U3LLCB Gluteal and Thigh Muscles.pptx

Concept B: Muscles of the Gluteus & Thigh  Outline  Muscles of Gluteal Region/ Compartment  Thigh Muscles  Anterior Compartment  Medial Compartment  Posterior Compartment  Summary of Actions at Hip & Knee Joints  Muscles of Gluteal Region/Compartment  Gluteal Musc...

Concept B: Muscles of the Gluteus & Thigh  Outline  Muscles of Gluteal Region/ Compartment  Thigh Muscles  Anterior Compartment  Medial Compartment  Posterior Compartment  Summary of Actions at Hip & Knee Joints  Muscles of Gluteal Region/Compartment  Gluteal Muscles Muscles of the Gluteal Region Gluteus Maximus m. Gluteus Medius m. Gluteus Minimus m. Piriformis m. Tensor of Fascia Lata m.  Gluteal Muscles Gluteal muscles 2 2 Attach from Hip Significant actions on 5 bone to femur (or Femur at the Hip 1 connective tissue Joint 1 of thigh) 2 1 3 4 Later Posteri Posteri al or or  Gluteal Muscles  Gluteus Maximus m.: Medius P: Ilium, Sacrum, Coccyx D: Iliotibial Tract & Femur Actions on Femur: Maximus Extension @ Hip Assists with Lateral Rotation @ Hip Iliotibial Tract  Gluteus Medius m.: P: Ilium D: Femur (Greater Trochanter) Actions on Femur: Abduct @ Hip Stabilize the Hip Later Poster Joint/Pelvis when al ior contralateral leg is raised  Gluteal Muscles Maximus (cut) Medius (cut)  Gluteus Minimus m.: P: Ilium D: Femur (Greater Minimus Trochanter) Actions on Femur: Same as Gluteus Medius  Piriformis m.: P: Sacrum D: Femur (Greater Trochanter) Piriformis Actions on Femur: Lateral Rotation @ Hip Poster ior  Gluteal Muscles  Tensor of Fascia Lata m.: Tensor P: Ilium (Near ASIS) D: Iliotibial Tract Actions @ hip: Abduction Flexion Stabilize when standing Iliotibial Tract Poster ior  Checkpoint #1: Identify #5 ? ? #1 ? ? #2 ? ? #6 ? ? #3 ? ? #4 ? ? Thigh Muscles  Thigh Muscles: 3 Compartments Anterior compartment of thigh 3 Compartments defined by: Fascia Lata surrounding Anterior Thigh Muscles Fascia Lata surrounding Medial Thigh Muscles Anterior Fascia Lata surrounding Posterior Thigh Muscles Medial compartment of thigh Posterior Lateral Medial compartment of thigh Posterior Muscles of Anterior Thigh (6)  Anterior Thigh Muscles Psoas Major  Iliopsoas m.: P: Lumbar Vertebrae (Psoas Iliacus Inguinal Major) Ligament P: Ilium (Iliac Crest & Fossa) (Iliacus) Iliopsoas D: Femur (Lesser Trochanter) Actions on Femur: Primary Flexor @ Hip Sartorius  Sartorius m.: P: Ilium (ASIS) D: Tibia Actions @ Hip: Flexion Actions @ Knee: Flexion Anter ior  Anterior Thigh Muscles Quadriceps Femoris Muscles:  Rectus Femoris m.: P: Ilium (AIIS) D: Patella/ Tibial Tuberosity Actions @ Hip: Assists in flexion (maintain flexion) Actions on Patella/Tibia: Rectus Extends Leg @ Knee Femoris  Vastus Lateralis m.  Vastus Medialis m. Patella  Vastus Intermedius m. Anter ior  Anterior Thigh Muscles Quadriceps Femoris Muscles:  Rectus Femoris m.  Vastus Lateralis m.: P: Femur (Greater Trochanter & Linea Aspera) D: Patella/ Tibial Tuberosity Actions on Tibia: Extension @ Knee Vastus Lateralis  Vastus Medialis m.  Vastus Intermedius m. Patella Anter ior  Anterior Thigh Muscles Quadriceps Femoris Muscles:  Rectus Femoris m.  Vastus Lateralis m.  Vastus Medialis m.: P: Femur (Linea Aspera) D: Patella/ Tibial Tuberosity Actions on Tibia: Extension @ Knee Vastus Medialis  Vastus Intermedius m. Patella Anter ior  Anterior Thigh Muscles Quadriceps Femoris Muscles:  Rectus Femoris m.  Vastus Lateralis m.  Vastus Medialis m.  Vastus Intermedius m.: P: Femur (anterior surface) D: Patella/ Tibial Tuberosity Vastus Actions on Tibia: RF Extension @ Knee Intermedius Patella Anter ior Muscles of Medial Thigh (5)  Medial Thigh Muscles (The Layer 1: Adductors)  Gracilis m.: P: Pubis D: Tibia Actions @ Hip: Adduction Actions @ Knee: Flexion  Adductor Longus m.  Pectineus m. “G” Anter ior  Medial Thigh Muscles (The Layer 1: Adductors)  Gracilis m.  Adductor Longus m.: P: Pubis D: Femur (Linea Aspera) Actions on femur: Adduction @ hip  Pectineus m. “A” “G” Anter ior  Medial Thigh Muscles (The Layer 1: Adductors)  Gracilis m.  Adductor Longus m.  Pectineus m.: P: Pubis D: Femur Actions on femur: Adduction @ hip “P” Assists in flexion @ hip “A” “G” Anter ior  Medial Thigh Muscles (The Layer 2: Adductors)  Adductor Brevis m.: P: Pubis D: Femur (Linea Aspera) Actions on femur: Adduction @ hip  Adductor Magnus m. Adductor Brevis Anter ior  Medial Thigh Muscles (The Layer 2: Adductors)  Adductor Brevis m.  Adductor Magnus m.: ---Adductor Component: P: Pubis & Ischium D: Femur (Linea Aspera) Actions on femur: Adduction @ hip Adductor Magnus ---Hamstring Component: P: Ischium (Ischial Tuberosity) D: Femur (Adductor Tubercle Adductor on Medial Epicondyle) Hiatus Actions on femur: Extension @ hip Anter Poster ior ior Muscles of Posterior Thigh (4)  Posterior Thigh Muscles (The Pectoralis Major  Semitendinosus m. &Hamstrings) Semimembranosus m.: P: Ischium (Ischial Tuberosity) D: Tibia Actions @ hip: Extension Actions @ Knee: Flexion  Biceps Femoris m. ---Long Head ---Short Head Semimembranosus Sm Semitendinosus St  Posterior Thigh Muscles (The  Semitendinosus m. & Hamstrings) Semimembranosus m.:  Biceps Femoris m.: ---Long Head P: Ischium (Ischial Tuberosity) D: Fibula Actions @ hip: Extension Long Actions @ Knee: Hd. Flexion ---Short Head Short P: Femur (Linea Aspera) Hd. D: Fibula Actions @ Knee: Flexion  Checkpoint #2: Identify Anterior & Medial Focal Points for Anterior Thigh: Muscles Focal Point for Medial Thigh: Rectus femoris (Straight “G.A.P.” over femur) Gracilis, Adductor “I-S” Longus, & Iliopsoas #2 ? ? Pectineus Sartorius #5 Which 2nd layer adductor can be found here? ? #3 ? ? #5 ? ? #4 ? ? #1 ? ? Quadriceps Tendon Patella Patella Poster ior  Checkpoint #3: Identify Hamstring Muscles Focal Points for Posterior Thigh: Semi’s “drive” (proceed) medially 2 Head of Biceps are lateral #2 ? ? #2 ? ? #1 ? ? #1 ? ? Poster ior Checkpoint #4: Identify Hamstring Muscles Focal Points for Posterior Thigh: Semi’s “drive” (proceed) medially 2 Head of Biceps are lateral #1 ? ? #2 ? ? Poster ior Common tendon attaching to fibula  Muscles acting at the Hip Joint Muscles are ordered relative to contribution: Bolded (and outlined) are the primary sources of that action Muscles Acting at the Knee Joint Elbo w