Iliopsoas

Quadriceps Femoris (Vastus lateralis, Vastus intermedius, vastus medialis) 

Sartorius

Pectineus

Flexion of Thigh at hip

Extension of leg at knee

1) Adductor Brevis

2) Adductor Longus

3) Adductor Magnus

4) Gracilis

Obturator Nerve

(Adductor magnus also has partial innervation from tibial division of sciatic nerve)

Hamstrings:

1) Semitendinosus

2) semimembranosus

3) Biceps Femoris (Long and Short Heads)

Extension of thigh at hip (except short head of Bi. femoris)

Flexion of leg at knee

Sciatic nerve innervates all except Biceps femoris

Biceps femoris is innervated by common fibular (peroneal)

1) Tibialis anterior

2) Extensor Hallicus Longus

3) Extensor Digitorum Longus

4) Fibularis (peroneous) tertius

1) Dorsiflexion of ankle (all)

2) Extension of toes (extensors)

3) Inversion of foot (tibialis anterior)

1) Plantaris

2) Gastrocnemius

3) Soleus

1) Popliteus

2) Tibialis Posterior

3) flexor Hallicus longus

4) Flexor Digitorum longus

1) Plantarflexion of ankle (all except popliteus)

2) Flexion of toes (flexors)

3) Inversion of foot (Tibialis Posterior)

Fibularis (peroneus) longus

Fibularis (peroneus) brevis

Eversion of the foot (primary)

Plantarflex the foot

The anterior superior iliac spine (ASIS)

is a prominent, often visible, easily palpable landmark on the anterior hip. 

What attaches here?

1) Inguinal ligament

2) tensor Fascia Lata muscle

3) sartorius muscle

Marks the widest point of the iliac crest

Located at vertebral level L5 (transtubercular plane)

Palpable 5-6 cm posterior and slightly superior to the ASIS

Allows for weight bearing when seated

Palpable in inferior buttock when thigh is flexed, but coveried by gluteus maximus when thigh is extended

Posterior thigh muscles

Adductor Magnus

sacrotuberous ligament

1) Large Laterally placed boney bony feature

  palpable in upper lateral thigh about 10 cm inf. to iliac crest.

the lateral rotators and abductors (gluteus medius and minimus) of the hip attach here as well.

Located on posteromedial aspect fo proximal shaft of femur.

Iliopsoas muscle attaches here

On the femur,  a vertically oriented ridge of bone along the post. femoral shaft; gives the shaft a triangular cross section

also serves as attachement for adductor muscles

This is a sesamoid bone formed within the quadriceps tendon.

The base is the superior portion and is kinda like an inverted triangle. 

The inferior pole forms a blunt attachment point for the patellar ligament (which is an inferior extension of the quadriceps)

Thick horizontal discs of bone that form the upper part of the tibia

Palpable anteriorly alongside the patellar ligament, especially when the knee if flexed

Flat superior surface of the tibia

Consists of the articular surfaces of the right and left condyles plus the intercondylar region, which lies b/t the articular surfaces

Raised area within the intercondylar region that forms 2 bony projections (intercondylar tubercles)

Fits into the intercondylar fossa (notch) of the femur

On the tibia:

An easily palpable bump on the proximal anterior shaft. 

Quadriceps muscle attaches here via patellar ligament.

On the Tibia-

An easily palpable and visible prominence on medial side of ankle

1) Achilles tendon (common tendon of the soleus, gastrocnemius, and plantaris muscles)

2) Plantar aponeurosis

3) several intrinsis foot muscles

4) numerous ligaments of foot

Damage to femoral nerve

leads to or affects which motor/sensory deficits?

Hip Flexion

Knee extension

Numbness of anterior thigh, anteromedial leg, and medial foot.

Damage to Obturator Nerve

leads to or affects which motor/sensory deficits?

Hip adduction

Numbness of medial thigh

Damage to sciatic Nerve

leads to or affects which motor/sensory deficits?

Hip Extension

Knee Flexion

Loss or weakness of all motor function below knee

Numbness of posterior and lateral leg, and most of foot (except medial side)

Damage to Tibial Nerve

leads to or affects which motor/sensory deficits?

Plantarflexion of ankle

Inversion of foot (weak Tibialis posterior muscle)

Flexion of toes

Numbness of post. leg and plantar surface of foot.

Damage to Common Fibular Nerve

leads to or affects which motor/sensory deficits?

Dorsiflexion of ankle

Eversion of foot

Extension of Toes

Numbness of 1st lateral leg and dorsum of foot

Damage to Superficial Fibular Nerve

leads to or affects which motor/sensory deficits?

Eversion of foot

Numbness on inferolateral leg and dorsum of foot.

Sensory Distribution of nerves:

Lateral Thigh

Sensory Distribution of nerves:

Medial Thigh

Sensory Distribution of nerves:

Ant. Thigh

Sensory Distribution of nerves:

Post. Thigh

Sensory Distribution of nerves:

Lateral Leg

Sensory Distribution of nerves:

Medial and Anterior Leg

Sensory Distribution of nerves:

Posterior Leg

Sensory Distribution of nerves:

Dorsum of the foot

Sensory Distribution of nerves:

Plantar foot

Sensory Distribution of nerves:

1st interdigital cleft

Sensory Distribution of nerves:

Medial Foot

Sensory Distribution of nerves:

Lateral Foot

Dermatomes

L4

L5

S1

L4= Medial surface of the foot

L5=Dorsal surface of foot

S1=Lateral surface of foot.