Innominates Flashcards
(30 cards)
What are the three bones of the pelvis?
Pubis
Ilium
Ischium
What is the origin and instertion of the Inguinal Ligament?
ASIS –> Pubic Tubercle
What is the origin and insertion of the Sacrospinous Ligament?
Anterior, lateral surface of the sacrum –> Spine of the Ischium
What is the origin and insertion of the Iliolumbar Ligament?
5th Lumbar Vertebrae –> Ilium
What is the Origin and Insertion of the Anterior Sacroiliac Ligament?
Anterior, lateral surface of the Sacrum –> Ilium
Covers the anterior side of the Sacro-Iliac Joint
What is the Origin and Insertion of the Sacrotuberous Ligament?
Anterior, lateral surface of the Sacrum –> Ischial Tuberosity
What is the Origin and Insertion of the Posterior Sacroiliac Ligament?
Posterior, lateral surface of sacrum –> Ilum
Covers the posterior side of the Sacro-iliac Joint
What muscle has part of its origin on the Sacrospinous Ligament?
Coccygeus M.
What structures attach to the Sacrotuberous Ligament?
Gluteus Maximus M.
Tendon of the Biceps Femoris M.
Pelvic Fascia
Where would you find the Interosseous Sacroiliac ligament?
Interosseous means between bones.
Interosseous Sacroiliac Ligament is between the ilium and the sacrum and attaches posterosuperiorly to the joint
It is covered by the Posterior Sacroiliac Ligament
How do the inominates move during the gate cycle?
When you extend your leading leg ahead of you for a heel strike, the ASIS of the same leg POSTERIORLY ROTATES
The opposite leg as it is extended behind you while taking the stride, will exhibit an ANTERIOR ROTATION of the ASIS
What muscles are used to flex the thigh?
- Psoas M.
- Iliacus M.
- Rectus Femoris M.
- Sartorius M.
What muscles are used to extend the thigh?
- Gluteus Maximus M.
Ham Strings:
- Biceps Femoris M.
- Semimembranosis M.
- Semitendonosis M.
What muscles are used to ABduct the thigh?
- Gluteus Medius M.
- Gluteus Minimus M.
- Tensor Fascia Lata M.
What muscles are used to ADduct the thigh?
- Aductor Longus M.
- Aductor Magnus M.
- Aductor Brevis M.
- Gracilis M.
- Pectineus M.
What does a Positive Trendelenburg Sign on the Left indicate?
It means the LEFT HIP is DROPPING
which indicates that the RIGHT GLUTEUS MEDIUS M. is WEAK
What muscles are used for External Rotation of the Leg?
- Piriformis M.
- Obturator Internus M.
- Obturator Externus M.
- Superior Gemelis M.
- Inferior Gemelis M.
- Quadratus Femoris M.
What are some important things to note about the Piriformis M.?
It is the only Hip Rotator Muscle that attaches directly tot he Sacrum
Abnormal contraction of this muscle can lead to Sciatica (lower back, hip pain due to issues with sciatic nerve)
The action of the Piriformis M. changes depending on the position of the thigh
- Flexed thigh: Piriformis acts as an ABductor
- Extended thigh: Pirifomis acts as an external rotator
What associated issues can arrise from a Dysfunction of the Quadratus Lumborum M.?
Dysfunction of the Quadratus Lumborum can lead to symptoms similar to groin pull or hernia by irritating the Iliohypogastric and Ilioinguinal nerves (L1) as they pass anterior to the muscle
What ligament separates the Greater Sciatic Foramen and Lesser Sciatic Foramen?
The Sacrospinous Ligament, which connects the sacrum and spine of the ischium
What are the landmarks along the gravitational line?
- Auditory Meatus
- Acromian Process
- Greater Trochanter
- Body of L3
- Anterior 1/3 of sacrum
- Lateral Condyle of the knee
- Laterl Malleolus
When assessing Ichial Tuberocity’s, what somatic dysfunction are checking for?
Small Hemipelvis - One side of the pelvis is congenitally smaller than the other
What are the signs you look for if a patient has Anterior Innominate Rotation?
- ASIS - Inferior
- PSIS - Superior
- Medial Malleolus - Inferior (long)
- Iliac crest is level (no change in height
What are the signs you look for in a patient has Posterior Innominate Rotation?
- ASIS - Superior
- PSIS - Inferior
- Iliac Crest - level (no change in height)
- Medial Malleolus - superior (short)
