Pelvis Flashcards
3 Joints of the pelvis
- L and R SI Joint
- Pubic Symphysis
SI Joint Positions
- Resting: neutral b/w flexion and extension
- Closed Pack: Nutation
- Capsular: pain when joints are stressed (compression/gap test)
2 SI Joints Posteriorly
- Synovial articulations with irregular surfaces
- Strong ligamentous support and strong support from bony contour
- Movement? –just a little bit and can have an effect on pain/stretch of ligaments
- -Nutation [forward movement of base] and Counternutation [backward movement of base], shearing
Pubic Symphysis
- Cartilaginous joint united by a interpubic fibrocartialge disc
- Rotation and translation
- Vertical displacement
- -.08 mm in males
- -1.6 mm in females– More in female than in males [pregnancy]
- Rotation:2 deg for males and females
- AP Translation: 0.5-0.7 mm
Hip Joint
- type: Multiaxial ball-and-socket joint which is significantly deeper compared to GH joint
- Acetabular labrum increases articular surface area and creates a seal for the central compartment
- -Resists distraction by maintaining a negative pressure
- -Tear labrum = removes seal
Hip Positions
- Resting: best time to do joint play–30 dg flexion, 30 dg ABD, and slight lateral rotation
- Closed: Full extension, medial rotation, and abduction
- -For sacral intervention: place in this position to prevent damage to this joint
- Capsular Pattern: Flexion, abduction, medial rotation [IR] – order may vary
Iliac Crest
- most superior aspect of pelvis
- Lay hands flat along the most superior aspect to check for symmetry
Iliac Tubercle
- 3 in from top of crest
- Widest point of the crest
ASIS
- Move anterior until you feel the bump
- Drop off and hook under and check for symmtry
- Sartorius and TFL orginates here
AIIS
- inferior and slightly medial to ASIS
- Rectus femoris originates here
- ask pt to initiate hip flexion with knee extension
Pubic Tubercle
- superior bony aspect of the pubic symphysis
- 2 approaches:
- -Start with palmar contact, fingers towards belly button and slide down until it bumps against the tubercles and replace your palm with index fingers
- -Have patient find and then replace with your fingers
- -Check for symmetry**
Pubic Rami
-Laterally from tubercle
PSIS
- directl under the dimple of the spine just above the butt
- check for symmetry and movement–bending forward
SI Joint Palpation
- medial to PSIS
- Common location of pain for pts with SI joint dysfunction
Spinous Process of S2
-medial and inferior to PSIS
Sacral Sulcus
- Dip b/w the S2 spinous process and the PSIS
- check the dept comparing sides
- -sacral torsion-> rotates to opposite side
Inferior Lateral Angle (ILA)
- Angle formed at the inferior apex of the sacrum proximal and lateral to the coccyx
- mobilization contact for the SI joint
- can help find sacral torsion
Ischial Tuberosity
- level of gluteal fold
- palm up, move up until ischial tuberosity rests between the thenar/hypothenar eminences –FINGERS EXTENDED
- pain here could be ischial bursitis or HS strain
- origination of HS (tendinitis)
Greater Trochenter
- Most prominent lateral aspect of the femur
- Common source of pain due to trochanteric bursa
- -Just posterior to the most lateral aspect
-Used as landmark to clinically check for hip anteversion or retroversion
Lesser Trochanter
- Located in proximal medial thigh, difficult to palpate
- with pt relxed and supported hip flexion/ER, press down on femur
- Origin of Ilipsoas
Posterior and Anterior Tilt
Posterior Tilt – ASIS higher
Anterior Tilt – ASIS lower
Iliopsoas and Pectineus
- Deep! Don’t forget to breathe!
- Patient hooklying or in supported 90/90 position.
Psoas only
- 2 inches lateral and then to inches inferior to umbilicus
- -Lateral to rectus
- Must go deep (breathe), ask patient to initiate hip flexion to feel it contract
Iliacus only
- Palpate medial to ASIS and deep
- As patient breathes out attempt to go deeper and press in and laterally
- Ask patient to attempt to flex hip to feel contract
- “Paddy touch” bc tips will be too hard for pts
Semimembranosus
- O –> I: Ischial tuberosity to medial tibial condyle
- Nerve: Sciatic nerve (tibial divison) L5-S2
Semitendinosus
- O–> I: Ischial tuberosity to medial tibia via tendon of pes anserinus
- Nerve: Sciatic nerve (tibial division) L5-S2