Peripartum Pubic Symphysis Diastasis-Practical Guidelines

Testing the reliability of the rearticulation of osteological primate pelves in comparative morphological studies

The evolution of human pelvic form is primarily studied using disarticulated osteological material of living and fossil primates that need rearticulation to approximate anatomical position. To test whether this technique introduces errors that impact biological signals, virtual rearticulations of the pelvis in anatomical position from computed tomography scans were compared with rearticulated models from the same individuals for one female and one male of Homo sapiens, Pan troglodytes, Macaca mulatta, Lepilemur mustelinus, Galago senegalensis, and Nycticebus pygmaeus. "Cadaveric" pelvic bones were first analyzed in anatomical position, then the three bones were segmented individually, intentionally scattered, and "rearticulated" to test for rearticulation error. Three-dimensional landmarks and linear measurements were used to characterize the overall pelvis shape. Cadaveric and rearticulated pelves were not identical, but inter-specific and intra-specific shape differences were higher than the landmarking error in the cadaveric individuals and the landmarking/rearticulation error in the rearticulated pelves, demonstrating that the biological signal is stronger than the noise introduced by landmarking and rearticulation. The rearticulation process, however, underestimates the medio-lateral pelvic measurements in species with a substantial pubic gap (e.g., G. senegalensis, N. pygmaeus) possibly because the greater contribution of soft tissue to the pelvic girdle introduces higher uncertainty during rearticulation. Nevertheless, this discrepancy affects only the caudal-most part of the pelvis. This study demonstrates that the rearticulation of pelvic bones does not substantially affect the biological signal in comparative 3D morphological studies but suggests that anatomically connected pelves of species with wide pubic gaps should be preferentially included in these studies.

National variation in guidance for the management of pregnant women presenting with major trauma

INTRODUCTION

The initial assessment of pregnant women presenting with significant injuries is more complicated than that of non-pregnant women because of physiological and anatomical changes, and the presence of the fetus. The aim of this study was to determine whether guidelines for the early management of severely injured pregnant women exist, which aspects of assessment/management they cover and to what extent there is national consistency.

METHODS

A freedom of information request was submitted to 125 acute National Health Service trusts in England and six in Wales. The trusts were asked to confirm whether they have a guideline for the management of major trauma in pregnant women presenting to the emergency department and what the guidelines were.

RESULTS

In total, 96.2% of trusts responded, of which 19% have a specific guideline and 7.9% have a generic guideline for assessing pregnant women in the emergency department, irrespective of injury severity. Of the responding trusts, 19.8% have a protocol that specifies when an obstetric trauma call should be put out by the emergency department and when a pregnant woman should be transferred to a major trauma centre for definitive management. Our results found that 69.8% routinely call obstetrics or gynaecology to the trauma call compared with 36.5% calling paediatrics.

CONCLUSIONS

The heterogeneity evident across trusts necessitates the establishment of national guidelines for the assessment of pregnant women with major trauma to standardise communication and delivery of care.

Tratamento cirúrgico de lesão periparto do anel pélvico: Relato de caso

Durante o período gestacional, ocorre a dilatação da sínfise púbica, de forma a permitir o parto vaginal. No entanto, o alargamento exacerbado pode indicar lesão ligamentar, instabilidade pélvica, e desencadear queixa álgica importante. Tal quadro é uma condição incomum, denominada disjunção da sínfise púbica periparto (DSPP). Neste artigo, relatamos o caso de uma paciente com idade gestacional de 38 semanas que mantinha queixa álgica intensa na região lombar e pélvica, irradiada para o quadril e o joelho direito, após parto normal de gestação única, sem intercorrências obstétricas. A paciente apresentava extenso edema e equimose vulvar, e exames radiográficos evidenciaram disjunção da sínfise púbica de 7 cm e abertura da articulação sacroilíaca direita. Há controvérsias na literatura quanto à indicação do tratamento desses casos, mas os achados clínicos e radiográficos motivaram a opção pelo tratamento cirúrgico. Realizou-se o fechamento da sínfise púbica com placas ortogonais, além da estabilização da articulação sacroilíaca com parafuso percutâneo. A paciente fez acompanhamento ambulatorial por seis meses, com boa evolução e sem intercorrências, e retornou às atividades laborais com dor mínima, boa função e satisfação com o tratamento.

Postpartum Pubic Symphysis Diastasis: A Case Report

We present the case of a 25-year-old African American female patient (G1P0) with a past medical history of brain arteriovenous malformation repair, pneumonia, and a urinary tract infection who was admitted to the labor and delivery floor at 39 weeks for a spontaneous vaginal delivery of a 4.025 kg female baby. In the immediate postpartum (PP) period, the patient presented with severe pelvic pain and trouble ambulating. Conservative management of oral non-narcotic analgesics was initiated until the diagnosis of PP pubic symphysis diastasis (PSD) was made. Due to the persistence of pelvic pain, the patient underwent a pubic symphysis joint steroid injection and was discharged on day 8. Within 24 hours of discharge, the patient was readmitted to the emergency department with severe pain and an inability to walk. Her pain was managed conservatively with intravenous narcotics and non-steroidal anti-inflammatories, which quickly dissipated the pain. She was observed and discharged once she reported improvement in pain, and she was reassessed five days later at her obstetrician's clinic. In the clinic, the patient presented with mild tenderness in the pubic symphysis region but demonstrated improvement in her antalgic gait with an ability to walk and urinate without difficulty. Despite a lack of follow-up imaging, the patient was reassured that her PSD and associated tenderness should completely resolve within three to four months.

Birth outcomes following pelvic ring injury: A retrospective study

OBJECTIVE

To report obstetric outcomes in pregnant women with previous pelvic ring injury (PRI) and investigate the correlation between residual pelvic deformity and the mode of delivery.

DESIGN

Retrospective cohort study.

SETTING

Single medical centre in Taiwan.

POPULATION

Forty-one women with PRI histories from 2000 to 2021 who subsequently underwent pregnancy and delivery.

METHODS

All patients had complete PRI treatment and radiological follow up for at least 1 year. The demographic data, radiological outcomes after PRI and obstetric outcomes were collected to investigate the potential factors of delivery modes using non-parametric approaches and logistic regression. Caesarean section (CS) rates among different subgroups were reported.

MAIN OUTCOME MEASURES

Comparisons of demographic data and radiological outcomes (Matta/Tornetta criteria and Lefaivre criteria) after PRI among patients who had subsequent pregnancy and underwent vaginal deliveries (VD) or CS.

RESULTS

There were 14 VD and 27 CS in 41 patients. Nine patients underwent CS because of their PRI history, 12 patients underwent CS for other obstetric indications and 20 underwent trial of labour. Based on the logistic regression model, retained trans-iliosacral implants did not significantly increase the risk of CS (odds ratio [OR] 1.20; 95% CI 0.17-8.38). Higher pelvic asymmetry value by Lefaivre criteria was a potential risk factor for CS after previous PRI (OR 1.52; 95% CI 1.043-2.213).

CONCLUSIONS

VD is possible after PRI. Retained trans-iliosacral implants do not affect the delivery outcome. Residual pelvic asymmetry after PRI by Lefaivre criteria is a potential risk factor for CS.

Pathologic Pubic Symphysis Diastasis in Pregnant Pelvic Ring Fracture Treated with INFIX: A Case Report

CASE

Unstable pelvic ring fractures in pregnancy are an uncommon injury. Successful treatment of these patients with an INFIX device is even less common, with sparse literature to document the patient outcomes. We found no literature documenting the acute management of a pregnant patient with an INFIX device with (1) dynamic changes recorded, such as increasing pubic symphysis diastasis, and (2) restoration of normal symphyseal anatomy after birth and INFIX removal.

CONCLUSION

Use of a pelvic INFIX during pregnancy allowed functional independence. The construct offered sufficient stability while also allowing for pubic symphysis diastasis. After parturition, she returned to normal function with no injury sequela.

Multiparity and Aging Impact Chondrogenic and Osteogenic Potential at Symphyseal Enthesis: New Insights into Interpubic Joint Remodeling

Pregnancy and childbirth cause adaptations to the birth canal to allow for delivery and fast recovery. To accommodate delivery through the birth canal, the pubic symphysis undergoes changes that lead to the interpubic ligament (IpL) and enthesis formation in primiparous mice. However, successive deliveries influence joint recovery. We aimed to understand tissue morphology and chondrogenic and osteogenic potential at symphyseal enthesis during pregnancy and postpartum in primiparous and multiparous senescent female mice. Morphological and molecular differences were found at the symphyseal enthesis among the study groups. Despite the apparent incapacity to restore cartilage in multiparous senescent animals, the symphyseal enthesis cells are active. However, these cells have reduced expression of chondrogenic and osteogenic markers and are immersed in densely packed collagen fibers contiguous to the persistent IpL. These findings may indicate alterations of key molecules in the progenitor cell population maintenance of the chondrocytic and osteogenic lineages at the symphyseal enthesis in multiparous senescent animals, possibly compromising the mouse joint histoarchitecture recovery. This sheds light on the distention of the birth canal and the pelvic floor that may play a role in pubic symphysis diastasis (PSD) and pelvic organ prolapse (POP), both in orthopedic and urogynecological practice in women.

Ectopic bone formation causing chronic pubis symphysis pain: successful management with resection and pubic fusion

Chronic musculoskeletal anterior pelvic pain may originate from a variety of different sources making the diagnosis difficult. Ectopic bone formation on the pubic symphysis is extremely rare and may cause significant disability. Reported herein is the case of a very active patient with symphysis pubis ectopic bone formation causing disability for more than 10 years. Resection of the ectopic bone combined with pubis symphysis fusion led to a successful outcome allowing the patient to return to his previous recreational activities.

Clinical Presentation and Management of Peripartum Pubic Diastasis

Background

Symphysis pubis diastasis (SPD) is an uncommon peripartum complication which can have short-term morbidities secondary to pain and restricted movements as well as long-term complications. It is important to diagnose this condition as it causes significant discomfort to the nursing mothers. We present our experience in five patients with SPD who were managed successfully.

Methods

Present study is an observation of five cases of SPD managed in a single unit in a tertiary care center over three years from January 2017 to December 2019. All women with symptoms of SPD with inter-pubic distance of more than 10 mm were selected for the study. The demographic profile, clinical details, diagnostic imaging findings, and treatment provided for such patients were noted down from the individual case records. Follow-up of each patient for improvement in the symptoms and X-ray findings was available till 3 months for each case.

Results

Mean age of the women with SPD was 29.8 ± 5.4 years. Four women had vaginal delivery and one had vacuum delivery. Average birth weight is 3.26 ± 0.85 kg. Mean duration of first stage of labor is 6.6 ± 0.89 h and median of second stage is 35 min. Average inter-pubic distance at the time of diagnosis on X-ray was 1.84 ± 0.2 cm. All women were managed conservatively with bed rest, analgesics, pelvic binder and physiotherapy. Improvement in the range of movement was noted over average of 21.8 ± 3.7 days and symptoms resolved over 14.4 ± 2.6 weeks.

Conclusion

Treating obstetrician should be aware of this condition as simple treatment measures can avoid the long-term morbidities and complications.