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Muscles & Bones Class #4 Gluteal Compartment/ Lateral Compartment: Hip Compartment: Femoral Triangle:

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Presentation on theme: "Muscles & Bones Class #4 Gluteal Compartment/ Lateral Compartment: Hip Compartment: Femoral Triangle:"— Presentation transcript:

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2 Muscles & Bones Class #4 Gluteal Compartment/ Lateral Compartment: Hip Compartment: Femoral Triangle:

3 Medial Thigh Compartment Nerve: Obturator Nerve (adductor muscles) Pes Anserinus (the proximal anteriomedial tibia) The common insertion for three thigh muscles Anterior- Sartorious Medial- Gracilis Posterior- Semitendinosus

4 Gluteal Compartment/Posterior Thigh Compartment The gluteal group: ( Gluteas= greek for rump) 1: Gluteus Maximus O: Post. Sacrum & Sup. Gluteal line of ilium I: Gluteal Tuberosity of femur; combines with tensor fasciae latae in Iliotibial band (which continues on to attach to lateral condyle of tibia) A: Ext. of hip ; lateral rot. Of hip

5 Gluteal Group Gluteus Medius O: iliac crest; between sup. And middle gluteal lines. I: (lat. Surface) greater trochanter of femur A: abduction of femur at hip medial rotation of femur at hip

6 Gluteal group Gluteus Minimus O: post. Ilium, between middle and inf. Gluteal lines I: anterior surface of greater trochanter A: abduction of femur at hip joint medial rotation of femur at hip

7 Lateral Hip Muscles Abduction of the Hip Gluteus maximus Gluteus medius Gluteus minimus TFL Sartorius

8 Lateral Thigh Tensor Fasciae Latae Tensor=one that stretches; fasciae=bands; latae=wide O: ASIS I: iliotibial band (combines with gluteus maximus) which continues on to attach to the lateral condyle of the tibia A: assists with abduction medial rotation (flexion of femur at the hip joint) (assists with ext. of leg at knee) IT band helps stabilize knee during ambulation.

9 Lateral/External Rotators of the Hip Biceps femoris Gluteus maximus Gluteus medius (post. fibers) Sartorius Piriformis Gamellus superior Obtruator internus Gamellus inferior Obtruator externus Quadratus Femoris Psoas major Iliacus

10 Lateral Thigh Deep 6 lateral rotators (pg322) “Piriformis and the GOGO Q’s” Piriformis = means pear shaped O: ant. Sacrum I: greater trochanter of femur A: lateral rotation of femur at hip joint

11 Lateral Thigh GO GO Q’s Gemellus Superior O: ischium I: greater trochanter Obturator Internus O: obturator foramen I: greater trochanter Gemellus Inferior O: ischium I: greater trochanter Obturator Externus O: obturator foramen I: trochanteric fossa Quadratus Femoris O: ischial tuberosity (lat. Border) I: intertrochanteric crest

12 Lateral Thigh Piriformis Syndrome: A condition in which the piriformis muscle tightens causing compression on the sciatic nerve, mimicking sciatica. This pain will be noticed along the posterior thigh region, and can radiate to the posterior knee.

13 Hip Flexors Psoas Major and Iliacus (Iliopsoas) Psoas major and iliacus usually referred to as “iliopsoas” because of their common insertion and action. Deep abdominal muscle- known to butcher as “tenderloin” or “filet mignon” O: psoas-lumbar vertebrae T12-L5 Iliacus- iliac fossa I: lessor trochanter of femur A: Flex. And Lat. Rot. Of femur at hip joint if thigh is fixed, flex. Of trunk at hip joint.

14 Bones of the foot pg 83 Calcaneus Talus Navicular Cuboid Cuneiform I, II, III Metatarsals 1-5 (medial to lateral) Phalanges: proximal, middle, distal (great toe has no middle, only proximal and distal. Tarsals: calcaneus, talus, navicular, cuboid, cuneiform I,II,III

15 Anterior Leg Muscles Dorsiflexion of the Foot Tibialis ant. Extensor digitorum longus Extensor hallicus longus

16 Anterior Leg Muscles Tibialis anterior O: lateral shaft of tibia (lat. Condyle, interossous membrane) I: base of 1 st metatarsal (plantar surface) base of 1 st cuneiform (plantar surface) A: dorsiflexion of foot at ankle joint inversion (of foot at tarsal joints)

17 Ant. Leg muscles Extensor digitorum longus O: lat. Condyle of tibia, proximal ant. Shaft of fibula I: middle and distal phalanges of 4 lat. Toes (front of leg to phalanges) A: ext. of 4 lat. Toes assists dorsiflexion of ankle

18 Ant. Leg muscles Extensor hallucis longus O: middle ant. Shaft of fibula, interosseous membrane I: base of distal phalanx of great toe (front of leg to great toe) A: ext. of great toe assists dorsiflexion of ankle

19 Ant. Leg muscles Peroneus Tertius O: ant. Distal fibula (with extensor Digitorum longus) I: base of 5 th metatarsal A: eversion of foot assists dorsiflexion

20 Lateral Leg Muscles Eversion of the Foot Peroneus longus Peroneus brevis Extensor digitorum longus

21 Lateral leg muscles Peroneus Longus O: head of proximal lateral shaft of fibula I: base of 1 st metatarsal (lat. Side); plantar surface of 1 st cuneiform A: eversion of foot at tarsal joints assists plantar flexion of ankle Peroneus longus and Tibialis anterior meet up at insertion points– forms a stirrup for the foot.

22 Lat. Leg muscles Peroneus Brevis O: lat. Shaft of fibula (distal 2/3) I: base of 5 th metatarsal A: eversion of foot assists plantar flexion of ankle

23 Posterior Leg Muscles Plantarflexion of the Foot Gastroncnemius Soleus Tibialis post. Peroneus longus (assists) Peroneus brevis (assists) Flexor digitorum longus Flexor hallicus longus Plantaris

24 Posterior Leg Muscles Gastrocnemius O: med. And lat. Condyles of femur I: calcaneus via achilles tendon A: plantar flexion of foot at ankle joint Can act on knee or ankle, but not simultaneously

25 Post. Leg muscles Soleus Soleus is latin for sole, a flat fish…it’s a flat broad muscle. O: soleal line of tibia, post. Head and upper shaft of fibula I: calcaneus via achilles tendon A: plantar flexion of foot at ankle joint Soleus is the strongest plantar flexor

26 Post. Leg muscles Gastronemius and soleus together form the “triceps surae” Plantaris O: lateral epicondyle of femur I: calcaneus via achilles tendon A: assists plantar flexion of foot at ankle

27 Post. Leg muscles Popliteus Initiates knee flexion by medial rotation of tibia to “unlock” the extended knee “the key that unlocks the knee” Tibialis Posterior O: post. Tibia, post. Fibula, interosseous membran. I: navicular and adjacent metatarsals on plantar surface (back of leg to navicular & metatarsals) A: inversion of foot assists plantarflexion of ankle

28 Post. Leg muscles Flexor Digitorum longus O: post. Tibia I: distal phalanges of 4 lat. Toes on plantar surface (back of leg to 4 lat. Toes) A: flexion of 4 lat. Toes assists plantar flexion of ankle

29 Post. Leg muscles Flexor Hallucis longus O: post. Fibula I: distal phalanx of great toe (plantar surface) (back of leg to great toe) A: flexion of great toe, assists plantarflexion of ankle

30 Post. Leg muscles “Tom, Dick and Harry” Tibialis posterior Flexor Digitorum longus Flexor Hallucis longus deep post. Calf muscles whose tendons go around medial malleolus in this order of ant. Superficial to post. Deep.


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