Exam 1 Flashcards
iliofemoral ligament
O: AIIS, acetabular rim
I: greater trochanter and intertrochanteric line
-strongest of the hip ligaments
-prevents hyperextension
pubofemoral ligament
O: ant/inf body and superior ramus of the pubis
I: joint capsule and medial part of iliofemoral ligament
-tightens with ext and abd
ischiofemoral ligament
O: ischial portion of acetabular rim
I: medial to greater trochanter
-weakest of the 3 ligaments
Extracapsular ligaments of the knee
- LCL (doesn’t reinforce capsule)
- MCL
- Oblique popliteal lig. (post)
- Arcuate lig. (post)
Intra-articular ligaments of the knee
- ACL
- PCL
- Transverse lig.
- all don’t reinforce capsule
medial meniscus
- c shaped
- attached to 5 sites
lateral meniscus
- o shaped
- 3 attachments
LCL
- unattached to capsule
- attach to lateral epicondyle
- inserts on head of fibula
- cordlike
- resists varus force
MCL
- reinforces joint capsule
- flat, ribbon like
- superficial layer attaches to medial epicondyle
- deep inserts on medial tibial condyle
- have a bursa in between the layers
- resists valgus force
oblique popliteal ligament
- continuation of semimembranosus
- rums lateral to posterior medial of lateral femoral condyle
arcuate ligament
-runs from fibular head to lateral condyle of femur and popliteal lig.
ACL
- medial portion of lateral femoral condyle to medial tibial plateau
- main restraint to anterior tibial translation
- protects against hyperextension
PCL
-posterior/lateral aspect of tibial spine to lateral aspect of medial femoral condyle
transverse ligament:
-connects the menisci to each other along their anterior edges
portions of the cruciate ligaments are ___ in every joint position
taut
order of muscles that originate on the lateral femoral condyle
superior:
- plantaris
- lateral head of gastrocnemius
- popliteus
what joint does not contribute to motion at the knee joint:
superior tibiofibular joint
articularis genu
-helps pull suprapatellar bursa and synovium from joint
prevents entrapment of capsule
main function of fibula
: to be a site of muscle attachment
groove for flexor hallucis longus tendon on :
talus
groove for fibularis longus tendon on:
cuboid
deltoid ligament
Anterior tibiotalar part
Tibionavicular part
Tibiocalcaneal part
Posterior tibiotalar part
Normal angle of inclination of femur:
115-140 degrees
normal hip torsion angle
10-20 degrees
anterior
-retroversion rotated less than 10 deg anterior to frontal plan
-anteversion rotated greater than 20 deg
pectineal line location
posterior femur
Function of Labrum
- increases surface area by 10%
- enlarges acetabulum to 2/3 of a sphere
- covers 1/2 of femoral head
- controls deformation
- joint proprioception
ligament of the head
- lies in a joint cavity
- surrounded by synovial tissue and fluid
- not a primary stabilizer
- conducts artery of the head of the femur
VMO
- oblique fibers that attach to patella
- help stabilize patella and allow it to track normally
- helps counteract the lateral force from rectus femoris
Adductor canal borders
anterior and lateral: vastus medialis
- posteriorly: adductor magnus/longus
- medial: sartorius which forms the roof
what passes through the adductor canal
femoral artery
femoral vein
saphenous nerve
lateral circumflex artery passes…
laterally deep to sartorius and rectus femoris
transverse branch pierces lateralis, descending branch poster to RF supplying lateralis to knee
ant/post branches of internal iliac artery
anterior: obturator artery internal pudendal artery inferior gluteal artery posterior: superior gluteal artery
Trendelenburg Sign
- from weakness of gluteus medius and minimus
- seen in dropping of non weight bearing hip during gait
contents of greater sciatic foramen
- superior gluteal artery, vein and nerve
- inferior gluteal artery, vein and nerve
- piriformis
- sciatic nerve
- posterior femoral cutaneous n.
- nerve to obturator internus
- internal pudendal artery and vein
- pudental nerve
- nerve to quadratus femoris
contents of lesser sciatic foramen
- obturator internus tendon
- internal pudendal artery and vein
- pudendal nerve
- nerve to obturator internus
to be considered a hamstring it must:
- cross two joints
- innervated by tibial nerve
- originate from the ischial tuberosity