week 6 - The Hip Flashcards
What are the joints at the hip?
Acetabulofemoral Joint (Hip) - Ball and socket
Sacroiliac joint - Gliding joint
Pubic Symphysis - Slightly moveable
What bones make up the pelvic girdle and hip?
Ilium
Ischium
Pubis
What are the primary hip flexors/extensors?
Flexors: Iliopsoas, rectus femoris, sartorius, tensor fascia latae.
Extensors: Gluteus maximus, hamstrings
What are the origins and insertions of the Hip flexors?
Iliacus O: Illiac fossa
Psoas O: T12-L5 and sacrum
both have same I: Lesser trochanter
Rec Femoris O: AIIS (Anterior inferior Iliac spine)
Rec Femoris I: Tibial tuberosity
Sartorius O: ASIS (Anterior superior Iliac spine)
Sartorius I: Anteromedial Tibia
Tensor Fascia Latae O: ASIS
Tensor Fascia Latae I: Iliotibial band –> lateral tibial condyle
Pectineus O: Pubis
Pectineus I: Medial Femur
What are the origins and insertions of the Hip Extensors?
Gluteus Maximus O: Posterior one-fourth of the crest of ilum, posterior surface of the sacrum and coccyx near the ilium, and fascia of the lumbar area
I: Oblique ridge on lateral surface of the greater trochanter and iliotibial band of fascia latae.
What actions can be performed at the hip?
Abduction/adduction - Frontal plane, sagittal axis.
Rotation: Transverse plane, Longitudinal Axis.
What are the Hip Adductors?
Adductor Longus O: Pubis I: Linea Aspera
Adductor Brevis O: Pubis I: Linea Aspera
Adductor Magnus O: Pubis and Ischial Tuberosity I: Linea Aspera and medial condyle of femur.
Pectineus O: Anterior Pubis I: Inferior to lesser trochanter
Gracilis O: Pubis I: Anteromedial tibia
What are the Hip Abductors
Gluteus Medius O: Lateral ilium below crest I: Greater trochanter
Gluteus Minimus O: Lateral ilium below GM I: Greater trochanter.
What are the Hip Rotators
Ext Rotation: Primarily by 6 deep ext rotators of hip, considered as one muscle. And gluteus Maximus.
Int Rotation: No real primary muscle - many contribute. Glut min, glut med, TFL, ST, SM, Gracilis
what is femoroacetabular impingement?
Abnormal growth/deformity of femur or acetabulum.
Causes butting together at end of range
Can damage the cartilage of acetabulofemoral joint.
Risk factor for hip osteoarthritis
Higher risk in young people and athetlic groups
What is Iliotibial band syndrome?
Iliotibial band fibrous reinforcement of the TFL.
If tight: Inflammation on the lateral aspect of the knee. Friction between iliotibial band and the lateral condyle of the femur.
what is hamstring strain
Most commn injury in football - 5 injuries per professional club per season.
91% non contact, most often during running.
Biceps femoris most commonly injured.
Risk factors: - previous hamstring strain
Fatigue
Strength imbalance
poor flexibility.
