Class 2 Flashcards
What innervates gluteus maximus
Interior gluteal nerve
Below piriformis
What supplies tensor fasciae latae, gluteus minimis (flat over bone) and medius
Superior gluteal nerve
What is the iliotibila tract
Thickened fascia where gluteus Maximus and tensor fascia late attach
What are the deep muscles of the gluteal region
Piriformis - goes up to sacrum
Obturator internus - in between gemelli
Superior and inferior gemelli - two small muscles
Quadratus femoris - larger square muscle further down
What is the action of the deep muscles
Lateral rotation
What are the nerve roots of the sacral plexus
L4-S4
What are the main branches of the sacral plexus
Sciatic nerve Pudendal nerve (more medial)
Where does the sciatic nerve emerge
Inferior and anterior to piriformis
Where does sciatic nerve travel between
Two heads of biceps femoris
What is the nerve root of superior gluteal nerve
L4-S1
What is the nerve root of the inferior gluteal nerve
L5-S2
What does sciatic nerve bifurcate into at popliteal fossa
Tibial
Common fibular nerve
What is the nerve roots of tibial
L4-S3
What is the nerve root of common fibular
L4-S3
What does common fibular divide into and what does it supply
Superficial fibular (L4-S1) - lateral compartment Deep fibular (L4-L5) - anterior compartment beside tibial artery
Where does common fibular nerve pass between
Attachments of fibularis longus
What type of joint is the knee joint
Synovial hinge
What makes up the knee joint
Medial and lateral condyles of femur
Tibia
Posterior surface of patella
What ligaments support the knee joint
Lateral collateral Medial collateral Patellar ACL PCL
What tendon separates lateral collateral from lateral meniscus
Popliteal
What is the unhappy triad
Medial collateral attached to medial cruciate
so if damaged ACL tears due to load
What does ACL prevent
Posterior dislocation
Poor blood supply so commonly injured
What does PCL prevent
Hyperflexion and anterior dislocation
What are menisci
Fibrocartilage
Increase stability
Shock absorption
What muscles are involved in flexion of the knee
Hamstrings Gracillis Sartorius Popliteus Gastrocnemius
What muscles are involved in extension
Quadriceps
What meniscus is smaller and more circular
Lateral
ACL infant of it
