Posterior thigh Flashcards
What are the hamstrings innervated by
Sciatic nerve (L4-S3)
What are the muscles in the posterior thigh
Biceps femoris,
Semitendinosus,
Semimembranosus
Action of hamstrings
Flexion at knee and extension at hip
Origin of biceps femoris
Long head - Ischial tuberosity of pelvis
Short head - Linea aspera on posterior femur
Actions of biceps femoris
Knee flexion,
Hip extension,
Lateral rotation at hip and knee
Innervation of biceps femoris
Long head - tibial part of sciatic nerve
Short head - common fibular part of sciatic nerve
Origin of semitendinosus
Ischial tuberosity of pelvis
Attachment of biceps femoris
Head of fibula
Attachment of semitendinosus
Medial tibia
Actions of semitendinosus
Knee flexion,
Hip extension,
Medial rotation at hip and knee
Innervation of semitendinosus
Tibial part of sciatic nerve
Origin of semimembranosus
Ischial tuberosity of pelvis (more superiorly than others)
Attachment of semimembranosus
Medial tibial condyle
Action of semimembranosus
Knee flexion,
Hip extension,
Medial rotation at hip and knee
Innervation of semimembranosus
Tibial part of sciatic nerve