Knee and Below attchments and innervations Flashcards
Vastus Intermedius (Action)
Knee Extension
Biceps Femoris (Action)
Knee Flexion
Biceps Femoris (PA and DA)
PA- ischial tuberosity DA- fibular head; lat condyle of tibia and fascia of lateral leg
Semimembranosus (Action)
Knee Flexion
Extensor Hallucis Longus (Innervation)
Deep Peroneal
Extensor Hallucis Longus (PA and DA)
PA- middle of fibula and interosseous membrane DA- dorsal base of distal phalanx of great toe
Peroneus Tertius (Action)
eversion at the subtalar joint, ankle dorsiflexion
Gracilis (Action)
Hip Adduction, Hip Flexion, Knee Flexion and adduction (?)
Gracilis (PA and DA)
PA- inferior pubic ramus and lower body of pubis DA- proximal medial surface of tibia: part of the pes anserinus
Gastrocnemius (spinal level)
S1-S2
(tibial nerve)
Tibialis Anterior (Innervation)
Deep Peroneal N
(L4-S1)
Flexor Hallucis Longus (Innervation)
Tibial N
Peroneus Brevis (Innervation)
Superficial Peroneal N (L4-S1)
Abductor Digiti Minimi (PA and DA)
PA- 5th metatarsal (book- medial and lateral processes of the calcaneal tuberosity, plantar aponeurosis, and plantar surface of the base of the fifth metatarsal bone with flexor digiti minimi) DA- lateral aspect of 5th proximal phalanx
Tibialis Anterior (Action)
dorsiflexion of ankle and supination of foot (subtalar joint)
TFL (Action)
Hip Abduction/ IR
flexor digiti minimi brevis (spinal level)
Tibial S1-S2
(lateral plantar nerve)
Sartorius (PA and DA)
PA- ASIS DA- prox med surface of the tibia; pes anserinus
Gastrocnemius (Innervation)
Tibial N
Soleus (Action)
plantarflexion of ankle
Gastrocnemius (Action)
plantarflexion of ankle; knee flexion
peroneus longus (spinal level)
L4-S1
(superficial peroneal nerve)
Lateral Plantar Nerve: Spinal Levels
Tibial S1-S2 for the following intrinsic foot muscles:
- Quadratus Plantae
- Digits 3-5 Lumbricals
- Interossei (plantar & dorsal)
- Adductor hallucis
- Flexor digiti minimi brevis
- Abductor digiti minimi
Semitendinosus (Innervation)
Tibial part of Sciatic N
Extensor hallucis longus (spinal level)
L4-S1
(deep peroneal nerve)
tibialis anterior (spinal level)
L4-S1
(deep peroneal nerve)
Flexor Hallucis Brevis (PA and DA)
PA- plantar surface of cuboid and lateral cuneiform DA- sides of the base of the proximal phalanx
Flexor Hallucis Brevis (Action)
flexes hallux
Semitendinosus’ (Action)
knee flexion
Flexor Digiti Minimi Brevis (Innervation)
lateral plantar N
Popliteus (PA and DA)
PA- lateral aspect of the lateral femoral epicondyle and posterior capsule DA- posterior surface of the proximal tibia superior to the soleal line
Flexor Digitorum (Longus) (Innervation)
Tibial N
Extensor digitorum longus (spinal level)
L4-S1 (deep paroneal N)
Flexor Digitorum (Longus) (PA and DA)
PA- posterior surface of middle 1/3 of tibia medial to the proximal attachment of the tibialis posterior DA- 4 separate tendons to the base of the distal phalanx of the 4 lesser toes
Extensor Digitorum Brevis (Action)
Extends 2nd -5th MTP and IPs
Semitendinosus (PA and DA)
PA- iscchial tuberosity DA- posterior medial tibia: pes anserinus
Flexor Hallucis Longus (Action)
flexion of great toe, plantarflexion/supination of ankle
Gracilis (Innervation)
Obturator N
Peroneus Tertius (PA and DA)
PA- distal 1/3 of anterior** surface of the fibula and adjacent interosseous membrane **book says medial DA- dorsal surface of base of the fifth metatarsal
Deep Perneal Nerve: Spinal Levels
L4-S1 for the anterior compartment muscles:
- Tibialis anterior
- extensor hallicis longus
- extensor digitorum longus
- Peroneus tertius
L5-S1 for muscles on dorsum of foot:
- Extensor digitorum brevis
- extensor hallucis brevis
Lumbricals (PA and DA)
PA- from the FDL tendons DA- medial side of the proximal phalanx and dorsal digital expansions (Book- each muscle crosses the medial side of each metatarsophalangeal joint to insert into the dorsal digit expansion of the four lesser toes)
Vastus Lateralis (PA and DA)
PA- intertrochanteric line, greater trochanter, gluteal tuberosity, linea aspera DA- patella, via patellar ligament to tibial tuberosity
Flexor Hallucis Brevis (Innervation)
medial plantar N
Soleus (PA and DA)
PA- posterior surface of fibular head and proximal 1/3 of shaft and posterior side of the tibia near the soleal line DA- calcaneal (achilles) tendon to calcaneal tuberosity
Vastus Intermedius (PA and DA)
PA- upper 2/3 femoral shaft, anterior surface DA- patella, via patellar ligament to tibial tuberosity
Plantaris (PA and DA)
PA- inferior part of lateral supracondylar line of femur and oblique popliteal ligament of knee DA- medial aspect of Achilles tendon to insert on the calcaneal tuberosity
quadratus plantae (spinal level)
Tibial S1-S2
(lateral plantar nerve)
flexor digitorum brevis (spinal level)
Tibial S1-S2
(medial plantar nerve)
Peroneus Longus (PA and DA)
PA- lateral condyle of tibia, head, and proximal 2/3 of lateral surface of the fibula DA- lateral surface of the medial cuneiform and lateral side of the base of 1st metatarsal
Tibialis Posterior (PA and DA)
PA- proximal 2/3 of posterior surface of the tibia and fibula and adjacent interosseous membrane DA- navicular tuberosity and medial cuneiform. all tarsals except talus, base of 2nd-4th metatarsal bones
Lumbricals (Innervations)
to the second toe- medial plantar N third to fifth toe- lateral plantar N
Quadratus Plantae (PA and DA)
PA- long plantar ligament and calcaneus (Book- by two heads from the medial and lateral aspects of the plantar surface of the plantar surface of the calcaneus, distal to the calcaneal tuberosity) DA- tendons of the FDL (Book- lateral border)
lumbricals (spinal level
Tibial S1-S2
(medial plantar nerve for digit 2, lateral plantar nerve for digits 3-5)
Vastus Lateralis (innervation)
Femoral N
Adductor Hallucis (Action)
adducts hallux
Quadratus Plantae (Action)
Corrects direction of pull for FDL (flexor digitorum longus)
Sartorius (Actions)
Hip Flexor/ ER, Knee Flexor/ IR
Vastus Lateralis (action)
Knee Ext
Popliteus (spinal level)
L4-S1
(tibial nerve)
Flexor Digiti Minimi Brevis (Action)
flexes 5th digit
Soleus (spinal level)
L5-S2
(tibial nerve)
Extensor digitorum brevis (spinal level)
L5-S1
(deep peroneal nerve)
Rectus Femoris (Action)
Hip Flexor/ Knee Extensor
Tibialis Posterior (Innervation)
Tibial N
Extensor Hallucis Longus (Action)
MP/IP extension of great toe, ankle dorsiflexion/Supination
Adductor Hallucis (PA and DA)
PA- plantar surface of the metatarsals (Book- Oblique head: planter aspect of the base of the second through fourth metatarsal and the fibrous sheath of the fibularis longus tendon; Transverse head- plantar aspect of the ligaments of that support the metarsophalangeal joints of the third through fifth toes) DA- lateral side base of the 1st proximal phalanx (Book- both heads converge to insert on the lateral base of the proximal phalanx of the greater toe along with the lateral tendon of the FHB)
Vastus Medialis (innervation)
Femoral N
Extensor Digitorum Longus (Innervation)
Deep Peroneal
Peroneus Tertius (spinal level)
L4-S1
(deep peroneal nerve)
Peroneus Longus (Innervation)
Superficial Peroneal N
Abductor Hallucis (Action)
abducts hallux
Semimembranosus (Innervation)
Tibial part of Sciatic N
abductor digiti minimi (spinal level)
Tibial S1-S2
(lateral plantar nerve)
Abductor Digiti Minimi (Innervation)
lateral plantar N
Flexor Digiti Minimi Brevis (PA and DA)
PA- 5th metatarsal (Book- plantar surface of the base of the fifth metatarsal bone and fibrous sheath of the fibularis longus tendon) DA- sides of the base of the 5th phalanx (Book- lateral surface of the base of the proximal phalanx of the fifth toe blending with the tendon of the abductor digiti minimi)
Vastus Intermedius (Innervation)
Femoral N
Plantaris (Innervation)
Tibial N
Peroneus Tertius (Innervation)
Deep Peroneal N
Flexor Hallucis Longus (PA and DA)
PA- distal 2/3 of posterior surface of fibula, intermuscular septa, & interosseus membrane. DA- plantar surface of the base of the distal phalanx of the great toe
flexor hallucis brevis (spinal level)
Tibial L5-S1
(medial plantar nerve)
Peroneus Brevis (Action)
eversion (pronation) of foot - subtalar joint, PF ankle
Rectus Femoris (Innervation)
Femoral N
Extensor Hallucis Brevis (PA and DA)
PA- superior/ lateral surface of calcaneus of calcaneus, talocalcaneal ligament DA- base of proximal phalanges of digit 1
Peroneus brevis (spinal level)
L4-S1
(superficial peroneal nerve)
Biceps Femoris (Innervation)
Tibial part of Sciatic N
Tibialis Posterior (Action)
plantarflexion of ankle and supination at subtalar joint
Interossei (Dorsal and Plantar) (PA and DA)
PA- adjacent metatarsals DA- sides and bases of proximal phalanx of same digit
Extensor Digitorum Longus (Action)
toe extension (MP/PIP/DIP ext digits 2-5), ankle dorsiflexion
Adductor Hallucis (Innervation)
Lateral plantar N (Tibial S1-S2)
Abductor Hallucis (PA and DA)
PA- medial calcaneus (Book- flexor rectinaculum, medial process of calcaneus and planter fascia) DA- medial side base of the 1st proximal phalanx
Superficial Peroneal Nerve: Spinal Levels
L4-S1 for the lateral compartment muscles:
- Peroneus longus
- Peroneus brevis
interossei, plantar & dorsal (spinal level)
Tibial S1-S2
(lateral plantar nerve)
Gastrocnemius (PA and DA)
PA- posterior surface of medial and lateral femoral condyles for medial and lateral heads DA- calcaneal (achilles) tendon to calcaneal tuberosity
Extensor hallucis brevis (spinal level)
L5-S1
(deep peroneal nerve)
abductor hallucis (spinal level)
Tibial L4-S1
(medial plantar nerve)
Vastus Medialis (PA and DA)
PA- intertrochanteric line, supracondylar line, linea aspera DA- patella, via patellar ligament to tibial tuberosity
Quadratus Plantae (Innervation)
lateral plantar N
Peroneus Longus (Action)
eversion (pronation) of foot - subtalar joint, transverse tarsal joint; PF ankle
Abductor Hallucis (Innervation)
medial plantar N
Flexor Digitorum Brevis (Innervation)
medial plantar N
TFL (PA and DA)
PA- iliac crest anterior to ASIS DA- proximal 1/3 of IT band
Extensor Digitorum Brevis (Innervation)
deep peroneal N
Extensor Digitorum Longus (PA and DA)
PA- lateral condyle of tibia, proximal 2/3 medial fibula, interosseous membrane DA- 4 tendons that attach to the proximal base of the dorsal surface of the middle and distal phalanges via the dorsal digital expansion
plantaris (spinal level)
L4-S1
(tibial nerve)
Soleus (Innervation)
Tibial N
Popliteus (Innervation)
Tibial N
TFL (Innervation)
Superior Gluteal N
Plantaris (Action)
plantarflexion of ankle
Flexor Digitorum Brevis (Action)
Flexion of 2nd-5th ATP and PIP
Tibial Nerve: Spinal Levels
L4-S1 for the following muscles:
- Popliteus
- Plantaris
- Tibialis posterior
L5-S2 for the following muscles:
- Soleus
- Flexor digitorum longus
- flexor hallicis longus
S1-S2 for the following muscles:
- Gastrocnemius
Interossei (Dorsal and Plantar) (Innervation)
lateral plantar N
Flexor Digitorum (Longus) (Action)
Flex MP/IP’s digits 2-5 plantarflex/ supinate ankle
adductor hallucis (spinal level)
Tibial S1-S2
(lateral plantar nerve)
Flexor Digitorum Brevis (PA and DA)
PA- medial and lateral calcaneal tubercles and plantar aponeurosis (Book-central part of the plantar fascia) DA- side of the middle phalanges (Book- each of the four tendons split and inserts on the sides of the plantar aspect of the base of the middle phalanx of the lesser toes)
Medial Planter Nerve: Spinal Levels
Tibial L4-S1 for the following intrinsic foot muscles:
- Abductor hallucis
Tibial L5-S1 for the following intrinsic foot muscles:
- Flexor hallucis brevis
Tibial S1-S2 for the following intrinsic foot muscles:
- Flexor digitorum brevis
- Digit 2 Lumbrical
Lumbricals (Actions)
flexion MTP, extends planges, digits 2-5
Peroneus Brevis (PA and DA)
PA- distal 2/3 of lateral surface of fibula DA- styloid process of 5th metatarsal
Sartorius (Innervation)
Femoral N
Extensor Digitorum Brevis (PA and DA)
PA- superior/ lateral surface of calcaneus (just proximal to the calcaneocuboid joint) DA- base of proximal phalanges of digit 2-5
flexor hallucis longus (spinal level)
L5-S2
(tibial nerve)
Extensor Hallucis Brevis (Action)
extends 1st MTP
Extensor Hallucis Brevis (Innervation)
deep peroneal
tibialis posterior (spinal level)
L4-S1
(tibial nerve)
Tibialis Anterior (PA and DA)
PA- lateral condyle and proximal 2/3 of lateral surface of tibia and interosseous membrane DA- base of the first metatarsal and medial and plantar surface of the medial cuneiform
flexor digitorum longus (spinal level)
L5-S2
(tibial nerve)
Vastus Medialis (action)
knee extension
Abductor Digiti Minimi (Action)
abducts 5th digits
Interossei (Dorsal and Plantar) (Actions)
Dorsal- abduct of digits 3-5 Plantar- adducts
Popliteus (Action)
knee flexion and internal rotation (unlocking of the knee)
Semimembranosus (PA and DA)
PA- ischial tuberosity DA- medial meniscus, MCL, posterior medial tibia, OPL, popliteus
Rectus Femoris (PA and DA)
PA- AIIS DA- patella, via patellar ligament to tibial tuberosity