Flashcards in Chapter 8 Lower Extremity Anatomy Deck (38):
Primary hip extensor?
Primary hip flexor?
Primary knee extensor?
Primary knee flexors?
Semimembranosus and semitendinosus
4 ligaments that make up femoroacetabular joint?
4) Capitis femoris
What ligament attaches the head of the femur to the acetabular fossa?
What are the minor motions of the hip?
Anterior and posterior glide
What motion occurs with anterior glide of the head of the femur?
What motion occurs with posterior glide of the head of the femur?
Etiologies of hip external rotation SD?
Piriformis or iliopsoas spasm
Etiologies of hip internal rotation SD?
Spasm of internal rotators
3 joints that make up the knee?
What is the largest joint in the body?
What is the origin and insertion of the ACL?
Originates at posterior aspect of femur, attaches to anterior aspect of tibia
Origin and insertion of the PCL?
Originates at anterior aspect of femur and inserts on posterior aspect of tibia
Which ligament articulates with the medial meniscus and helps prevent valgus stress at the knee?
Medial collateral ligament
Attachments of the lateral collateral ligament?
Femur and fibula
Mvt of the tibiofibular joint occurs with what motions of the foot?
Pronation and supination
What motion occurs when the fibular head glides anteriorly?
What motion occurs when the fibular head glides posteriorly?
Dorsiflexion, eversion, abduction
Plantarflexion, inversion, adduction
Pronation of foot causes what fibular motion?
Causes talus to push distal fibula posteriorly allowing anterior glide proximally
Supination of the foot causes what fibular motion?
Causes anterior talofibular ligament to pull distal fibula anteriorly, and allows proximal fibula to glide posteriorly
Femoral nerve roots?
Sciatic nerve roots?
Femoral n innervations?
Quads, iliacus, sartorius and pectineus
Which foramen does the sciatic n pass thru?
Greater sciatic foramen
85% of population, the sciatic n will be in what relation to piriformis?
Inferior to piriformis
Innervation of short head of biceps femoris?
Peroneal division of sciatic n
Angulation of head of the femur?
Normally 120-135 degrees
Angulation of femur
Angulation of femur >135
Formed by intersection of a line from ASIS thru middle of patella, and a line from tibial tubercle thru middle of patella
Normal Q angle?
Increased Q angle (knocked-kneed)
Decreased Q angle (bow-legged)