The Adult Symphysis Pubis: Normal and Abnormal

Vix, Vernon A.; Ryu, Chi Yol

doi:10.2214/ajr.112.3.517

Cited by 58 publications

(33 citation statements)

References 3 publications

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“…Bone alterations include erosion of the subchondral bone, leaving an irregular symphysial surface, sclerosis, cyst formation and, less often, periarticular osteophytes (Besjakov et al, 2003;Budak & Oliver, 2013;Cunningham et al, 2007;Major & Helms, 1997;Mehin et al, 2006). The bony alterations resemble both sequelae from parturition trauma (Putschar, 1976;Vix & Ryu, 1971;Wurdinger et al, 2002) and gross features of later phases described in ageing schemata. Pubic symphysis stress injury is common in athletes -an incidence of 14-28% has been reported in soccer players (Hackney, 1993) and the frequency of bony alterations may be greater than this given that those with no or minor symptoms are unlikely to come to the attention of physicians.…”

Section: The Biology Of Bony Age Indicatorsmentioning

confidence: 64%

“…The effect of oestrogens on the pubic bone stands in contrast to their effects on other parts of the skeleton, where they enhance bone formation. Bony resorption at the pubic symphysis has been confirmed during pregnancy in humans (Abramson et al, 1934;Putschar, 1976;Vix & Ryu, 1971).…”

Section: The Biology Of Bony Age Indicatorsmentioning

confidence: 98%

“…The ligamentous laxity that accompanies pregnancy widens the joint space at the symphysis. In humans, this process peaks at full term (Bahlmann et al, 1993) when the joint space may be 3 mm greater than the 4-6 mm characteristic of female nullipares (Garagiola et al, 1989;Keriakos et al, 2011;Vix & Ryu, 1971). The joint space in most cases widens further during labour (Rustamova et al, 2009).…”

Section: The Biology Of Bony Age Indicatorsmentioning

confidence: 99%

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The effect of factors other than age upon skeletal age indicators in the adult

Mays

2015

Annals of Human Biology

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Section: The Biology Of Bony Age Indicatorsmentioning

confidence: 64%

Section: The Biology Of Bony Age Indicatorsmentioning

confidence: 98%

Section: The Biology Of Bony Age Indicatorsmentioning

confidence: 99%

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The effect of factors other than age upon skeletal age indicators in the adult

Mays

2015

Annals of Human Biology

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“…Modest relaxation of the pelvic ligaments also occurs during human pregnancy (Crelin 1969b;Vix and Ryu 1971;Gamble et al 1986). However, it does not occur in species such as rats (Crelin and Brightman 1957;Ortega et al 2001) and sheep (Bassett and Phillipps 1955).…”

Section: Introductionmentioning

confidence: 99%

Phenotypic modulation of fibroblastic cells in mice pubic symphysis during pregnancy, partum and postpartum

Moraes

Pinheiro

Toledo

et al. 2004

Cell and Tissue Research

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In many species, the cartilaginous pubic symphysis of the pregnant female is gradually replaced by a fibrous connective tissue, forming a flexible and elastic interpubic ligament. This newly formed ligament is responsible for the separation of the pubic bones, enabling safe delivery of the young. Following labor, the ligament undergoes rapid involution. To our knowledge, no previous work has focused on the phenotypic modulation that is responsible for the changes present at the interpubic ligament throughout the relaxation and closing of the symphysis. The purpose of this study was to investigate the ultrastructural features and immunophenotype of the peculiar cell type found in the pubic symphysis of cycling, pregnant and postpartum mice. In particular, immunohistochemistry studies were conducted on the expressions of the cytoskeletal proteins desmin, vimentin and alpha-smooth muscle actin (alpha-SMA). During pregnancy, the pubic symphysis cells always expressed alpha-SMA, whereas the expression of vimentin and desmin was transient from early pregnancy to postpartum. Furthermore, the expression patterns of these three cytoskeletal proteins were distinct. Cells present in the medial region of the mouse symphysis in cycling and at D12 displayed ultrastructural features characteristic of a typical fibroblast. In contrast, during the last week of pregnancy and in postpartum these cells acquired ultrastructural features representative of a myofibroblast; for example, a fibronexus and a contractile apparatus were found to be present lying in close contact with the extracellular collagenous and elastic system fibrils. Taken together, these results strongly suggest a contractile function for these cells which might contribute to support of the varying mechanical stresses present during pubic bone movement.

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“…Die Symphyse wird beim Liegen auf Druck, beim Gehen auf Abscherung, beim Stand auf beiden Beinen vor allem auf Zug und beim Stand auf einem Bein vornehmlich auf Schub beansprucht. Ihre Form unterliegt groûen interindividuellen Variationen, welche häufiger bei Frauen als bei Männern beobachtet werden [28]. Abb.…”

Section: Anatomie Und Funktion Der Symphyseunclassified