Lower Quarter Muscle Origins, Insertions, Actions, And Innervations

Front 1

rectus femoris origin

Back 1

straight head: from the AIIS
reflected head: from the groove above the rim of the acetabulum

Front 2

rectus femoris insertion

Back 2

proximal border of the patella and through patellar ligament to the tibial tuberosity

Front 3

rectus femoris actions

Back 3

knee extension and assists iliopsoas to flex the thigh

Front 4

rectus femoris peripheral innervation

Back 4

femoral nerve

Front 5

rectus femoris segmental innervation

Back 5

L2, L3, and L4

Front 6

vastus medialis origin

Back 6

distal 1/2 of the intertrochanteric line, medial lip of the linea aspera, proximal part of the medial supracondylar line, tendons of adductor longus and adductor magnus, and medial intermuscular septum

Front 7

vastus medialis insertion

Back 7

proximal border of patella and through patellar ligament to the tibial tuberosity

Front 8

vastus medialis action

Back 8

knee extension

Front 9

vastus medialis peripheral innervation

Back 9

femoral nerve

Front 10

vastus medialis segmental innervation

Back 10

L2, L3, and L4

Front 11

vastus lateralis origin

Back 11

proximal part of the intertrochanteric line, anterior and inferior borders of the greater trochanter, lateral lip of the gluteal tuberosity, proximal 1/2 of lateral lip of linea aspera, and lateral intermuscular septum

Front 12

vastus lateralis insertion

Back 12

proximal border of patella and through patellar ligament to tibial tuberosity

Front 13

vastus lateralis action

Back 13

knee extension

Front 14

vastus lateralis peripheral innervation

Back 14

femoral nerve

Front 15

vastus lateralis segmental innervation

Back 15

L2, L3, and L4

Front 16

vastus intermedius origin

Back 16

anterior and lateral surfaces of proximal 2/3 of body of femur, distal 1/2 of linea aspera, and lateral intermuscular septum

Front 17

vastus intermedius insertion

Back 17

proximal border of patella and through patellar ligament to the tibial tuberosity

Front 18

vastus intermedius action

Back 18

knee extension

Front 19

vastus intermedius peripheral innervation

Back 19

femoral nerve

Front 20

vastus intermedius segmental innervation

Back 20

L2, L3, and L4

Front 21

sartorius origin

Back 21

ASIS and superior 1/2 of notch just distal to the spine

Front 22

sartorius insertion

Back 22

proximal point of the medial surface of the tibia near the anterior border

Front 23

sartorius actions

Back 23

hip flexion, hip abduction, hip lateral rotation, knee flexion and assists in knee medial rotation

Front 24

sartorius peripheral innervation

Back 24

femoral nerve

Front 25

sartorius segmental innervation

Back 25

L2, L3, and (L4)

Front 26

tensor fascia latae origin

Back 26

anterior part of the external lip of iliac crest, outer surface of the ASIS, and deep surface of the fascia lata

Front 27

tensor fascia latae insertion

Back 27

into the IT tract of fascia lata at junction of the proximal and middle thirds of the thigh

Front 28

tensor fascia latae actions

Back 28

hip abduction, medial rotation, and hip flexion; assists with knee extension and tenses the fascia lata

Front 29

tensor fascia latae peripheral inervation

Back 29

superior gluteal nerve

Front 30

tensor fascia latae segmental innervation

Back 30

L4, L5, and S1

Front 31

iliopsoas origin

Back 31

Psoas major: ventral surface of the transverse processes of all lumbar vertebrae, sides of the bodies and corresponding intervertebral discs of last thoracic and all lumbar vertebrae and membranous arches that extend over the sides of bodies of lumbar vertebrae
Iliacus:
Superior 2/3 of iliac fossa, internal lip of iliac crest, iliolumbar and ventral SI ligaments and sacral ala

Front 32

iliopsoas insertion

Back 32

lesser trochanter of the femur

Front 33

iliopsoas actions

Back 33

hip flexion, assists in hip lateral rotation and abduction
with insertion fixed: bilaterally flexes the trunk on the femurs and increases lumbar lordosis, unilaterally assists in lateral flexion of the trunk to the same side; if the trunk is stable, it contributes to anterior shear of the lumbar spine

Front 34

iliopsoas peripheral innervation

Back 34

Psoas major: anterior rami of the lumbar spinal nerves 1, 2, and 3
iliacus: femoral nerve

Front 35

iliopsoas segmental innervation

Back 35

L(1), 2, 3, (4)

Front 36

pectineus origin

Back 36

surface of the superior ramus of the pubis ventral to the pectin between the iliopectineal eminence and the pubic tubercle

Front 37

pectineus insertion

Back 37

pectineal line of the femur

Front 38

pectineus actions

Back 38

hip adduction and hip flexion

Front 39

pectineus peripheral innervation

Back 39

femoral nerve, accessory obturator

Front 40

pectineus segmental innervation

Back 40

L2, 3, (4)

Front 41

adductor longus origin

Back 41

anterior surface of the pubis at the intersection of the crest and symphysis

Front 42

adductor longus insertion

Back 42

middle 1/3 of medial lip of the linea aspera

Front 43

adductor longus actions

Back 43

hip adduction and hip flexion

Front 44

adductor longus peripheral innervation

Back 44

obturator nerve

Front 45

adductor longus segmental innervation

Back 45

L2, 3, (4)

Front 46

adductor brevis origin

Back 46

outer surface of the inferior ramus of the pubis

Front 47

adductor brevis insertion

Back 47

distal 2/3 of the pectineal line and proximal 1/2 of the medial lip of the linea aspera

Front 48

adductor brevis actions

Back 48

hip adduction and hip flexion

Front 49

adductor brevis peripheral innervation

Back 49

obturator nerve

Front 50

adductor brevis segmental innervation

Back 50

L2, L3, and L4

Front 51

adductor magnus origin

Back 51

inferior pubic ramus, ramus of the ischium (anterior fibers) and the ischial tuberosity (posterior fibers)

Front 52

adductor magnus insertion

Back 52

medial to the gluteal tuberosity, middle of the linea aspera, medial supracondylar line, and adductor tubercle of the medial condyle of the femur

Front 53

adductor magnus actions

Back 53

hip adduction, hip flexion, and hip extension

Front 54

adductor magnus peripheral innervation

Back 54

Obturator nerve and tibial division of the sciatic nerve

Front 55

adductor magnus segmental innervation

Back 55

L (2), 3, 4 (obturator)
L4, (5), (S1) (sciatic)

Front 56

obturator externus origin

Back 56

rami of pubis and ischium, external surface of the obturator membrane

Front 57

obturator externus insertion

Back 57

trochanteric fossa of the femur

Front 58

obturator externus actions

Back 58

hip lateral rotation, assists in hip adduction

Front 59

obturator externus peripheral innervation

Back 59

obturator nerve

Front 60

obturator externus segmental innervation

Back 60

L3 and L4

Front 61

gracilis origin

Back 61

inferior 1/2 of the pubic symphysis and medial margin of the inferior ramus of the pubic bone

Front 62

gracilis insertion

Back 62

medial surface of the body of the tibia, distal to the condyle, proximal to the insertion of the semitendinosus, and lateral to the insertion of the sartorius

Front 63

gracilis actions

Back 63

hip adduction, assists in knee medial rotation and knee flexion

Front 64

gracilis peripheral innervation

Back 64

obturator nerve

Front 65

gracilis segmental innervation

Back 65

L2, L3, and L4

Front 66

gluteus maximus origin

Back 66

posterior gluteal line of ilium and portion of bone superior and posterior to it, posterior surface of lower part of sacrum, side of coccyx, aponeurosis of erector spinae, sacrotuberous ligament, and gluteal aponeurosis

Front 67

gluteus maximus insertion

Back 67

larger proximal part and superficial fibers of distal portion insert into the IT tract of the fascia lata; deep fibers of distal part insert into the gluteal tuberosity of the femur

Front 68

gluteus maximus actions

Back 68

hip extension, hip lateral rotation
lower fibers: assist in hip adduction
upper fibers: assist in abduction and stabilizing the knee in extension through the IT band insertion

Front 69

gluteus maximus peripheral innervation

Back 69

inferior gluteal nerve

Front 70

gluteus maximus segmental innervation

Back 70

L5, S1, and S2

Front 71

gluteus medius origin

Back 71

external surface of the ilium between the iliac crest and posterior gluteal line dorsally, and anterior gluteal line ventrally, gluteal aponeurosis

Front 72

gluteus medius insertion

Back 72

oblique ridge of lateral surface of the greater trochanter of the femur

Front 73

gluteus medius actions

Back 73

hip abduction, anterior fibers: hip medial rotation and assist with hip flexion; posterior fibers: hip lateral rotation and assist with hip extension

Front 74

gluteus medius segmental innervation

Back 74

L4, L5, and S1

Front 75

gluteus minimus origin

Back 75

external surface of the ilium between the anterior and inferior gluteal line, and margin of greater sciatic notch

Front 76

gluteus minimus insertion

Back 76

anterior border of the greater trochanter, hip joint capsule

Front 77

gluteus minimus actions

Back 77

hip abduction, medial rotation, and assists with hip flexion

Front 78

gluteus medius peripheral innervation

Back 78

superior gluteal

Front 79

gluteus minimus peripheral innervation

Back 79

superior gluteal

Front 80

gluteus minimus segmental innervation

Back 80

L4, L5, and S1

Front 81

piriformis origin

Back 81

surface of the sacrum between 1,2,3, and 4 pelvic sacrum foramina, margin of the greater sciatic foramen, and pelvic surface of sacrotuberous ligament

Front 82

piriformis insertion

Back 82

superior border of greater trochanter

Front 83

piriformis actions

Back 83

laterally rotates the extended hip, flexes the abducted hip, assist in hip extension and stabilizes the femoral head in the acetabulum

Front 84

piriformis peripheral innervation

Back 84

nerve to piriformis

Front 85

piriformis segmental innervation

Back 85

L(5), S1, and S2

Front 86

superior gemelli origin

Back 86

external surface of the ischial spine

Front 87

superior gemelli insertion

Back 87

with tendon of obturator internus into the medial surface of the greater trochanter

Front 88

superior gemelli actions

Back 88

laterally rotates the extended hip, abducts the flexed hip, stabilizes the femoral head in the acetabulum

Front 89

superior gemelli peripheral innervation

Back 89

nerve to obturator internus and superior gemelli

Front 90

superior gemelli segmental innervation

Back 90

L5, S1, and S2

Front 91

inferior gemelli origin

Back 91

proximal part of the tuberosity of the ischium

Front 92

inferior gemelli insertion

Back 92

with tendon of obturator internus into the medial surface of the greater trochanter

Front 93

inferior gemelli action

Back 93

laterally rotates the extended hip, abducts the flexed hip, and stabilizes the femoral head in the acetabulum

Front 94

inferior gemelli peripheral innervation

Back 94

nerve to quadratus femoris and inferior gemelli

Front 95

inferior gemelli segmental innervation

Back 95

L4, L5, S1, and (S2)

Front 96

obturator internus origin

Back 96

internal/pelvic surface of the obturator membrane and margin of the obturator foramen, pelvic surface of the ischium, posterior and proximal to obturator foramen, and to slight extent from the obturator fascia

Front 97

obturator internus insertion

Back 97

medial surface of the greater trochanter

Front 98

obturator internus actions

Back 98

laterally rotates the extended hip, abducts the flexed hip, and stabilizes the femoral head in the acetabulum

Front 99

obturator internus peripheral innervation

Back 99

nerve to the obturator internus and the superior gemelli

Front 100

obturator internus segmental innervation

Back 100

L5, S1, and S2

Front 101

quadratus femoris origin

Back 101

proximal part of the lateral border of the ischial tuberosity

Front 102

quadratus femoris insertion

Back 102

proximal part of the quadrate line extending distally from the intertrochanteric crest

Front 103

quadratus femoris actions

Back 103

laterally rotates the extended hip, abducts the flexed hip, and stabilizes the femoral head in the acetabulum

Front 104

quadratus femoris peripheral innervation

Back 104

nerve to the quadratus femoris and the inferior gemelli

Front 105

quadratus femoris segmental innervation

Back 105

L4, L5, S1, (S2)

Front 106

biceps femoris long head origin

Back 106

distal part of the sacrotuberous ligament, posterior part of the ischial tuberosity

Front 107

biceps femoris long head insertion

Back 107

lateral side of the fibular head, lateral condyle of the tibia, deep fascia and lateral side of the leg

Front 108

biceps femoris long head actions

Back 108

knee flexion and knee lateral rotation, hip extension, assists in hip lateral rotation

Front 109

biceps femoris long head peripheral innervation

Back 109

tibial nerve

Front 110

biceps femoris long head segmental innervation

Back 110

(L5), S1, S2, (S3)

Front 111

biceps femoris short head origin

Back 111

lateral lip of linea aspera, proximal 2/3 of supracondylar line, and lateral intermuscular septum

Front 112

biceps femoris short head insertion

Back 112

lateral side of the fibular head, lateral tibial condyle, deep fascia on the lateral side of the leg

Front 113

biceps femoris short head action

Back 113

knee flexion and lateral rotation

Front 114

biceps femoris short head peripheral innervation

Back 114

common peroneal

Front 115

biceps femoris short head segmental innervation

Back 115

L5, S1, S2

Front 116

semitendinosus origin

Back 116

ischial tuberosity by tendon common with long head of the biceps femoris

Front 117

semitendinosus insertion

Back 117

proximal part of the medial surface of the body of tibia, deep fascia of the leg

Front 118

semitendinosus action

Back 118

knee flexion and knee medial rotation, hip extension, and assist in hip medial rotation

Front 119

semitendinosus peripheral innervation

Back 119

tibial

Front 120

semitendinosus segmental innervation

Back 120

(L4), L5, S1, S2

Front 121

semimembranosus origin

Back 121

ischial tuberosity, proximal and lateral to biceps femoris and semitendinosus

Front 122

semimembranosus insertion

Back 122

posteromedial aspect of the medial condyle of the tibia

Front 123

semimembranosus actions

Back 123

knee flexion and knee medial rotation, hip extension, and assist in hip medial rotation

Front 124

semimembranosus peripheral innervation

Back 124

tibial

Front 125

semimembranosus segmental innervation

Back 125

(L4), L5, S1, (S2)

Front 126

gastrocnemius medial head origin

Back 126

medial head: proximal and posterior part of medial condyle and adjacent part of femur, capsule of knee joint

Front 127

gastrocnemius medial head insertion

Back 127

middle part of posterior surface of calcaneus

Front 128

gastrocnemius medial head actions

Back 128

talocrural plantar flexion, assists in knee flexion, subtalar joint inversion (supination)

Front 129

gastrocnemius medial head peripheral innervation

Back 129

tibial

Front 130

gastrocnemius medial head segmental innervation

Back 130

S1, S2

Front 131

gastrocnemius lateral head origin

Back 131

lateral condyle and posterior surface of femur, capsule of knee

Front 132

gastrocnemius lateral head insertion

Back 132

middle part of posterior surface of calcaneus

Front 133

gastrocnemius lateral head actions

Back 133

talocrural plantar flexion and assists in knee flexion

Front 134

gastrocnemius lateral head peripheral innervation

Back 134

tibial

Front 135

gastrocnemius lateral head segmental innervation

Back 135

S1, S2

Front 136

soleus origin

Back 136

posterior surfaces of the head of the fibula and proximal 1/3 of its body, soleal line, and middle 1/3 of medial border of tibia, and tendinous arch between tibia and fibula

Front 137

soleus insertion

Back 137

posterior part of calcaneus

Front 138

soleus action

Back 138

talocrural plantar flexion and subtalar joint inversion (supination)

Front 139

soleus peripheral innervation

Back 139

tibial

Front 140

soleus segmental innervation

Back 140

(L5), S1, S2

Front 141

flexor hallucis longus origin

Back 141

posterior surface of distal 2/3 of fibula, interosseous membrane, and adjacent intermuscular septa and fascia

Front 142

flexor hallucis longus insertion

Back 142

base of distal phalanx of great toe, plantar surface

Front 143

flexor hallucis longus actions

Back 143

great toe IP flexion, assists in MTP flexion, ankle plantarflexion, and foot inversion

Front 144

flexor hallucis longus peripheral innervation

Back 144

tibial

Front 145

flexor hallucis longus segmental innervation

Back 145

L5, S1, S2

Front 146

flexor digitorum longus origin

Back 146

middle 3/5 of posterior surface of body of tibia and from fascia covering the posterior tibialis

Front 147

flexor digitorum longus insertion

Back 147

bases of distal phalanges of 2-5th digits

Front 148

flexor digitorum longus actions

Back 148

proximal and distal IP and MP flexion of 2-5 digits, assists in plantar flexion of ankle and inversion of foot

Front 149

flexor digitorum longus peripheral innervation

Back 149

tibial

Front 150

flexor digitorum longus segmental innervation

Back 150

L5, S1, (S2)

Front 151

tibialis posterior origin

Back 151

most of interosseous membrane, lateral portion of posterior surface of tibia, proximal 2/3 of medial surface of fibula, adjacent intermuscular septa, and deep fascia

Front 152

tibialis posterior insertion

Back 152

tuberosity of navicular bone and by fibrous expansions to the sustentaculum tali, 3 cuneiforms, cuboid, and bases of 2,3,4th metatarsal bones

Front 153

tibialis posterior actions

Back 153

inversion and assists in ankle plantar flexion

Front 154

tibialis posterior peripheral innervation

Back 154

tibial

Front 155

tibialis posterior segmental innervation

Back 155

(L4), L5, S1

Front 156

extensor hallucis longus origin

Back 156

middle 2 quarters of anterior surface of fibula and adjacent interosseous membrane

Front 157

extensor hallucis longus insertion

Back 157

base of distal phalanx of great toe

Front 158

extensor hallucis longus actions

Back 158

great toe IP and MTP extension; assists in inversion of the foot and ankle dorsiflexion

Front 159

extensor hallucis longus peripheral innervation

Back 159

deep peroneal (fibular)

Front 160

extensor hallucis longus segmental innervation

Back 160

(L4), L5, S1

Front 161

extensor digitorum brevis origin

Back 161

distal part of the superior and lateral surfaces of calcaneus, lateral talocalcaneal ligament, and apex of inferior extensor retinaculum

Front 162

extensor digitorum brevis insertion

Back 162

by 4 tendons to 1-4th digits (most medial slip inserts into dorsal surface of base of proximal phalanx of great toe, other 3 tendons join lateral sides of the tendons of the extensor digitorum longus to 2,3,4th digits)

Front 163

extensor digitorum brevis actions

Back 163

extension of MTP of 1-4th digits, and assist in extension of IP joints 2-4

Front 164

extensor digitorum brevis peripheral innervation

Back 164

deep peroneal (fibular)

Front 165

extensor digitorum brevis segmental innervation

Back 165

(L4), L5, S1

Front 166

tibialis anterior origin

Back 166

lateral condyle and proximal 1/2 of lateral surface of the tibia, interosseous membrane, deep fascia, and lateral intermuscular septa

Front 167

tibialis anterior insertion

Back 167

medial and plantar surface of the medial cuneiform, base of the 1st metatarsal bone

Front 168

tibialis anterior actions

Back 168

ankle dorsiflexion and assists in inversion

Front 169

tibialis anterior peripheral innervation

Back 169

deep peroneal (fibular)

Front 170

tibialis anterior segmental innervation

Back 170

L4, L5, (S1)

Front 171

extensor digitorum longus origin

Back 171

lateral condyle of the tibia, proximal 3/4 of anterior surface of body of fibula, proximal part of interosseous membrane, adjacent intermuscular septa, and deep fascia

Front 172

extensor digitorum longus insertion

Back 172

by 4 tendons to the 2-5th toes, each tendon forms an expansion on the dorsal surface of the toe, and divides into an intermediate slip attached to the base of middle phalanx and into 2 lateral slips attaches to bases of distal phalanx

Front 173

extensor digitorum longus actions

Back 173

extends the MTP joints, assists in extension of IP 2-5th, dorsiflexion, and eversion

Front 174

extensor digitorum longus peripheral innervation

Back 174

deep peroneal (fibular)

Front 175

extensor digitorum longus segmental innervation

Back 175

L4, L5, S1

Front 176

fibularis (peroneus) tertius origin

Back 176

distal 1/3 of anterior surface of fibula, interosseous membrane, and adjacent intermuscular septa

Front 177

fibularis (peroneus) tertius insertion

Back 177

dorsal surface, base of 5th metatarsal

Front 178

fibularis (peroneus) tertius actions

Back 178

ankle dorsiflexion and foot eversion

Front 179

fibularis (peroneus) tertius peripheral innervation

Back 179

deep peroneal (fibular)

Front 180

fibularis (peroneus) tertius segmental innervation

Back 180

L4, L5, S1

Front 181

extensor hallucis brevis origin

Back 181

distal part of superior and lateral surfaces of the calcaneus, lateral talocalcaneal ligament, and apex of inferior extensor retinaculum

Front 182

extensor hallucis brevis insertion

Back 182

dorsal surface of base of the proximal phalanx of the great toe

Front 183

extensor hallucis brevis action

Back 183

great toe MTP extension

Front 184

extensor hallucis brevis peripheral innervation

Back 184

deep peroneal (fibular)

Front 185

extensor hallucis brevis segmental innervation

Back 185

(L4), L5, S1

Front 186

abductor hallucis origin

Back 186

medial process of tuberosity of calcaneus, flexor retinaculum, plantar aponeurosis, and adjacent intermuscular septum

Front 187

abductor hallucis insertion

Back 187

medial side of base of proximal phalanx of great toe (some fibers are attached to medial sesamoid bone, and a tendinous slip may extend to the base of the proximal phalanx of the great toe)

Front 188

abductor hallucis actions

Back 188

abduction of the MTP of the great toe, assist in MTP flexion and assists in forefoot adduction

Front 189

abductor hallucis peripheral innervation

Back 189

medial plantar

Front 190

abductor hallucis segmental innervation

Back 190

(L4), L5, S1

Front 191

fibularis longus origin

Back 191

lateral tibial condyle, head and proximal 2/3 of lateral surface of fibula, intermuscular septa, and adjacent deep fascia

Front 192

fibularis longus insertion

Back 192

lateral side of base of 1st metatarsal and of medial cuneiform bone

Front 193

fibularis longus actions

Back 193

eversion, assists in plantar flexion and depresses the first metatarsal head

Front 194

fibularis longus peripheral innervation

Back 194

superficial fibular

Front 195

fibularis longus segmental innervation

Back 195

(L4), L5, S1

Front 196

fibularis brevis origin

Back 196

distal 2/3 of lateral surface of fibula and adjacent intermuscular septa

Front 197

fibularis brevis insertion

Back 197

tuberosity at base of 5th metatarsal bone, lateral side

Front 198

fibularis brevis action

Back 198

eversion, assists in plantar flexion

Front 199

fibularis brevis peripheral innervation

Back 199

superficial fibular

Front 200

fibularis brevis segmental innervation

Back 200

(L4), L5, S1

Front 201

flexor digitorum brevis origin

Back 201

medial process of tuberosity of calcaneus, central part of plantar aponeurosis, and adjacent intermuscular septa

Front 202

flexor digitorum brevis insertion

Back 202

middle phalanx of 2-5th digits

Front 203

flexor digitorum brevis action

Back 203

PIP flexion and assists in flexion of 2-5th MTP

Front 204

flexor digitorum brevis peripheral innervation

Back 204

medial plantar

Front 205

flexor digitorum brevis segmental innervation

Back 205

(L4), L5, S1

Front 206

lumbricals origin

Back 206

1st from medial side of 1st FDL tendon, 2nd from adjacent sides of 1st and 2nd FDL tendons, 3rd FDL tendons, 4th from adjacent sides of 3rd and 4th FDL tendons

Front 207

lumbricals insertions

Back 207

medial side of proximal phalanx and dorsal expansion of EDL tendon of 2-5th digits

Front 208

lumbricals actions

Back 208

MTP flexion, assists in IP 2-5th extension

Front 209

lumbricals peripheral innervation

Back 209

medial plantar nerve (I), 2-4 lateral plantar nerve

Front 210

lumbricals segmental innervation

Back 210

1-(L4), L5, S1
2-4: (L4), (L5), S1, S2

Front 211

flexor hallucis brevis origin

Back 211

medial part of plantar surface of cuboid bone, adjacent part of lateral cuneiform bone, and from prolongation of tendon of posterior tibialis

Front 212

flexor hallucis brevis insertion

Back 212

medial and lateral sides of bases of proximal phalanx of great toe

Front 213

flexor hallucis brevis action

Back 213

flexion of MTP of great toe

Front 214

flexor hallucis brevis peripheral innervation

Back 214

medial plantar

Front 215

flexor hallucis brevis segmental innervation

Back 215

(L4), L5, S1

Front 216

plantaris origin

Back 216

distal part of lateral supracondylar line of femur and adjacent part of its popliteal surface, oblique popliteal ligament of knee joint

Front 217

plantaris insertion

Back 217

posterior part of calcaneus

Front 218

plantaris actions

Back 218

plantar flexion
assists in knee flexion

Front 219

plantaris peripheral innervation

Back 219

tibial nerve

Front 220

plantaris segmental innervation

Back 220

L(4), 5, S1, (S2)

Front 221

popliteus origin

Back 221

anterior part of groove on lateral condyle of femur, and oblique popliteal ligament of knee joint

Front 222

popliteus insertion

Back 222

triangular area proximal to soleal line on posterior surface of tibia, and fascia covering the muscle

Front 223

popliteus actions

Back 223

NWB: medial rotation of tibia on femur, knee flexion
WB: lateral rotation femur n tibia and knee flexion
helps reinforce posterior ligament of knee joint

Front 224

popliteus peripheral innervation

Back 224

tibial nerve

Front 225

popliteus segmental innervation

Back 225

L(4), 5, S1

Front 226

adductor hallucis origin

Back 226

oblique head: from bases of 2-4th MT bones and sheath of fibularis longus tendon
transverse head: from plantar MTP ligaments of 3-5th digits and deep transverse ligaments

Front 227

adductor hallucis insertion

Back 227

lateral side of base of proximal phalanx of great toe

Front 228

adductor hallucis actions

Back 228

adduction, assists in flexion of MTP of great toe

Front 229

adductor hallucis peripheral innervation

Back 229

lateral plantar

Front 230

adductor hallucis segmental innervation

Back 230

S1, S2

Front 231

abductor digiti minimi origin

Back 231

both processes of the calcaneal tuberosity from the plantar surface of the bone between them, from the plantar aponeurosis, a bone from the intermuscular septum between the ADM and FDB

Front 232

abductor digiti minimi insertion

Back 232

smooth groove on plantar surface of the base of 5th MT hand is attached with the FDMB to the lateral side of the base of the proximal phalanx of the 5th toe

Front 233

abductor digiti minimi action

Back 233

flexes the 5th toe
assists with abduction

Front 234

abductor digiti minimi peripheral innervation

Back 234

lateral plantar

Front 235

abductor digiti minimi segmental innervation

Back 235

S1, S2

Front 236

plantar interossei origin

Back 236

bases and medial sides of bodies of 3-5th MT bones

Front 237

plantar interossei insertion

Back 237

medial sides of bases of proximal phalanges of same digit

Front 238

plantar interossei actions

Back 238

ADducts the 3-5th digits toward axial line through the 2nd digit

Front 239

plantar interossei peripheral innervation

Back 239

lateral plantar

Front 240

plantar interossei segmental innervation

Back 240

S1, S2

Front 241

dorsal interossei origin

Back 241

each by 2 heads from adjacent sides of the MT bones

Front 242

dorsal interossei insertion

Back 242

side of proximal phalanx and capsule of 1st MTP joint to medial side of 2nd digit, other three to lateral sides of 2-4th digits

Front 243

dorsal interossei actions

Back 243

Abduct 2-4th digits from axial line through 2nd digit
assists in MTP flexion and extension of 2-4th digits

Front 244

dorsal interossei peripheral innervation

Back 244

lateral plantar

Front 245

dorsal interossei segmental innervation

Back 245

S1, S2

Front 246

flexor digiti minimi brevis origin

Back 246

medial part of the plantar surface of the base of the 5th MT bone and from the sheath of the fibularis longus

Front 247

flexor digiti minimi brevis insertion

Back 247

distal tendon with inserts into the lateral side of the base of the proximal phalanx of the minimus

Front 248

flexor digiti minimi brevis peripheral innervation

Back 248

lateral plantar

Front 249

flexor digiti minimi brevis segmental innervation

Back 249

L4, L5, S1, S2, S3

Front 250

quadratus plantae origin

Back 250

medial head: medial surface of calcaneus, and medial border of long plantar ligament
lateral head: lateral border of plantar surface of calcaneus, and lateral border of long plantar ligament

Front 251

quadratus plantae insertion

Back 251

lateral margin and dorsal and plantar surfaces of tendon of flexor digitorum longus

Front 252

quadratus plantae action

Back 252

modifies line of pull of the flexor digitorum longus tendons, and assists in flexion of 2-5th digits

Front 253

quadratus plantae peripheral innervation

Back 253

lateral plantar

Front 254

quadratus plantae segmental innervation

Back 254

S1, S2