- For now
- Below is my personal link list of things related to the human pelvis.
- / Mats
Bones
editMajor structures
edit- Acetabulum: Acetabular notch, acetabular fossa, acetabular margin (limbus acetabuli/margo acetabularis), lunate surface
- Iliopubic eminence
- Linea terminalis: pectineal line, arcuate line (Iliopectineal line), pubic crest
- ischiopubic ramus / pubic arch
- Obturator foramen – greater sciatic foramen / greater sciatic notch – lesser sciatic foramen
- Lesser pelvis (pelvic inlet, pelvic brim, pelvic outlet), greater pelvis
Articulations and ligaments
edit- Sacroiliac joint
- Sacrococcygeal symphysis
- Posterior sacrococcygeal ligament, anterior sacrococcygeal ligament (redirs? dorsal (deep, superficial), ventral), lateral sacrococcygeal ligament, intercornual ligament, interarticular ligament (of the head of the rib) (Interarticular ligaments), Sacrococcygeal disc
- Pubic symphysis
- Sacrolumbar articulation (joint)
- Hip joint
Muscles
editEnglish Latin |
Origin | Insertion | Action |
---|---|---|---|
External oblique m. obliquus externus abdominis |
Ribs 5-12 | Iliac crest, inguinal ligament, linea alba, and rectus sheath |
Lateral flexion and rotation of the spine |
Internal oblique m. obliquus internus abdominis |
Thoracolumbar fascia, iliac crest, inguinal ligament |
Ribs 10-12, rectus sheat, conjoint tendon (falx inguinalis] | Lowers the ribs. |
Transverse abdominal m. transversus abdominis |
Deep sheath of thoracolumbar fascia, internally on ribs 7-12, iliac crest, inguinal ligament |
Rectus sheath, conjoint tendon | Compression of abdomen, expiration |
Rectus abodminis m. rectus abdominis |
Pubic crest, anterior side of pubic symphysis | Costal cartilages of ribs 5-7 | Ventral flexion of spine, muscular defense, lowering of the thorax |
Pyramidalis m. pyramidalis |
Pubic crest | Linea alba | Lateral flexion, lowering of ribs |
Quadratus lumborum m. quadratus lumborum |
Iliac crest | Transverse processes L5-1, rib 12 | As above. |
"Lumbar"
editEnglish Latin |
Origin | Insertion | Action |
---|---|---|---|
Iliopsoas m. ilipsoas | |||
Iliacus m. iliacus |
Iliac fossa | Lesser trochanter | Flexion and lateral rotation of hip joint, flexion of lumbar column |
Psoas major m. psoas major |
Intervertebral discs T12-L5 transverse processes L1-5 |
Lesser trochanter | As above. |
Psoas minor m. psoas minor |
Discs and bodies of T12-L1 | Iliopubic eminence | As above. |
"Sacral"
editEnglish Latin |
Origin | Insertion | Action |
---|---|---|---|
Erector spinae m. erector spinae |
Sacrum, Iliac crest, spinous processes of lumbar vertebrae |
Extension and balance of spine | |
Iliocostalis m. iliocostalis |
Pars lumborum: Iliac crest | Angle of ribs 5-12 | Extension and lateral flexion of spine |
Longissimus m. longissimus |
Pars thoracis: Iliac crest, spinous processes S4-L1, transverse processes T12-7 |
Transverse processes of lumbar and thoracic vertebrae, ribs 12-2 |
As above. |
English Latin |
Origin | Insertion | Action |
---|---|---|---|
Superficial muscles | |||
Ischiocavernosus m. ischiocavernosus |
Superior ischial ramus Superior pubic ramus ischial tuberosity |
Penis/clitoris | Erection of penis/clitoris |
Bulbospongiosus m. bulbospongiosus |
Central tendon of perineum | Fasciae of perineum, penis/clitoris | Compression of urethra, expulsion of semen or urine |
Superficial transverse perineus | Ischial ramus | Central tendon of perineus | Fixation of central tendon of perineus, support of pelvic floor |
Urogential diaphragm | |||
Deep transverse perineal m. transversus perinei profundus |
Ischial ramus | central tendon of perineum | fixation of central tendon of perineum, support of pelvic floor, expulsion of last drops of urine and semen in male |
External sphincter muscle of urethra (female/male) | ischial ramus, pubic rami | male: medial raphe, female: vaginal wall | Compression of urethra for inhibition of urination |
Anal triangle | |||
External anal sphincter m. sphincter ani externus |
anococcygeal raphe | Central tendon of perineum | Compression of anal canal to inhibit defecation |
Pelvic diaphragm | |||
Levator ani m. levator ani |
hip bone from pubis to ischial spine | coccyx, anal canal, anococcygeal raphe | Support of viscera, resists pressure surges in abdominal cavity, elevation of anus, formation of vaginal and anorectal sphincters |
Coccygeus m. coccygeus |
Ischial spine | lower sacrum to upper coccyx | Pulls coccyx anteriorly following defecation and childbirth, supporting and elevating pelvic floor, resists abdominal pressure surges |
From Saladin, Anatomy & Physiology: The Unity of Form and Function, p 354
See also: UAMS - Muscles of the Pelvis and Perineum - Listed Alphabetically
Gluteal
editEnglish Latin |
Origin | Insertion | Action |
---|---|---|---|
Gluteus maximus m. gluteus maximus |
posterior gluteal line, sacrotuberous and dorsal sacroiliac ligamentss, sacrum and coccyx |
Distal fibers: Gluteal tuberosity, Proximal fibers: iliotibial tract |
Extension, lateral rotation, abduction and adduction of hip joint, controls the position of the pelvis. |
Gluteus medius m. gluteus medius |
between the anterior and posterior gluteal lines | laterally on greater trochanter | Abduction, lateral and internal rotation of hip joint, controls the pelvic inclination |
Gluteus minimus m. gluteus minimus |
between the inferior and anterior gluteal lines | anterior part of greater trochanter | Abduction, internal rotation of hip joint. |
Tensor fasciae latae m. tensor fasciae latae |
Anterior superior iliac spine | iliotibial tract lateral condyle of tibia |
External rotation of hip joint. |
Small external rotators of the hip joint
editEnglish Latin |
Origin | Insertion | Action |
---|---|---|---|
Piriformis m. piriformis |
Anterior side of Sacrum | Upper edge of greater trochanter | External rotation |
Obturator internus m. obturator internus |
Medially on the inner surface of the Obturator membrane and neighbouring parts of the obturator foramen |
Medially on the greater trochanter | External rotation |
Obturator externus m. obturator externus |
External surface of the obturator membrane and neighbouring parts of the pelvis. |
Trochanteric fossa | External rotation |
Gemelli muscles mm. Gemelli |
|||
Superior gemellus m. gemellus superior |
Ischial spine | Upper edge of obturator internus tendon | External rotation |
Inferior gemellus m. gemellus inferior |
Ischial tuberosity | Lower edge of obturator internus tendon | External rotation |
Quadratus femoris m. quadratus femoris |
Lateral aspect of ischial tuberosity | Intertrochanteric crest | External rotation |
Thigh
editEnglish Latin |
Origin | Insertion | Action |
---|---|---|---|
Rectus femoris m. rectus femoris |
Anterior inferior iliac spine | Anterior sheath of the patellar ligament | Flexion of hip, extension of knee. |
Gracilis m. gracilis |
Inferior pubic ramus | Pes anserinus | Adduction and flexion of hip. |
Sartorius m. sartorius |
Anterior superior iliac spine | Pes anserinus | Flexion, external rotation of hip, flexion and internal rotation of calf |
Pectineus m. pectineus |
Pectineal line of pubis | Pectineal line | Adduction and flexion of hip |
Adductor longus m. adductor longus |
Anterior aspect of pubic bone under the pubic spine |
Medial ridge of linea aspera (femur) | Adduction and flexion of hip |
Adductor brevis m- adductor brevis |
Inferior pubic ramus | Medial ridge of linea aspera | As above. |
Adductor magnus m. adductor magnus |
inferior pubic ramus | Adductor part: Medial ridge of linea aspera, Extensor part: Adductor tubercle of femur |
As above. |
Biceps femoris m. biceps femoris |
Long head: Ischial tuberosity Short head: [[lateral ridge of linea aspera, |
Lateral intermuscular septum | Extension, adduction, and external rotation of hip, flexion and external rotation of calf. |
Semitendinosus m. semitendinosus |
Ischial tuberosity | Pes anserinus | Extension, internal rotation, and adduction of hip. Flexion, internal rotation of calf. |
Semimembranosus m. semimembranosus |
Ischial tuberosity | 1. a groove on the medial aspect of the medial condyle of femur, 2. posterior on the articular capsule, 3. Oblique popliteal ligament |
Extension and adduction of hip, flexion and internal rotation of calf. |