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Injury Oct 2022Historically most pediatric pelvic fractures were treated non-operatively because of the presumed potential of the pediatric pelvis to remodel and the subsequent... (Review)
Review
BACKGROUND
Historically most pediatric pelvic fractures were treated non-operatively because of the presumed potential of the pediatric pelvis to remodel and the subsequent increased fracture stability. Currently a wide variety of classifications in pediatric pelvic fractures is used to assess fracture stability and guide treatment, yet none have proven to be ideal since the structural behavior of the pediatric pelvis differs greatly from the adult pelvis. The aim of this review is to critically appraise the use of these different classification systems, fracture (in)stability, the treatment of pediatric pelvic fractures and how it reflects on long-term complications such as pelvic asymmetry and functional outcome.
METHODS
A literature search was performed in Medline, Embase, Cochrane, PubMed, Google Scholar and references of the selected articles. Studies that reported on pain, leg length discrepancy (LLD), abnormal gait (GA), pelvic asymmetry, and functional outcomes of pediatric pelvic fractures were included.
RESULTS
A total of six different classification systems were used, the most common were Tile (n= 9, 45%) and Torode and Zieg (n= 8, 40%). There was great disparity in treatment choice for the same type of fracture pattern, resulting in several pelvic ring fractures that were defined as unstable being treated non-operatively. Pelvic asymmetry is seen in rates up to 48% in non-operatively treated patients. In contrast, pelvic asymmetry in surgically fixated unstable pelvic fractures was rare, and these patients often showed excellent functional outcomes during follow-up.
CONCLUSION
There is a substantial heterogeneity in which fracture patterns are considered to be unstable or in need of surgical fixation. Functional outcomes seem to be correlated with the frequency of pelvic asymmetry and are likely due to an underestimation of the stability of the pelvic fracture. Taking into consideration the force that is necessary to cause a facture in the pediatric pelvis, a fracture of the pelvic ring alone could be suggestive for instability. The results of this review imply that the field of pediatric pelvic surgery is currently not grasping the full scope of the complexity of these fractures, and that there is a need for a pediatric pelvic classification system and evidence-based treatment guideline.
Topics: Adult; Child; Fracture Fixation; Fracture Fixation, Internal; Fractures, Bone; Humans; Leg Length Inequality; Pelvic Bones; Pelvis; Retrospective Studies
PubMed: 35882582
DOI: 10.1016/j.injury.2022.07.009 -
Acta Bio-medica : Atenei Parmensis Dec 2019Pelvic ring fractures represent a challenge for orthopaedic surgeon. Their management depends on patient's condition, pattern of fracture and associated injuries....
BACKGROUND AND AIM
Pelvic ring fractures represent a challenge for orthopaedic surgeon. Their management depends on patient's condition, pattern of fracture and associated injuries. Optimal timing for synthesis is not yet clear. The aim of this study was to define if surgical timing influenced clinic and radiographic outcomes following open reduction and internal fixation for Tile B and C fractures.
MATERIALS AND METHODS
38 patients were included. Patients underwent a clinical examination with the Majeed Score, Iowa Pelvic Score and Orlando Pelvic Score. The radiographic assessment was performed according to Matta Pelvic Score. A statistical analysis of the data compared patients who were operated within 3 weeks (group 1) and those operated later (group 2).
RESULTS
Both clinical and radiological outcomes were influenced by timing of surgery.
CONCLUSION
Pelvic ring fractures interest many polytrauma patients and, therefore, their surgical orthopedic approach is frequently delayed as consequence of the severity of the associated clinical conditions. An early surgery of pelvic rong fractures allows a better quality of reduction and osteosynthesis.
Topics: Adult; Female; Fracture Fixation, Internal; Fractures, Bone; Humans; Male; Middle Aged; Open Fracture Reduction; Pelvic Bones; Radiography; Time Factors; Treatment Outcome
PubMed: 31821288
DOI: 10.23750/abm.v90i12-S.8949 -
European Journal of Trauma and... Feb 2022Angioembolization (AE) has been questioned as first-line modality for hemorrhage control of pelvic fracture (PF)-associated bleeding due to its potential inconsistent...
PURPOSE
Angioembolization (AE) has been questioned as first-line modality for hemorrhage control of pelvic fracture (PF)-associated bleeding due to its potential inconsistent timely availability. We aimed to describe the patterns of AE use with hemostatic resuscitation and hypothesized that time to AE improved during the study period.
METHODS
A Level-1 trauma center's prospective PF database was analyzed. All consecutive PFs referred to angiography between 01/01/2009 and 12/31/2018 were included. All suspected pelvic hemorrhage was managed with AE; pelvic packing was not performed. Demographics, injury/shock severity, 24-h transfusion data, time to AE and mortality were recorded. Data are presented as median (IQR).
RESULTS
During the 10-year study period, 1270 PF patients were treated. Thirty-six (2.8%) [75% male, 49 (33;65) years, ISS 36 (24;43), base deficit 3.65 (5.9;0.6), transfusions 4(2;7)] had AE. The indication for AE was clinical suspicion (CS) of pelvic bleeding [CS 24(67%)] or arterial blush on CT [CT 12 (33%)]. Median time to AE was 141 min for CS, and 223 min for CT, with no change over the study period. Patients with CS had a higher ISS, worse base deficit, greater transfusion requirements and faster time to AE. Five patients (14%) died. There were no deaths attributed to exsanguination.
CONCLUSIONS
Time to AE did not improve. Patients referred from CT are physiologically different from CS and should be analyzed accordingly, with CS resulting in faster time to AE in sicker patients. Contemporary resuscitation challenges the need for hyperacute AE as no patients exsanguinated despite time to AE of more than 2 h.
Topics: Embolization, Therapeutic; Female; Fractures, Bone; Humans; Injury Severity Score; Male; Pelvic Bones; Pelvis; Prospective Studies; Retrospective Studies
PubMed: 33037465
DOI: 10.1007/s00068-020-01510-1 -
Asian Journal of Surgery Jan 2021Straddle fracture, a superior and inferior ramus fracture of both sides, is generally treated conservatively. However, posterior pelvic ring injury is often associated... (Review)
Review
Straddle fracture, a superior and inferior ramus fracture of both sides, is generally treated conservatively. However, posterior pelvic ring injury is often associated with straddle fracture, leading to unstable pelvic bone fracture that requires surgical treatment. The present study reports the clinical and radiological outcomes of straddle fracture with posterior pelvic ring injury. This study included 73 patients (41 men, 32 women) with a straddle fracture injury. The injury mechanism, injury severity score (ISS), accompanying injuries, presence of posterior pelvic ring injury, and fixation methods for the pelvic fracture were analyzed, and outcomes were evaluated functionally and radiologically. Of the 73 patients, 56 (77%) had a posterior pelvic ring injury and 7 died. In 43 patients, the posterior pelvic ring injuries constituted unstable pelvic injury and were treated surgically. The fixation method was determined based on the severity of the posterior pelvic injury. The patients' mean ISS was 24.7 points. Radiological evaluation of surgical outcomes in 43 patients revealed the outcomes as anatomic in 20, nearly anatomic in 14, moderate in 5, and poor in 4, whereas functional evaluation revealed the outcomes as excellent in 21, good in 9, fair in 7, and poor in 6. Posterior pelvic ring fracture can accompany straddle fractures, which may lead to pelvic injury instability. Thus, special attention is required for patients with a straddle fracture.
Topics: Adult; Aged; Female; Fracture Fixation, Internal; Fractures, Bone; Humans; Male; Middle Aged; Pelvic Bones; Pelvis; Radiography; Trauma Severity Indices; Treatment Outcome; Young Adult
PubMed: 32376214
DOI: 10.1016/j.asjsur.2020.03.021 -
Anthropologischer Anzeiger; Bericht... Feb 2022The human pelvis has been reported to change in shape throughout adult lifetime, and also the expression of parturition scars, or "pelvic features", increases with age....
The human pelvis has been reported to change in shape throughout adult lifetime, and also the expression of parturition scars, or "pelvic features", increases with age. However, little is known about the causes and timing of these changes. Here we investigate changes in pelvic shape and the expression of pelvic features by applying a comprehensive geometric morphometric approach to a modern sample of 167 adult individuals with known age, parity, and cause of death. Our results confirm that the pelvis changes in shape during adult life, but to a larger magnitude in females compared to males. Moreover, females showed three different phases of pelvic shape change, coinciding with the main period of reproduction (from 17 to about 37-40 years), the period after that but before menopause, and the postmenopausal period (after 50 years of age). Males exhibited two phases with relatively similar shape changes. The expression of parturition scars increased in females until about 40 years of age and stayed relatively constant thereafter. Only a very weak increase of feature expression was found in males. We hypothesize that changes of adult pelvic shape and feature expression result from a combination of hormone-mediated and mechanically induced bone remodeling. Estrogen-induced and pregnancy-related bone remodeling dominates in premenopausal women, whereas bone remodeling in response to mechanical factors may underlie pelvic shape changes in men and postmenopausal women. The continual widening of the birth canal during the reproductive period eases childbirth in a population, but it is unlikely that this remodeling pattern specifically evolved as an obstetric adaptation in the human lineage. The highly conserved endocrine system and estrogen-induced pelvic bone remodeling were already in place when the neonatal brain increased in the human lineage. But the regularity control of this conserved pathway may have been "fine-tuned" by selective forces in the human lineage.
Topics: Adult; Female; Humans; Infant, Newborn; Male; Parturition; Pelvic Bones; Pelvis; Pregnancy
PubMed: 34664055
DOI: 10.1127/anthranz/2021/1463 -
Journal of Orthopaedics and... May 2020Iliosacral screw fixation is safe and effective but can be complicated by loss of fixation, particularly in patients with osteopenic bone. Sacral morphology dictates...
BACKGROUND
Iliosacral screw fixation is safe and effective but can be complicated by loss of fixation, particularly in patients with osteopenic bone. Sacral morphology dictates where iliosacral screws may be placed when stabilizing pelvic ring injuries. In dysmorphic sacra, the safe osseous corridor of the upper sacral segment (S1) is smaller and lacks a transsacral corridor, increasing the need for fixation in the second sacral segment (S2). Previous evidence suggests that S2 is less dense than S1. The aim of this cross-sectional study is to further evaluate bone mineral density (BMD) of the S1 and S2 iliosacral osseous pathways through morphology stratification into normal and dysmorphic sacra.
MATERIALS AND METHODS
Pelvic computed tomography scans of 50 consecutive trauma patients, aged 18 to 50 years, from a level 1 trauma center were analyzed prospectively. Five radiographic features (upper sacral segment not recessed in the pelvis, mammillary bodies, acute alar slope, residual S1 disk, and misshapen sacral foramen) were used to identify dysmorphic characteristics, and sacra with four or five features were classified as dysmorphic. Hounsfield unit values were used to estimate the regional BMD of S1 and S2. Student's t-test was utilized to compare the mean values at each segment, with statistical significance being set at p < 0.05. No change in clinical management occurred as a result of inclusion in this study.
RESULTS
A statistical difference in BMD was appreciated between S1 and S2 in both normal and dysmorphic sacra (p < 0.0001), with 28.4% lower density in S2 than S1. Further, S1 in dysmorphic sacra tended to be 4% less dense than S1 in normal sacra (p = 0.047). No difference in density was appreciated at S2 based on morphology.
CONCLUSIONS
Our results would indicate that, based on BMD alone, fixation should be maximized in S1 prior to fixation in S2. In cases where S2 fixation is required, we recommend that transsacral fixation should be strongly considered if possible to bypass the S2 body and achieve fixation in the cortical bone of the ilium and sacrum.
LEVEL OF EVIDENCE
Level III.
Topics: Adolescent; Adult; Bone Density; Bone Screws; Cross-Sectional Studies; Female; Humans; Ilium; Male; Middle Aged; Orthopedic Procedures; Pelvic Bones; Sacrum; Tomography, X-Ray Computed; Young Adult
PubMed: 32451838
DOI: 10.1186/s10195-020-00545-9 -
Journal of Neurosurgery. Spine Dec 2022The purpose of this study was to describe the genesis of the AO Spine Sacral and Pelvic Classification System in the context of historical sacral and pelvic grading... (Review)
Review
OBJECTIVE
The purpose of this study was to describe the genesis of the AO Spine Sacral and Pelvic Classification System in the context of historical sacral and pelvic grading systems.
METHODS
A systematic search of MEDLINE, EMBASE, Google Scholar, and Cochrane databases was performed consistent with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to identify all existing sacral and pelvic fracture classification systems.
RESULTS
A total of 49 articles were included in this review, comprising 23 pelvic classification systems and 17 sacral grading schemes. The AO Spine Sacral and Pelvic Classification System represents both the evolutionary product of these historical systems and a reinvention of classic concepts in 5 ways. First, the classification introduces fracture types in a graduated order of biomechanical stability while also taking into consideration the neurological status of patients. Second, the traditional belief that Denis central zone III fractures have the highest rate of neurological deficit is not supported because this subgroup often includes a broad spectrum of injuries ranging from a benign sagittally oriented undisplaced fracture to an unstable "U-type" fracture. Third, the 1990 Isler lumbosacral system is adopted in its original format to divide injuries based on their likelihood of affecting posterior pelvic or spinopelvic stability. Fourth, new discrete fracture subtypes are introduced and the importance of bilateral injuries is acknowledged. Last, this is the first integrated sacral and pelvic classification to date.
CONCLUSIONS
The AO Spine Sacral and Pelvic Classification is a universally applicable system that redefines and reorders historical fracture morphologies into a rational hierarchy. This is the first classification to simultaneously address the biomechanical stability of the posterior pelvic complex and spinopelvic stability, while also taking into consideration neurological status. Further high-quality controlled trials are required prior to the inclusion of this novel classification within a validated scoring system to guide the management of sacral and pelvic injuries.
Topics: Humans; Retrospective Studies; Sacrum; Pelvic Bones; Fractures, Bone; Pelvis; Spinal Fractures
PubMed: 35907199
DOI: 10.3171/2022.5.SPINE211468 -
Journal of Musculoskeletal & Neuronal... Mar 2020To examine sex differences in bone characteristics in competitive soccer players.
OBJECTIVES
To examine sex differences in bone characteristics in competitive soccer players.
METHODS
43 soccer players (male, n=23; female, n=20), and 43 matched controls (males, n=23; females, n=20), completed the study. Areal BMD (aBMD) of the total body, lumbar spine, and dual femur and tibiae volumetric BMD (vBMD), bone geometry, and bone strength variables (pQCT) were measured. Bone-specific physical activity and training history were assessed.
RESULTS
Male soccer players had significantly greater (p≤0.05) total body and hip aBMD, hip strength indices and 4% and 38% tibia variables than females. Regression analyses determined that BFLBM, not sex, was the strongest predictor of bone variables. Female soccer players exhibited significantly greater percent differences from controls for tibiae variables than males (p≤0.05). Soccer players had greater aBMD and hip strength indices than controls (p≤0.040). Soccer-specific asymmetries were found for 38% total area (2.1%) and pSSI (3.8%), favoring the non-dominant leg (both p≤0.017).
CONCLUSION
Bone characteristics adjusted for body size were greater in male versus female soccer players. However, body composition variables were more important predictors of bone characteristics than sex. There were no sex differences in the magnitude of limb asymmetries, suggesting skeletal responsiveness to mechanical loading was similar in males and females.
Topics: Absorptiometry, Photon; Adolescent; Athletes; Body Composition; Bone Density; Cross-Sectional Studies; Female; Humans; Lumbar Vertebrae; Male; Pelvic Bones; Sex Characteristics; Soccer; Tibia; Young Adult
PubMed: 32131370
DOI: No ID Found -
Journal of Orthopaedic Research :... Mar 2021Unstable pelvic ring fractures are severe and complex injuries, and surgical fixation is challenging and can be complicated by early failure due in part to difficulties...
Unstable pelvic ring fractures are severe and complex injuries, and surgical fixation is challenging and can be complicated by early failure due in part to difficulties with securely fixing screws in low-density bone. There is limited information in the literature about how the density distribution across the pelvic bones changes with age and sex. In this study, we used 60 sets of calibrated bone density measurements obtained opportunistically from clinical computed tomography scans of the pelvis. Three-dimensional models of the innominate bone were produced and the effects of age and sex on cortical bone density modeled. Overall trends and regions where these factors had a significant effect were identified, and the results visualized. Across the entire innominate bone, the mean loss of density was found to be 1.6 mg/cc per year, with several specific areas (pubic body, iliac fossa, posterior ilium, and anterior inferior iliac spine for example) showing significant rates of loss up to three times greater than the rest of the bone. Areas significantly affected by sex included the posterior pubic root, anterior aspect of the pubic body, and iliac crest. Despite overall trends of attenuation, there remains significant variability between individuals. This supports the need to further explore subject-specific planning tools for pelvic fracture repair. Statement of clinical significance: Bone density changes across the innominate bone due to age and sex tend to vary between individuals, although consistent effects were seen at specific regions. This information may help in surgical planning of unstable fracture repairs.
Topics: Adolescent; Adult; Aged; Aged, 80 and over; Aging; Bone Density; Cortical Bone; Female; Humans; Male; Middle Aged; Pelvic Bones; Retrospective Studies; Sex Characteristics; Tomography, X-Ray Computed; Young Adult
PubMed: 32617998
DOI: 10.1002/jor.24792 -
The Bone & Joint Journal Nov 2014A pelvic discontinuity occurs when the superior and inferior parts of the hemi-pelvis are no longer connected, which is difficult to manage when associated with a failed... (Review)
Review
A pelvic discontinuity occurs when the superior and inferior parts of the hemi-pelvis are no longer connected, which is difficult to manage when associated with a failed total hip replacement. Chronic pelvic discontinuity is found in 0.9% to 2.1% of hip revision cases with risk factors including severe pelvic bone loss, female gender, prior pelvic radiation and rheumatoid arthritis. Common treatment options include: pelvic plating with allograft, cage reconstruction, custom triflange implants, and porous tantalum implants with modular augments. The optimal technique is dependent upon the degree of the discontinuity, the amount of available bone stock and the likelihood of achieving stable healing between the two segments. A method of treating pelvic discontinuity using porous tantalum components with a distraction technique that achieves both initial stability and subsequent long-term biological fixation is described.
Topics: Acetabulum; Arthroplasty, Replacement, Hip; Bone Resorption; Hip Joint; Hip Prosthesis; Humans; Pelvic Bones; Prosthesis Design; Prosthesis Failure; Reoperation
PubMed: 25381413
DOI: 10.1302/0301-620X.96B11.34316