Exam 3 - Joints Of The Lower Limb Flashcards
What muscles flex the hip?
Iliopsoas
Rectus femoris
Sartorius
What muscles extend the hip?
Gluteus Maximus
Hamstring muscles
What muscles abduct the hip?
Gluteus medius
Gluteus minimus
Sartorius
Tensor fasciae latae
What muscles adduct the hip?
Adductor longus Adductor brevis Adductor Magnus Gracilis Pectineus
What muscles laterally rotate the hip?
Piriformis Obturator internus/externus Superior/inferior gemelli Quadratis femoris Gluteus Maximus
What muscles medially rotate the hip?
Gluteus medius
Gluteus minimus
Tensor fasciae latae
When is the ankle joint most stable?
During dorsiflexion
Excessive inversion of the foot and plantar flexion of the ankle damage what ligament (at what joint?)?
Anterior talofibular ligament at the ankle joint
*Note: the calcaneofibular ligament and 5th metatarsal may also be damaged with this
What three joints are the main joints responsible for eversion and inversion of the foot?
Transverse tarsal joints: talocalcaneonavicular and calcaneocuboid
Subtalar joint
Which muscle “unlocks” the knee joint?
Popliteus - it medially rotates the tibia and laterally rotates the femur
What is the main support of the medial arch (i.e. what ligament)?
Plantar-calcaneonavicular ligament
What is the main support of the lateral arch?
Long plantar ligament with support from short plantar ligament also
Which ankle ligament (medial or lateral) is stronger?
Medial (deltoid) ligament
A patient’s tibia can be pulled excessively forward on the femur. What ligament is torn?
ACL
Which ligament at the hip resists over abduction by the superior gluteal muscles (gluteus minimus, gluteus medius, and tensor fasciae latae)?
Pubofemoral ligament
