Pelvis: Difference between revisions

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<div class="editorbox"> '''Original Editor '''- [[User:Rachael Lowe|Rachael Lowe]]  '''Top Contributors''' - {{Special:Contributors/{{FULLPAGENAME}}}}</div>
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== Description ==
== Description ==
[[File:Gray241.png|alt=Bones of the pelvis|thumb|280x280px]]The pelvis consists of the sacrum, the coccyx, the ischium, the ilium, and the pubis.<ref name=":1">White TD, Black MT, Folkens PA. [https://books.google.co.za/books?hl=en&lr=&id=oCSG2mYlD90C&oi=fnd&pg=PP1&dq=+.+Human+osteology.+&ots=VnpEcJPCWD&sig=Ful9Jtenlzzw4M4nniLS00LstnM#v=onepage&q=.%20Human%20osteology.&f=false Human osteology.] Academic press; 2011.</ref><ref name=":0">Lewis CL, Laudicina NM, Khuu A, Loverro KL. [https://anatomypubs.onlinelibrary.wiley.com/doi/pdf/10.1002/ar.23552 The human pelvis: Variation in structure and function during gait.] The Anatomical Record 2017;300(4):633-42.</ref> The structure of the pelvis supports the contents of the abdomen while also helping to transfer the weight from the spine to the lower limbs.<ref name=":2">Magee DJ. [https://books.google.co.za/books?hl=en&lr=&id=cxu0BQAAQBAJ&oi=fnd&pg=PP1&dq=Orthopedic+physical+assessment.&ots=mqGLvPFASn&sig=Jf3KLqp1lfiYQYoeVU2fMhEhhvs#v=onepage&q=Orthopedic%20physical%20assessment.&f=false Orthopedic physical assessment.] Elsevier Health Sciences; 2013.</ref> During [[gait]], the joints within the pelvis work together to decrease the amount of force transferred from the ground and lower extremities to the spine and upper extremities.<ref name=":2" />  
[[File:Gray241.png|alt=Bones of the pelvis|260x260px|right|frameless]]The pelvis consists of the [[sacrum]], the [[Coccyx Fractures|coccyx]], the [[ischium]], the [[ilium]], and the pubis.<ref name=":1">White TD, Black MT, Folkens PA. [https://books.google.co.za/books?hl=en&lr=&id=oCSG2mYlD90C&oi=fnd&pg=PP1&dq=+.+Human+osteology.+&ots=VnpEcJPCWD&sig=Ful9Jtenlzzw4M4nniLS00LstnM#v=onepage&q=.%20Human%20osteology.&f=false Human osteology.] Academic press; 2011.</ref><ref name=":0">Lewis CL, Laudicina NM, Khuu A, Loverro KL. [https://anatomypubs.onlinelibrary.wiley.com/doi/pdf/10.1002/ar.23552 The human pelvis: Variation in structure and function during gait.] The Anatomical Record 2017;300(4):633-42.</ref> The structure of the pelvis supports the contents of the abdomen while also helping to transfer the weight from the spine to the lower limbs.<ref name=":2">Magee DJ. [https://books.google.co.za/books?hl=en&lr=&id=cxu0BQAAQBAJ&oi=fnd&pg=PP1&dq=Orthopedic+physical+assessment.&ots=mqGLvPFASn&sig=Jf3KLqp1lfiYQYoeVU2fMhEhhvs#v=onepage&q=Orthopedic%20physical%20assessment.&f=false Orthopedic physical assessment.] Elsevier Health Sciences; 2013.</ref> During [[gait]], the joints within the pelvis work together to decrease the amount of force transferred from the ground and lower extremities to the spine and upper extremities.<ref name=":2" />  
   
   
== Osteology  ==
== Bony Pelvis ==
[[File:Innominate bone.jpg|thumb|349x349px]]
[[File:Pelvis landmarks.jpeg|right|frameless|399x399px]]
* Sacrum
Until puberty, each hip [[bone]] consists of three separate bones yet to be fused: ilium, ischium and pubis connected by the tri-radiate cartilage.
* Coccyx
 
* Two innominate bones, which consist of the:
The two hip bones are joined anteriorly at the pubic symphysis and posteriorly to the sacrum at the sacroiliac joint. The hip bones incorporate the acetabulum, which articulates with the proximal [[femur]] at the hip joint<ref>Radiopedia [https://radiopaedia.org/articles/pelvis-1 Pelvis] Available: https://radiopaedia.org/articles/pelvis-1<nowiki/>(accessed 6.11.2021)</ref>.
** Ischium
 
** Ilium
* In addition to carrying upper body weight, this multi-surfaced pelvic ring can transfer upper body weight to the lower limbs and act as attachment points for lower limb and trunk muscles. 
** Pubis<ref name=":1" />
* Furthermore, the bony pelvis protects the pelvic and abdomino-pelvic viscera<ref name=":6">Chaudhry SR, Hulaibi FA, Nahian A, Chaudhry K. [https://www.ncbi.nlm.nih.gov/books/NBK482258/ Anatomy, Abdomen and Pelvis, Pelvis]. StatPearls [Internet]. 2020 May 24.Available: https://www.ncbi.nlm.nih.gov/books/NBK482258/<nowiki/>(accessed 6.11.2021)</ref>.
{{#ev:youtube|3v5AsAESg1Q|300}}<ref>Anatomy Zone. Bones of the Pelvis. Available from: https://youtu.be/3v5AsAESg1Q [last accessed 27/01/2020]</ref>
=== Joint Articulations ===
=== Joint Articulations ===
There are three articulations within the pelvis:
[[File:Ligaments of the pelvis anterior aspect Primal.png|right|frameless|399x399px]]
* Inferiorly between the sacrum and the coccyx
The pelvic bones make 4 pelvic joints.
* Posteriorly between the sacrum and each ilium ([[Sacroiliac Joint|sacroiliac (SI) joint]])
* Anteriorly between the pubic bodies (pubic symphysis).<ref name=":0" />
'''Other articulations:'''


The pelvis and [[femur]] articulate via the acetabulum<ref name=":1" />  
* One sacrococcygeal joint posteriorly, a hinge joint between the sacrum and the coccyx.
=== Ligaments ===
* 2 [[Sacroiliac Joint|sacroiliac joint]]<nowiki/>s with the sacrum, the strongest joints in the body.
[[File:Bony-pelvis-2.jpg|thumb|420x420px]]
* 1 symphysis pubis anteriorly, a cartilaginous joint with cartilage in between.


====Ligaments of the Pelvis====
Other articulation: The pelvis and [[femur]] articulate via the acetabulum, at the [[Hip Anatomy|hip]] joint.<ref name=":1" />
* Iliolumbar ligament
==Ligaments of the Pelvis==
* Lateral lumbosacral ligament
[[File:Bony-pelvis-2.jpg|420x420px|alt=|right|frameless]]The bony pelvis is held together with the support of the 3 vertebro-pelvic ligaments.
* Sacrotuberous ligament
* Sacrospinous ligament
====Sacroiliac Ligaments====
* Ventral/Anterior sacroiliac ligament
* Dorsal/Posterior sacroiliac ligament
* Interosseous sacroiliac ligament


====Sacrococcygeal Ligaments====
# [[Iliolumbar ligament]]
* Ventral/Anterio sacrococcygeal ligament  
# [[Sacrospinous Ligament|Sacrospinous ligament]]
* Dorsal sacrococcygeal ligament
# [[Sacrotuberous Ligament|Sacrotuberous ligament]]
* Lateral sacrococcygeal ligament  


====Pubic Symphysis Ligaments====
 
* Superior pubic ligament  
Other ligaments attached to bony pelvis include the sacrococcygeal ligaments, [[Pubic Symphysis Dysfunction|pubic symphysis]] ligaments, and endopelvic fascia ligament.
* Inferior pubic ligament
 
* Anterior pubic ligament
Additional ligaments may be found in the [[The Uterine And Cervical Ligaments|female pelvis]]. These ligaments of the female reproductive system support the internal female genitalia in the female pelvis. See [[The Uterine And Cervical Ligaments]]
* Posterior pubic ligament


=== Muscles ===
=== Muscles ===
There are 36 muscles that attach to the sacrum or innominates. The purpose of these muscles is primarily to provide stability to the joint not to produce movement.<ref>Calvillo O, Skaribas I, Turnipseed J. [https://link.springer.com/article/10.1007/s11916-000-0019-1 Anatomy and pathophysiology of the sacroiliac joint.] Current review of pain 2000;4(5):356-61.</ref>
There are 36 muscles that attach to the sacrum or hip bone (innominates). The purpose of these muscles is primarily to provide stability to the joint not to produce movement.<ref>Calvillo O, Skaribas I, Turnipseed J. [https://link.springer.com/article/10.1007/s11916-000-0019-1 Anatomy and pathophysiology of the sacroiliac joint.] Current review of pain 2000;4(5):356-61.</ref>


[[Muscle|Muscles]] that attach to the sacrum or innominates are:
[[Muscle|Muscles]] that attach to the sacrum or innominates are:
{| class="wikitable" style="text-align: center;"
{| class="wikitable" style="text-align: center;"
|[[Adductor Brevis|Adductor brevis]]
|[[Adductor Brevis|Adductor brevis]]
|Adductor longus
|[[Adductor Longus|Adductor longus]]
|[[Adductor Magnus|Adductor magnus]]
|[[Adductor Magnus|Adductor magnus]]
|[[Biceps Femoris|Biceps femoris - long head]]
|[[Biceps Femoris|Biceps femoris - long head]]
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|-
|-
|[[Pelvic Floor Anatomy|Levator ani]]
|[[Pelvic Floor Anatomy|Levator ani]]
|Multifidus
|[[Lumbar Multifidus|Multifidus]]
|[[Obturator Internus|Obturator internus]]
|[[Obturator Internus|Obturator internus]]
|[[Obturator Externus|Obturator externus]]
|[[Obturator Externus|Obturator externus]]
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|[[Piriformis]]
|[[Piriformis]]
|[[Psoas Minor|Psoas minor]]
|[[Psoas Minor|Psoas minor]]
|[[Pyramidalis muscle|Pyramidalis]]
|[[Pyramidalis Muscle|Pyramidalis]]
|[[Quadratus Femoris|Quadratus femoris]]
|[[Quadratus Femoris|Quadratus femoris]]
|-
|-
Line 102: Line 87:
|}
|}


== Sex-specific differences ==
== The Pelvic Cavity ==
The female pelvis consists of a wider sacrum and a wider subpubic angle when compared to males. The female pelvis’ ischial spines are also less prominent than the male’s ischial spines.<ref name=":3">Kurki HK. [https://www.sciencedirect.com/science/article/abs/pii/S0047248411001679 Pelvic dimorphism in relation to body size and body size dimorphism in humans.] Journal of Human Evolution 2011;61(6):631-43.</ref><ref name=":4">Meindl RS, Lovejoy CO, Mensforth RP, Carlos LD. [https://s3.amazonaws.com/academia.edu.documents/48786250/Accuracy_and_Direction_of_Error_in_the_S20160912-8250-ox8gbo.pdf?response-content-disposition=inline%3B%20filename%3DAccuracy_and_direction_of_error_in_the_s.pdf&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-A Accuracy and direction of error in the sexing of the skeleton: implications for paleodemography.] American Journal of Physical Anthropology 1985;68(1):79-85.</ref><ref name=":5">Tague RG. [https://onlinelibrary.wiley.com/doi/abs/10.1002/ajpa.1330880102 Sexual dimorphism in the human bony pelvis, with a consideration of the Neandertal pelvis from Kebara Cave, Israel.] American Journal of Physical Anthropology 1992;88(1):1-21.</ref> The male pelvis’ sacrum is generally longer and more curved with a narrower sub-pubic arch.<ref name=":5" /> In females a wider pelvic aperture is needed as it functions as the birth canal during labour.<ref name=":3" /><ref name=":4" /><ref>Rosenberg KR. [https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajpa.1330350605 The evolution of modern human childbirth.] American Journal of Physical Anthropology.1992;35(S15):89-124.</ref><ref>Lovejoy CO. [https://www.researchgate.net/profile/Owen_Lovejoy/publication/51367382_The_natural_history_of_human_gait_and_posture_Part_2_Hip_and_thigh/links/5cd6ee9592851c4eab969302/The-natural-history-of-human-gait-and-posture-Part-2-Hip-and-thigh.pdf The natural history of human gait and posture: part 2. Hip and thigh.] Gait & posture 2005;21(1):113-24.</ref><ref>Abitbol MM. [https://europepmc.org/article/med/8728076 The shapes of the female pelvis. Contributing factors.] The Journal of reproductive medicine 1996;41(4):242-50.</ref>
[[File:Body Cavities Frontal view labeled.jpeg|right|frameless]]
The space inside the pelvic bones is called the pelvic cavity.  


== Clinical Examination  ==
# Superiorly, the pelvic cavity is continuous with the abdominal cavity.
# Inferiorly, the pelvic cavity is bounded by the Pelvic floor.
'''Image''': The various cavities of the human body as seen in a frontal projection, with the pelvic cavity labeled '''4'''.


=== Assessment ===
The pelvic cavity is divided into two parts:
Prior to the assessment of the sacroiliac joint both the [[Lumbar Examination|lumbar spine]] and [[Hip Anatomy|hip]] should be assessed and any underlying pathologist should be ruled out.


=== Special Tests ===
# The greater pelvis is part of the abdomen, so it is also referred to as the false pelvis.
# The lesser pelvis is part of the pelvis, so it is also called the true pelvis.


==== SI Joint stress tests ====
The pelvic cavity functions as housing space for the urinary bladder, the pelvic colon, internal reproductive organs, and rectum. The pelvic cavity additionally houses other internal structures and tissues including muscles, arteries, veins, nerves, and the pelvic connective tissue.<ref name=":6" />
* Anterior gapping test
* [[Sacroiliac Distraction Test|Sacroiliac distraction test]]
* Sacrotuberous ligament stress test
* Sacral compression test
* Rotational stress test


==== [[Leg Length Discrepancy|Leg Length tests]] ====
== Pelvic Floor ==
* Prone test
[[File:Pelvic floor.png|right|frameless]]
* Standing leg length test
The [[Pelvic Floor|pelvic floor]] is the inferior muscular layer of the true pelvic cavity. It separates the pelvic cavity superiorly from the perineum which lies inferior to the pelvic floor. It functions as a boundary of the pelvis and abdominal cavity while supporting the weight of the visceral organs<ref name=":6" />.
* Functional leg length test


==== Other Special Tests ====
'''Image''': The pelvic floor.
* Seated Flexion test (Piedallu's Sign)
* [[Supine Long Sitting Test|Supine long sitting test]]
* [[Sign of the Buttock|Sign of the buttock]]
* [[Posterior pelvic pain provocation test (aka Thigh Thrust aka Posterior Shear)|Posterior pelvic pain provocation test]]
* [[Gaenslen Test|Gaenslen test]]
* Yeoman's test
* [[FABER Test|FABER (Figure-Four) test]]
* Fortin Finger Test
* [[Straight Leg Raise Test|Straight leg raise]]
* [[Stork Test|Gillet's test (Stork test)]]


=== Outcome Measures ===
== Sex-specific differences ==
* [[Pelvic Girdle Questionnaire (PGQ)]]
The female pelvis consists of a wider sacrum and a wider subpubic angle when compared to males. The female pelvis’ ischial spines are also less prominent than the male’s ischial spines.<ref name=":3">Kurki HK. [https://www.sciencedirect.com/science/article/abs/pii/S0047248411001679 Pelvic dimorphism in relation to body size and body size dimorphism in humans.] Journal of Human Evolution 2011;61(6):631-43.</ref><ref name=":4">Meindl RS, Lovejoy CO, Mensforth RP, Carlos LD. [https://s3.amazonaws.com/academia.edu.documents/48786250/Accuracy_and_Direction_of_Error_in_the_S20160912-8250-ox8gbo.pdf?response-content-disposition=inline%3B%20filename%3DAccuracy_and_direction_of_error_in_the_s.pdf&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-A Accuracy and direction of error in the sexing of the skeleton: implications for paleodemography.] American Journal of Physical Anthropology 1985;68(1):79-85.</ref><ref name=":5">Tague RG. [https://onlinelibrary.wiley.com/doi/abs/10.1002/ajpa.1330880102 Sexual dimorphism in the human bony pelvis, with a consideration of the Neandertal pelvis from Kebara Cave, Israel.] American Journal of Physical Anthropology 1992;88(1):1-21.</ref> The male pelvis’ sacrum is generally longer and more curved with a narrower sub-pubic arch.<ref name=":5" /> In females a wider pelvic aperture is needed as it functions as the birth canal during labour.<ref name=":3" /><ref name=":4" /><ref>Rosenberg KR. [https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajpa.1330350605 The evolution of modern human childbirth.] American Journal of Physical Anthropology.1992;35(S15):89-124.</ref><ref>Lovejoy CO. [https://www.researchgate.net/profile/Owen_Lovejoy/publication/51367382_The_natural_history_of_human_gait_and_posture_Part_2_Hip_and_thigh/links/5cd6ee9592851c4eab969302/The-natural-history-of-human-gait-and-posture-Part-2-Hip-and-thigh.pdf The natural history of human gait and posture: part 2. Hip and thigh.] Gait & posture 2005;21(1):113-24.</ref><ref>Abitbol MM. [https://europepmc.org/article/med/8728076 The shapes of the female pelvis. Contributing factors.] The Journal of reproductive medicine 1996;41(4):242-50.</ref>


== Pathology/Injury  ==
== Associated Conditions ==
The pelvis is of great clinical significance as many issues or disorders can occur<ref name=":6" /> eg


*[[Pubic Symphysis Dysfunction|Pubic symphysis dysfunction]]  
* [[Pelvic Fractures|Pelvic fracture]]
*[[Spondyloarthritis]]  
* [[Pelvic Inflammatory Disease|Pelvic inflammatory disease]]
*[[Pregnancy Related Pelvic Pain|Pregnancy related pelvic pain]]
* [[Pelvic Congestion Syndrome|Pelvic congestion syndrome]]
*[[Pelvic Fractures|Pelvic fractures]]
* Pelvic [[endometriosis]] is a condition in which endometrial tissue starts growing exterior to the uterus within the pelvis.
* The coccyx may give rise to different painful conditions in humans. eg [[Coccygodynia|Coccydynia]] is an inflammatory condition of the coccyx. Traumatic events such as sudden falls and childbirth pressure may cause subluxation or fracturing of the sacrococcygeal joint leading to Coccydynia.
* Pelvic floor dysfunction and muscle weakness may lead to the many conditions see [[Pelvic Floor Disorders]]
* [[Ischial Bursitis]]
* [[Pubic Symphysis Dysfunction|Pubic Symphysis dysfunction]]
* [[Hip Osteoarthritis]]
* [[Piriformis Syndrome]]
*[[Spondyloarthritis]]
*[[Pregnancy Related Pelvic Pain|Pregnancy related pelvic pain]]
*[[Sacroiliitis]]
*[[Sacroiliitis]]


== Resources: ==
== Viewing ==
This 13 minute video is on the bony pelvis{{#ev:youtube|3v5AsAESg1Q|300}}<ref>Anatomy Zone. Bones of the Pelvis. Available from: https://youtu.be/3v5AsAESg1Q [last accessed 27/01/2020]</ref>
 
== References  ==
[[Category:Anatomy]]
[[Category:Anatomy]]
[[Category:Pelvic Health]]  
[[Category:Pelvic Health]]  
Line 159: Line 143:
[[Category:Mens_Health]]
[[Category:Mens_Health]]
<references />
<references />
[[Category:Anatomical Landmarks]]

Latest revision as of 11:51, 23 December 2021

Description[edit | edit source]

Bones of the pelvis

The pelvis consists of the sacrum, the coccyx, the ischium, the ilium, and the pubis.[1][2] The structure of the pelvis supports the contents of the abdomen while also helping to transfer the weight from the spine to the lower limbs.[3] During gait, the joints within the pelvis work together to decrease the amount of force transferred from the ground and lower extremities to the spine and upper extremities.[3]

Bony Pelvis[edit | edit source]

Pelvis landmarks.jpeg

Until puberty, each hip bone consists of three separate bones yet to be fused: ilium, ischium and pubis connected by the tri-radiate cartilage.

The two hip bones are joined anteriorly at the pubic symphysis and posteriorly to the sacrum at the sacroiliac joint. The hip bones incorporate the acetabulum, which articulates with the proximal femur at the hip joint[4].

  • In addition to carrying upper body weight, this multi-surfaced pelvic ring can transfer upper body weight to the lower limbs and act as attachment points for lower limb and trunk muscles.
  • Furthermore, the bony pelvis protects the pelvic and abdomino-pelvic viscera[5].

Joint Articulations[edit | edit source]

Ligaments of the pelvis anterior aspect Primal.png

The pelvic bones make 4 pelvic joints.

  • One sacrococcygeal joint posteriorly, a hinge joint between the sacrum and the coccyx.
  • 2 sacroiliac joints with the sacrum, the strongest joints in the body.
  • 1 symphysis pubis anteriorly, a cartilaginous joint with cartilage in between.

Other articulation: The pelvis and femur articulate via the acetabulum, at the hip joint.[1]

Ligaments of the Pelvis[edit | edit source]

The bony pelvis is held together with the support of the 3 vertebro-pelvic ligaments.

  1. Iliolumbar ligament
  2. Sacrospinous ligament
  3. Sacrotuberous ligament


Other ligaments attached to bony pelvis include the sacrococcygeal ligaments, pubic symphysis ligaments, and endopelvic fascia ligament.

Additional ligaments may be found in the female pelvis. These ligaments of the female reproductive system support the internal female genitalia in the female pelvis. See The Uterine And Cervical Ligaments

Muscles[edit | edit source]

There are 36 muscles that attach to the sacrum or hip bone (innominates). The purpose of these muscles is primarily to provide stability to the joint not to produce movement.[6]

Muscles that attach to the sacrum or innominates are:

Adductor brevis Adductor longus Adductor magnus Biceps femoris - long head Coccygeus
Erector Spinae External oblique Gluteus maxiumus Gluteus medius Gluteus minimus
Gracilis Iliacus Inferior gemellus Internal oblique Latissimus dorsi
Levator ani Multifidus Obturator internus Obturator externus Pectineus
Levator ani Piriformis Psoas minor Pyramidalis Quadratus femoris
Quadratus lumborum Rectus abdominis Rectus femoris Sartorius Semimembranosus
Semitendonosus Sphincter urethrae Superficial transverse perineal ischiocavernous Superior gemellus Tensor fascia lata
Transversus abdominus

The Pelvic Cavity[edit | edit source]

Body Cavities Frontal view labeled.jpeg

The space inside the pelvic bones is called the pelvic cavity.

  1. Superiorly, the pelvic cavity is continuous with the abdominal cavity.
  2. Inferiorly, the pelvic cavity is bounded by the Pelvic floor.

Image: The various cavities of the human body as seen in a frontal projection, with the pelvic cavity labeled 4.

The pelvic cavity is divided into two parts:

  1. The greater pelvis is part of the abdomen, so it is also referred to as the false pelvis.
  2. The lesser pelvis is part of the pelvis, so it is also called the true pelvis.

The pelvic cavity functions as housing space for the urinary bladder, the pelvic colon, internal reproductive organs, and rectum. The pelvic cavity additionally houses other internal structures and tissues including muscles, arteries, veins, nerves, and the pelvic connective tissue.[5]

Pelvic Floor[edit | edit source]

Pelvic floor.png

The pelvic floor is the inferior muscular layer of the true pelvic cavity. It separates the pelvic cavity superiorly from the perineum which lies inferior to the pelvic floor. It functions as a boundary of the pelvis and abdominal cavity while supporting the weight of the visceral organs[5].

Image: The pelvic floor.

Sex-specific differences[edit | edit source]

The female pelvis consists of a wider sacrum and a wider subpubic angle when compared to males. The female pelvis’ ischial spines are also less prominent than the male’s ischial spines.[7][8][9] The male pelvis’ sacrum is generally longer and more curved with a narrower sub-pubic arch.[9] In females a wider pelvic aperture is needed as it functions as the birth canal during labour.[7][8][10][11][12]

Associated Conditions[edit | edit source]

The pelvis is of great clinical significance as many issues or disorders can occur[5] eg

Viewing[edit | edit source]

This 13 minute video is on the bony pelvis

[13]

References[edit | edit source]

  1. 1.0 1.1 White TD, Black MT, Folkens PA. Human osteology. Academic press; 2011.
  2. Lewis CL, Laudicina NM, Khuu A, Loverro KL. The human pelvis: Variation in structure and function during gait. The Anatomical Record 2017;300(4):633-42.
  3. 3.0 3.1 Magee DJ. Orthopedic physical assessment. Elsevier Health Sciences; 2013.
  4. Radiopedia Pelvis Available: https://radiopaedia.org/articles/pelvis-1(accessed 6.11.2021)
  5. 5.0 5.1 5.2 5.3 Chaudhry SR, Hulaibi FA, Nahian A, Chaudhry K. Anatomy, Abdomen and Pelvis, Pelvis. StatPearls [Internet]. 2020 May 24.Available: https://www.ncbi.nlm.nih.gov/books/NBK482258/(accessed 6.11.2021)
  6. Calvillo O, Skaribas I, Turnipseed J. Anatomy and pathophysiology of the sacroiliac joint. Current review of pain 2000;4(5):356-61.
  7. 7.0 7.1 Kurki HK. Pelvic dimorphism in relation to body size and body size dimorphism in humans. Journal of Human Evolution 2011;61(6):631-43.
  8. 8.0 8.1 Meindl RS, Lovejoy CO, Mensforth RP, Carlos LD. Accuracy and direction of error in the sexing of the skeleton: implications for paleodemography. American Journal of Physical Anthropology 1985;68(1):79-85.
  9. 9.0 9.1 Tague RG. Sexual dimorphism in the human bony pelvis, with a consideration of the Neandertal pelvis from Kebara Cave, Israel. American Journal of Physical Anthropology 1992;88(1):1-21.
  10. Rosenberg KR. The evolution of modern human childbirth. American Journal of Physical Anthropology.1992;35(S15):89-124.
  11. Lovejoy CO. The natural history of human gait and posture: part 2. Hip and thigh. Gait & posture 2005;21(1):113-24.
  12. Abitbol MM. The shapes of the female pelvis. Contributing factors. The Journal of reproductive medicine 1996;41(4):242-50.
  13. Anatomy Zone. Bones of the Pelvis. Available from: https://youtu.be/3v5AsAESg1Q [last accessed 27/01/2020]