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SK lecture 5- Hip and Pelvis

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winniesmith2's version from 2018-03-27 18:09

Section 1

Question Answer
What makes up the pelvic girdle two hipbones, sacrum and coocyx. Articulate at the pubic symphysis and sacroiliac joints
What makes up the hip boneilium (superior), Ischium (posterior) and pubis (anterior). The acetabulum is where the head of the femur fits.
What is femoroacetabular impingement (FAI)Deformity of the femoral head or acetabulum (excessive bone growth) that causes the femur to butt against the acetabulum at the end of the range of movement.. Can damage the cartilage of the femoral head or acetabulum (& other joint structures) Deformity of the femoral head or acetabulum (excessive bone growth) that causes the femur to butt against the acetabulum at the end of the range of movement. Higher risk in young people and athletic groups.
What movements can the hip do Hyperextension, extension and flexion. Adduction and Abduction. Circumduction. External and internal rotation.
What is ilio-tibial band syndromeAs the knee flexes & extends, the ilio-tibial band moves above and below the lateral condyle of the femur. If the ilio-tibial band is tight …..
Hamstrings strain facts The most common injury in football (5 injuries per professional club per season (Woods et al., 2004)) ♦ 91% are non-contact, most often during running
What is the muscle most often strained in a hamstring strain Biceps femoris
What are the risk factors for hamstring strains Previous hamstrings strain injury, Fatigue, Strength imbalance, Poor flexibility
What is lombard's paradox (part A)Lombard’s Paradox describes the co-contraction of an antagonistic muscle pair that does produce movement. During the sit-to-stand motion: All parts of the quadriceps & hamstrings are active. Yet they are antagonistic, and oppose each other at both the hip and knee! From observing the movement, clearly there is:  Net extensor torque at the knee & Net extensor torque at the hip
What is lombard's paradox (part B)-The extensor muscles (at the knee & hip) have a greater lever arm than the flexors. - The Quadriceps is larger muscle & activated to a greater degree than the hamstrings. - Only part of quadriceps spans the hip joint (RF) vs almost all the hamstrings (ST, SM, BFlh).
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Section 2

Question Answer
What are the hip flexors Ilio-psoas, rectus femoris, tensor fasciae latae, sartorius, ilio-tibial band
Psoas majorO- Bodies and transverse processes of lumbar vertebrae. I- lesser trochanter
Iliacus O- iliac fossa. I- Lesser trochanter.
Rectus femoris O- Anterior inferior iliac spine (AIIS). I- Tibial tuberosity (via the patella and patellar ligament)
tensor fasciae lataeO- Iliac crest, posterior to the ASIS. I - Iliotibial tract
sartorius O- anterior superior iliac spine (ASIS). I- Proximal, medial shaft of the tibia at pes anserinus tendon.
ilio-tibial band -
Psoas minorO- Body and transverse process of first lumbar vertebra. I- superior ramus of pubis.
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Section 3

Question Answer
What are the hip extensors Gluteus maximus, ilio-tibial band, biceps femoris (long & short head), semi tendinosus, semi membranosus
Gluteus maximus O- coccyx, edge of sacrum, posterior iliac crest, sacrotuberous and sacroiliac ligaments. I- iliotibial tract (upper fibers) and gluteal tuberosity (lower fibers).
Ilio-tibial band -
Biceps femoris O- long head = ischial tuberosity. Short head = lateral lip of linea aspera. I- Head of the fibula.
semi tendinosusO-Ischial tuberosity. I- Proximal, medial shaft of the tibia at pes anserinus tendon.
semi membranosus O-Ischial tuberosity. I-Posterior aspect of medial condyle of tibia.
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Section 4

Question Answer
What are the hip adductors Adductor brevis, adductor longus, adductor magnus, pectineus and gracilis
Adductor brevisO- Inferior ramus of pubis. I- Pectineal line and medial lip of linea aspera.
Adductor longusO- pubic tubercle. I- Medial lip of linea aspera.
Adductor magnusO- Inferior ramus of pubis, ramus of ischium and ischial tuberosity. I- Medial lip of linea aspera and adductor tubercle.
PectineusO- superior ramus of pubis. I- pectineal line of femur.
GracilisO- Inferior ramus of pubis. I- Proximal, medial shaft of tibia at pes anserinus tendon.
What are the hip abductorsGluteus medius, gluteus minimus
Gluteus mediusO- gluteal surface of the ilium, between posterior and anterior gluteal lines, just below the iliac crest. I- lateral aspect of greater trochanter.
Gluteus minimusO- gluteal surface of the ilium between the anterior and inferior gluteal lines. I- Anterior aspect of greater trochanter.
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Section 5

Question Answer
What are the external rotators of the hip Piriformis, superior gemellus, inferior gemellus, quadratus femoris and Obturator internus.
PiriformisO- anterior surface of sacrum. I- superior aspect of greater trochanter.
Superior gemellusO- ischial spine. I- Medial surface of greater trochanter.
Inferior gemellusO- ischial tuberosity. I- medial surface of greater trochanter.
Quadratus femorisO- lateral border of ischial tuberosity. I- Intertrocanteric crest, between the greater and lesser trochanters.
Obturator internusO- Obturator membrane and inferior surface of obturator foramen. I- Medial surface of greater trochanter.
What are the internal rotators No muscles are primarily internal rotators. Muscles that can contribute to Internal Rotation are: Gracilis, Medial hamstrings (ST & SM) Tensor fasciae latae Gluteus medius & minimus
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