Lower Quarter Muscles - thigh- anterior and medial compartments

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15 Terms

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Tensor Fasciae Latae

Proximal Attachment:

Anterior superior iliac spine; iliac crest

Distal Attachment

iliotibial tract, which attaches to Gerdy's tubercle

Peripheral Innervation

superior gluteal

Action

Hip abduction and IR; assist gluteus medius in maintaining level pelvis

<p><strong>Proximal Attachment:</strong></p><p>Anterior superior iliac spine; iliac crest</p><p><strong>Distal Attachment</strong></p><p>iliotibial tract, which attaches to Gerdy's tubercle</p><p><strong>Peripheral Innervation</strong></p><p>superior gluteal</p><p><strong>Action</strong></p><p>Hip abduction and IR; assist gluteus medius in maintaining level pelvis</p>

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Sartorius

Proximal Attachment:

Anterior superior iliac spine

Distal Attachment

Pes anserine (superior part of medial surface of tibia)

Peripheral Innervation

femoral

Action

Hip flexion, abduction, and ER; when knee is flexed, also knee flexion and IR via pes anserine

<p><strong>Proximal Attachment:</strong></p><p><span>Anterior superior iliac spine</span></p><p><strong>Distal Attachment</strong></p><p><span>Pes anserine (superior part of medial surface of tibia)</span></p><p><strong>Peripheral Innervation</strong></p><p><span>femoral</span></p><p><strong>Action</strong></p><p><span>Hip flexion, abduction, and ER; when knee is flexed, also knee flexion and IR via pes anserine</span></p>

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Quadriceps femoris - rectus femoris

Proximal Attachment:

Anterior inferior iliac spine

Distal Attachment

Via common tendinous (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament to tibial tuberosity

Peripheral Innervation

femoral

Segmental Innervation

L2, L3, L4

Action

Knee extension (all 4), hip flexion (rec fem only), stability to hip joint (rec fem only).

<p><strong>Proximal Attachment:</strong></p><p>Anterior inferior iliac spine</p><p><strong>Distal Attachment</strong></p><p>Via common tendinous (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament to tibial tuberosity</p><p><strong>Peripheral Innervation</strong></p><p>femoral</p><p><strong>Segmental Innervation</strong></p><p>L2, L3, L4</p><p><strong>Action</strong></p><p>Knee extension (all 4), hip flexion (rec fem only), stability to hip joint (rec fem only).</p>

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Quadriceps femoris - vastus lateralis

Proximal Attachment:

greater trochanter and lateral lip of linea aspera of femur

Distal Attachment

Via common tendinous (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament to tibial tuberosity; medial and lateral vasti also attach to tibia and patella via aponeuroses. (Medial and lateral patellar retinacula)

Peripheral Innervation

femoral

Segmental Innervation

L2, L3, L4

Action

Knee extension

<p><strong>Proximal Attachment:</strong></p><p>greater trochanter and lateral lip of linea aspera of femur</p><p><strong>Distal Attachment</strong></p><p>Via common tendinous (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament to tibial tuberosity; medial and lateral vasti also attach to tibia and patella via aponeuroses. (Medial and lateral patellar retinacula)</p><p><strong>Peripheral Innervation</strong></p><p>femoral</p><p><strong>Segmental Innervation</strong></p><p>L2, L3, L4</p><p><strong>Action</strong></p><p>Knee extension</p>

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Quadriceps femoris - vastus medialis

Proximal Attachment:

intertrochanteric line and medial lip of linea aspera of femur

Distal Attachment

Peripheral Innervation

femoral

Segmental Innervation

L2, L3, L4

Action

Knee extension

<p><strong>Proximal Attachment:</strong></p><p>intertrochanteric line and medial lip of linea aspera of femur</p><p><strong>Distal Attachment</strong></p><p>Via common tendinous (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament to tibial tuberosity; medial and lateral vasti also attach to tibia and patella via aponeuroses. (Medial and lateral patellar retinacula)</p><p><strong>Peripheral Innervation</strong></p><p>femoral</p><p><strong>Segmental Innervation</strong></p><p>L2, L3, L4</p><p><strong>Action</strong></p><p>Knee extension</p>

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Quadriceps femoris - vastus intermedias

Proximal Attachment:

anterior and lateral surfaces of shaft of femur

Distal Attachment

Via common tendinous (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament to tibial tuberosity

Peripheral Innervation

femoral

Segmental Innervation

L2, L3, L4

Action

Knee extension

<p><strong>Proximal Attachment:</strong></p><p>anterior and lateral surfaces of shaft of femur</p><p><strong>Distal Attachment</strong></p><p>Via common tendinous (quadriceps tendon) and independent attachments to base of patella; indirectly via patellar ligament to tibial tuberosity</p><p><strong>Peripheral Innervation</strong></p><p>femoral</p><p><strong>Segmental Innervation</strong></p><p>L2, L3, L4</p><p><strong>Action</strong></p><p>Knee extension</p>

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Gracilis

Proximal Attachment:

body and inferior ramus of pubis

Distal Attachment

Pes anserine (superior part of medial surface of tibia)

Peripheral Innervation

obturator

Action

Hip adduction; knee flexion and IR via pes anserine

<p><strong>Proximal Attachment:</strong></p><p>body and inferior ramus of pubis</p><p><strong>Distal Attachment</strong></p><p>Pes anserine (superior part of medial surface of tibia)</p><p><strong>Peripheral Innervation</strong></p><p>obturator </p><p><strong>Action</strong></p><p>Hip adduction; knee flexion and IR via pes anserine</p>

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Iliopsoas - Psoas Major

Proximal Attachment:

sides of T12-L5 vertebrae and discs between them. Transverse processes of L1-L5

Distal Attachment

Lesser trochanter of femur

Peripheral Innervation

Anterior rami of lumbar nerves L1-L3

Action

Hip flexion, stability to hip joint.

<p><strong>Proximal Attachment:</strong></p><p><span>sides of T12-L5 vertebrae and discs between them. Transverse processes of L1-L5</span></p><p><strong>Distal Attachment</strong></p><p><span>Lesser trochanter of femur</span></p><p><strong>Peripheral Innervation</strong></p><p><span>Anterior rami of lumbar nerves L1-L3</span></p><p><strong>Action</strong></p><p>Hip flexion, stability to hip joint.</p>

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Iliopsoas - Psoas Minor

Proximal Attachment:

Sides of T12-L1 vertebrae and intervertebral discs

Distal Attachment

Pectineal line and ilopubic eminence

Peripheral Innervation

Anterior rami of lumbar nerves L1-L2

Action

Hip flexion, stability to hip joint.

<p><strong>Proximal Attachment:</strong></p><p><span>Sides of T12-L1 vertebrae and intervertebral discs</span></p><p><strong>Distal Attachment</strong></p><p><span>Pectineal line and ilopubic eminence</span></p><p><strong>Peripheral Innervation</strong></p><p><span>Anterior rami of lumbar nerves L1-L2</span></p><p><strong>Action</strong></p><p>Hip flexion, stability to hip joint.</p>

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Iliopsoas - Illiacus

Proximal Attachment:

Iliac crest, iliac fossa, ala of sacrum, and anterior sacro-iliac igaments

Distal Attachment

Lesser trochanter of femur via tendon with psoas major

Peripheral Innervation

femoral

Segmental Innervation

L2, L3, L4

Action

Hip flexion, stability to hip joint.

<p><strong>Proximal Attachment:</strong></p><p><span>Iliac crest, iliac fossa, ala of sacrum, and anterior sacro-iliac igaments</span></p><p><strong>Distal Attachment</strong></p><p><span>Lesser trochanter of femur via tendon with psoas major</span></p><p><strong>Peripheral Innervation</strong></p><p><span>femoral</span></p><p><strong>Segmental Innervation</strong></p><p><span><strong>L2</strong>, L3, L4 </span></p><p><strong>Action</strong></p><p>Hip flexion, stability to hip joint.</p>

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Pectineus

Proximal Attachment:

Superior ramus of pubis

Distal Attachment

Pectineal line of femur, just inferior to lesser trochanter

Peripheral Innervation

femoral, accessory obturator

Action

Hip adduction and flexion, assists with hip IR

<p><strong>Proximal Attachment:</strong></p><p><span>Superior ramus of pubis</span></p><p><strong>Distal Attachment</strong></p><p><span>Pectineal line of femur, just inferior to lesser trochanter</span></p><p><strong>Peripheral Innervation</strong></p><p><span>femoral, accessory obturator</span></p><p><strong>Action</strong></p><p><span>Hip adduction and flexion, assists with hip IR</span></p>

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Adductor Longus

Proximal Attachment:

Body of pubis

Distal Attachment

Linea aspera of femur (distal to adductor brevis' attachment)

Peripheral Innervation

obturator (anterior branch)

Segmental Innervation

L2, L3, L4

Action

Hip adduction

<p><strong>Proximal Attachment:</strong></p><p><span>Body of pubis</span></p><p><strong>Distal Attachment</strong></p><p><span>Linea aspera of femur (distal to adductor brevis' attachment)</span></p><p><strong>Peripheral Innervation</strong></p><p><span>obturator (anterior branch)</span></p><p><strong>Segmental Innervation</strong></p><p><span>L2<strong>, L3</strong>, L4</span></p><p><strong>Action</strong></p><p><span>Hip adduction</span></p>

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Adductor brevis

Proximal Attachment:

body and inferior ramus of pubis

Distal Attachment

pectineal line and proximal part of linea aspera of femur

Peripheral Innervation

obturator (branch of anterior division)

Action

Hip adduction; assists with hip flexion

<p><strong>Proximal Attachment:</strong></p><p><span>body and inferior ramus of pubis</span></p><p><strong>Distal Attachment</strong></p><p><span>pectineal line and proximal part of linea aspera of femur</span></p><p><strong>Peripheral Innervation</strong></p><p><span>obturator (branch of anterior division)</span></p><p><strong>Action</strong></p><p><span>Hip adduction; assists with hip flexion</span></p>

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Adductor magnus

Proximal Attachment:

adductor part: inferior ramus of pubis, ramus of ischium
hamstrings part: ischial tuberosity

Distal Attachment

adductor part: gluteal tuberosity, linea aspera, and medial supracondylar line
Hamstring part: adductor tubercle of femur

Peripheral Innervation

Adductor part: obturator (branches of posterior division)
Hamstring part: tibial division of sciatic nerve

Action

Hip adduction;
Adductor part: Hip flexion
Hamstring part: Hip extension

<p><strong>Proximal Attachment:</strong></p><p><span><strong>adductor part:</strong> inferior ramus of pubis, ramus of ischium <br><strong>hamstrings part:</strong> ischial tuberosity</span></p><p><strong>Distal Attachment</strong></p><p><span><strong>adductor part: </strong>gluteal tuberosity, linea aspera, and medial supracondylar line<br><strong>Hamstring part: </strong>adductor tubercle of femur</span></p><p><strong>Peripheral Innervation</strong></p><p><span><strong>Adductor part</strong>: obturator (branches of posterior division)<br><strong>Hamstring part</strong>: tibial division of sciatic nerve</span></p><p><strong>Action</strong></p><p><span>Hip adduction;<br><strong>Adductor part: </strong>Hip flexion<br><strong>Hamstring part: </strong>Hip extension</span></p>

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Obturator externus

Proximal Attachment:

External margins of obturator foramen and obturator membrane

Distal Attachment

trochanteric fossa of femur

Peripheral Innervation

obturator

Action

Hip ER; stability to hip joint.

<p><strong>Proximal Attachment:</strong></p><p><span>External margins of obturator foramen and obturator membrane</span></p><p><strong>Distal Attachment</strong></p><p><span>trochanteric fossa of femur</span></p><p><strong>Peripheral Innervation</strong></p><p><span>obturator</span></p><p><strong>Action</strong></p><p><span>Hip ER; stability to hip joint.</span></p>