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20 Cards in this Set
- Front
- Back
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POPLITEUS
O-I-A-N |
O: lateral condyle of femur
I; Posterior shaft of tibia above soleal line and below tibial condyles A: Unlocks extended knee by lateral rotation of femur on tibia. Pulls back lateral meniscus N: Tibial nerve (L5,S1) "the key to the knee" |
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Muscles that attach onto the Pes Ansserinus...
"say grace before tea" |
Sartorius
Gracilis Semitendinosus |
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"Q- Angle"
how defined? how increased? |
Defined as the angle from the ASIS to the middle of the patella to the tibial tubercle
Increased by: Increased pelvic width, Femoral anteversion , Tibial external rotation Ankle pronation |
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Ankle Dorsiflexors
3 muscles |
Tibialis anterior
*Extensor hallucis longus *Peroneus Tertius |
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TIBIALIS ANTERIOR
O-I-A-N |
O: tibia
I: medial cuneiform and base of 1st metatarsal A: Extends and inverts foot at ankle. Holds up medial longitudinal arch of foot N: Deep peroneal nerve (L4, 5) |
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PERONEUS TERTIUS
O-I-A-N |
O: fibula
I: base of 5th metatarsal A: Extends and everts foot N: Deep peroneal nerve (L5,S1) |
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Ankle Plantarflexors
Superficial to Deep- 4 muscles |
Gastrocnemius
Plantaris Gastroc Soleus *Tibialis posterior |
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Ankle Plantarflexors
Lateral- 2 muscles |
Peroneus Longus
*Peroneus Brevis |
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GASTROCNEMIUS
O-I-A-N |
O: lat head- lateral condyle of femur, med. head- medial condyle of femur
I: calcaneus via Achilles tendon A: Plantar flexes foot. Flexes knee N: Tibial nerve (S1, 2) |
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PLANTARIS
O-I-A-N |
O: femur
I: calcaneus via Achilles tendon A: Plantar flexes foot and flexes knee N: Tibial nerve (S1, 2) |
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SOLEUS
O-I-A-N |
O: posterior border of tibia and fibula
I: calcaneus via Achilles tendon A: Plantar flexes foot (aids venous return) N: Tibial nerve (S1, 2) |
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TIBIALIS POSTERIOR
O-I-A-N |
O: tibia
I: navicular bone A: Plantar flexes and inverts foot. Supports medial longitudinal arch of foot N: Tibial nerve (L4, 5) |
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PERONEUS LONGUS
O-I-A-N |
O: fibula
I: medial cuneiform, A: Plantar flexes and everts foot. Supports lateral longitudinal and transverse arches N: Superficial peroneal nerve (L5,S1) |
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PERONEUS BREVIS
O-I-A-N |
O: fibula
I: base of 5th metatarsal A: Plantar flexes and everts foot . Supports lateral longitudinal arch N: Superficial peroneal nerve (L5, S1) |
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Ankle Invertors
Primary Mover- 1 muscle Secondary Mover- 4 muscles |
Primary action: Tibialis posterior
Secondary action: Tibialis anterior Gastrocnemius Flexor digitorum longus Flexor hallucis longus |
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Ankle Evertors
Primary Mover- 3 muscles Secondary Movers- 2 muscles |
Primary action:
Peroneus longus Peroneus brevis Peroneus tertius Secondary action Extensor digitorum longus Extensor hallucis longus |
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"Stirrup Muscles"
which muscles comprise this structure? |
peroneus longus and tibialis posterior both wrap under foot and cross, forming a stirrup under the foot to support the arches
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FLEXOR DIGITORUM LONGUS
O-I-A-N |
O: tibia
I: Base of distal phalanges of lateral four toes A: Flexes distal phalanges of lateral four toes and foot at ankle. Supports lateral longitudinal arch N: Tibial nerve (S1, 2) |
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FLEXOR HALLUCIS LONGUS
O-I-A-N |
O: fibula
I: Base of distal phalanx of big toe A: Flexes distal phalanx of big toe, flexes foot at ankle, supports medial longitudinal arch N: Tibial nerve (S2, 3) |
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EXTENSOR DIGITORUM LONGUS
O-I-A-N |
O: fibula
I: Extensor expansion of lateral four toe A: Extends toes and extends foot at ankle N: Deep peroneal nerve (L5, S1) |
