Exam 4 Flashcards
hip bone
• Acetabulum – cup shaped depression articulates with head of femur
o Acetabular fossa - nonarticular fossa
o Lunate surface- peripheral acetabulum is articular portion
o Acetabular notch
ilium
• Two portions:
1. Wing (Ala)
External Surface (Dorsum Ilii)
1. Posterior gluteal line
o Shortest
o Gluteus maximus origin posterior to posterior gluteal
2. Anterior gluteal line
o Longest
o Gluteus medius origin between 1 & 2
3. Inferior gluteal line
o Least distinct
o Gluteus minimus origin between 2 & 3
**Rectus Femoris origin btwn inferior gluteal line & margin actebulum
Internal Surface
ilium cont
• Superior- Iliac Crest o Anterior- Anterior superior iliac spine (ASIS) o Posterior- Posterior superior iliac spine (PSIS) o External Lip Fascia Lata Tensor fascia latae o Internal Lip Iliac fascia Iliacus • Inferior-Arcuate Line • Anterior Border o Anterior superior iliac spine (ASIS) Sartroius Iliacus Tensor fasciae latae m Inguinal ligament o Anterior INFERIOR iliac spine Iliofemoral ligament Straight head rectus femoris Porstion iliacus m o Notch between two spines o Groove medial to AIIS for psoas major/iliacus
ilium 3
o Iliopectineal eminence Site of fusion btwn pubis/ilium medial to groove for iliopsoas • Posterior Border o Posterior Superior iliac spine (PSIS) Sacroiliac ligament o Posterior Inferior iliac spine • Iliac Fossa- concave area Nutrient foramen in its center Iliacus m • Sacroiliac joint Posterior to iliac fossa Articulation between sacrum and ilium • Iliac tuberosity- attachment sacroiliac ligaments Poateior to articular area 2. Body External Surface -forms portion acetabulum Internal Surface -part wall bony pelvis -Obterator internus takes origin • No ramus • Body joins lateral projection of superior ramus of pubis @ acetabulum • Body/Wing Separated externally margin acetabulum Internally arcuate line • Greater Sciatic Notch o Both ischium and ilium o Proximally- Inferior to PIIS o Distally- ends ischial spine
ischium
• Single ramus • Body joins lateral projection of superior ramus of pubis @ acetabulum • Strongest/most inferior hip bone • Body o External Surface Forms part of acetabular fossa Part of lunate surface Ischial Spine • separates greater/lesser sciatic notches • Attachments: o Sacrospinalis ligament o Superior gemellus muscle
ischium 2
Ischial tuberosity
• Other attachments:
o Quadratus femoris- lateral tuberosity tear-dropped facet
o Inferior gemellus- superomedial tuberosity
• Quadrilateral Portion: upper part
o Oblique line – separates hamstring origins
Semimebranosus- upper lateral
Long head biceps femoris & semitendinosus–below
• Triangular Portion: lower region
o Adductor Magnus
o Sacrotuberous ligament
o Internal Surface
Obterator Internus attaches
ischium 3
• Ischial Ramus o Directed anteriorly from ischial tuberosity o Joins inferior pubic ramus o External Surface Adductor magnus Obturator externus o Internal Surface Obturator internus o Lateral border sharp/thin Forms margin obturator foramen o Medial border Perineum attachments
pubis
• Body o Gracilis o Adductor Longus o Adductor Brevis • Superior Rami o Medial to LAteral Portion Pubic crest – most medial Pubic tubercle- lateral to pubic crest, inguinal ligament attachment o Lateral Portion Pectin Pubis – laeral to pubic tubercle • Pectineus attaches Iliopectineal line- lateral extension pubic crest
pubis cont
• Inferior rami o fused to ischial ramus > ischiopubic ramus o Directed posterolateral from pubic symphysis o Adductor compartment attachments: Gracilis Adductor brevis Adductor magnus Obturator externus
sacrum
• Five fused sacral vertebrae
• Base: superior, articulates 5th lumbar vertebra
o ALAE – large triangle areas
Lateral
Support Psoas major & lumbosacral trunks
Anterior ¾ each ala = Costal process
Posterior ¼ each= Transverse process
• Apex: inferior end, articulates w/ coccyx
• Vertebral canal: dorsal, ventral rootlest of spinal nerves
sacrum 2
• Surfaces o Anterior “pelvic surface” Iliacus origin- superolateral Piriformis orgin – segments 1-4 o Posterior Convex Narrower Middle Sacral Crest- midline longitudinal ridge • Rudimentary spinous processes of sacral vertebrae Sacral grooves • Laminae of vertebrae • Between middle sacral crest & articular crest… longitudinal ridge of articular processes Posterior Sacral Foramina • Lateral to articular crests o Lateral x2 Broad superior, thin inferior
sacrum 3
Auricular surface
• covered hyaline cartilage
• articulates with ilium at sacroiliac joint
Sacral Tuberosity
• Posterior to auricular suface
• 3 depressions for dorsal sacroiliac ligament
Thin Inferior
o Gluteus Maximus
o Sacrospinous
o Sacrotuberous
• Ossifcation
o Primary center & 2 epiphyseal plates: body each sacral vertebra
o 2 ossifcation centers: each vertebral arch
o 2 epiphyseal plates: each lateral seface
o 1 ossifcation center: lateral portion each upper 3 vertebrae
coccyx
• 4 verebrae (can range 3-5) • No laminae, pedicles, spinous processes • Lateral Processes o Sacrotuberous lig o sacrospinous lig o Gluteus Maximus • Anterior surface- concave o Sacrococcygela ligament attached • Posterior Surface o Cocygeal Cornua- large pair of superior articular processes • Ossifcation: o 1st 1-4y o 2nd 5-10y o 3rd 10-15y o 4th 15-20y
hip joint
• Ball/Socket • Acetabulum o Articular/nonarticular regions o 1/5 pubis- medial o 2/5 ischium – lateral o Ilium- superior • Acetabular Fossa o Deepest, nonarticulating o Primarily ischium • Lunate Surface o Aricualr surface o Cartilage covered o Acetabular labrum¬- attaches to lateral margin & synovial membrane deepens acetabulum Fibrocartilagnious ring o Acetabular Notch- lunate incomplete inferiorly Cont w/ fossa Transverse acetabular ligament –bridges notch • Foramen for blood vessels to supply joint • Head of Femur o Direction superior/medial o Surface covered articular cartilage – thicker above supporting weight Exception: rough depression center = fovia captiis femoris • Ligament capitus femoris attaches
hip joint 2
• Ligaments:
1. Articular Capsule
• Strong, loose around joint
• Attach: margins acetabulum few mm from labrum
o Lateralarlly to medial side of greater trochanter
o Anteriorly intertrochanteric line
o Posterirly 1 cm above intertrochanteric crest
o Fibers over neck of femur > acetabular rim
• Inferioly- blends transvers acetabular ligament
• THICK anterior/superior for greater R area
• Thin posterior/inferior
• Distally become zona orbicularis
• Proximally become iliofemorla, pubofemoral, ischiofemoral
2. Acetabular Labrum
• Triangular
• Fibrocartilaginous
• Deepens cavity
• Blends transverse acetabular at acetabular notch
• Helps hold head femur in acetabulum
hip joint 3
- Transverse Acetabular
- Zona Orbicularis
• DISTAL part of articular capsule become this
• Around neck fo femur - Iliofemoral
• longest, widest, strongest
• inverted Y
o stem: ilium immed below AIIS
o Base 1: anterior part greater trochanter
Often called Iliotrochanteric ligament
o Base 2: intertrochanteric line
• Anterior joint
• Transversed by: articular branch deep branch medial femoral circumflex - Pubofemoral
• Not well developed
• Anterior to iliofemoral
• Origin:
o obturator crest
o superior ramus of pubis (anterior iliopectineal eminence)
• direction inferiorlateral
• Attach: Neck of femur
• Blend w/ iliofemoral
hip joint 4
- Ischiofemoral
• Triangular
• Posterior capsule
• Origin:
o Posterior body ischium
o Inferior acetabulum
• Dreiction superior lateral in spiral course
• Attach:
o Posterosuperior part neck fo femur below greater trochanter
• Below this ligament the capsule of hip is thin - Ligament capitus femoris
• 4 cm long
• Btwn head femur & acetabulum
• Intracapsular
• Enclosed by tub- like extension of synovial membrane
• Proximal (3 bands)
o 2 lateral bands: fixed to margins acetabular notch
o Medial band blends transverse acetabular ligament
• Distal:
o Fovea capitus on femur
hip joint 4
• Synovial Membrane- inner surface of articular capsule
o Acetabulum corsses over transverse acetabular ligament to acetabular fossa
o Tubal reflexion around ligamentum capitus femoris
• Nerve to hip joint: o Femoral o Obturator o Accessory obturator o Inferior gluteal nerves • Blood vessels to hip joint: o Medial/lateral femoral circumflex o Superior/inferior gluteal o Obterator o 1st perforating **HEAVY LIGAMENTS AVASCULAR
sacroiliac joint
• Synovial joint • Auricular sacrum & ilium at 1st 3 sacral vertebrae • Lined by cartilage • Narrow joint cavity surrounded by articular capsule • Ligaments 1. Anterior Sacroiliac • Ventrolateral surface sacrum to margins of auricular suface of ilium 2. Posterior Sacroiliac • Strong • 2 sets fibers: o Deep/Short Fibers Origin: tuberosity of ilium & PIIS Passes inferomedially Attach: posterolateral sacrum o Superical/Long Fibers Oblique Origin: PSIS Attach: 3rd tubercle of sacrum Blends sacrotuberous ligament 3. Interosseous • Strong fibers unite 2 articular bones • Blend posterior sacroiliac lig • Suspend sacrum between 2 iliac bones
psoas major m
Origin:
• transverse process lumbar vertebrae
• intervertebral discs last thoracic/all lumbar vertebrae
• tendinous arches (allow passage lumbar A/V
**Deep to inguinal ligament
Insertion:
• lesser trochanter femuer medial to iliacus
• bursa spearats tendon from pubis & hip joint capsule
Nerve: L2/L3
Function: Flex hip & lumbar spine