelli, Sartorius
Muscles involved in hip IR
TFL, Gluteus Medius, Gluteus Minimus
Functional hip ROM needed to ascend and descend stairs
67 flexion
36 extension.
When running, what “times the body weight” is the force going through the hip joint?
4.5+ xBW
What are the forces exerted on the hip during standing on one limb?
2.4-2.6x BW
What does a positive Trendelenburg’s sign indicate?
Weakness of the gluteus medius muscle on the standing leg, leading to hip drop on the contralateral side.
Iliofemoral ligament function
prevents hyperextension and helps maintain upright posture at the hip
What ligament is regarded as the strongest ligament in the body
Iliofemoral ligament
Hip OA diagnosis
- Anterior and lateral hip pain (c shape)
- Morning stiffness
- Hip IR 24 deg less OR Hip flex 15 deg less than other side
If someone has hip ER = 35 and IR = 55, is it considered normal? Why?
Hip ER is outside normal ROM (40-60), and IR is also outside normal ROM (30-40), but it would still be considered normal as they both add up to 90 deg of hip rotation (35+55=90)
What is inner range
Muscle is shortened. e.g if quad is being tested at inner range, the knee would be placed in ext.
What is outer range
Muscle is lengthened. e.g if quad is being tested at outer range, the knee would be placed in flex.
Examples of PAM
Compression
Distraction
Glides
Why does overstriding cause anterior hip irritation
The femoral head translates anteriorly on the acetabulum/labrum
