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Southern Medical Journal Apr 2010
Topics: Adult; Female; Humans; Hysterectomy; Magnetic Resonance Imaging; Pelvis; Splenic Rupture; Splenosis; Ultrasonography
PubMed: 20224500
DOI: 10.1097/SMJ.0b013e3181d3930a -
Gait & Posture Jan 2014Transverse plane pelvis rotations during walking may be regarded as the "first determinant of gait". This would assume that pelvis rotations increase step length, and...
Transverse plane pelvis rotations during walking may be regarded as the "first determinant of gait". This would assume that pelvis rotations increase step length, and thereby reduce the vertical movements of the centre of mass-"the pelvic step". We analysed the pelvic step using 20 healthy young male subjects, walking on a treadmill at 1-5 km/h, with normal or big steps. Step length, pelvis rotation amplitude, leg-pelvis relative phase, and the contribution of pelvis rotation to step length were calculated. When speed increased in normal walking, pelvis rotation changed from more out-of-phase to in-phase with the upper leg. Consequently, the contribution of pelvis rotation to step length was negative at lower speeds, switching to positive at 3 km/h. With big steps, leg and pelvis were more in-phase, and the contribution of pelvis rotation to step length was always positive, and relatively large. Still, the overall contribution of pelvis rotations to step length was small, less than 3%. Regression analysis revealed that leg-pelvis relative phase predicted about 60% of the variance of this contribution. The results of the present study suggest that, during normal slow walking, pelvis rotations increase, rather than decrease, the vertical movements of the centre of mass. With large steps, this does not happen, because leg and pelvis are in-phase at all speeds. Finally, it has been suggested that patients with hip flexion limitation may use larger pelvis rotations to increase step length. This, however, may only work as long as the pelvis rotates in-phase with the leg.
Topics: Adult; Biomechanical Phenomena; Exercise Test; Gait; Healthy Volunteers; Humans; Male; Movement; Pelvis; Rotation; Walking; Young Adult
PubMed: 23830524
DOI: 10.1016/j.gaitpost.2013.06.006 -
Journal of Clinical Ultrasound : JCU Nov 2017Accessory spleens are congenital foci of healthy splenic tissue that are separate from the main body of the spleen. They occur in 10-30% of individuals; a wandering...
Accessory spleens are congenital foci of healthy splenic tissue that are separate from the main body of the spleen. They occur in 10-30% of individuals; a wandering accessory spleen located in the pelvis is uncommon. Most patients are asymptomatic. We describe the case of a female adolescent presenting with acute abdominal pain who had a pelvic accessory spleen that mimicked an adnexal mass. © 2017 Wiley Periodicals, Inc. J Clin Ultrasound 45:600-602, 2017.
Topics: Abdominal Pain; Adolescent; Diagnosis, Differential; Female; Humans; Pelvis; Spleen; Splenic Diseases; Ultrasonography
PubMed: 28186623
DOI: 10.1002/jcu.22448 -
Journal of Pediatric Orthopedics Apr 2023Apophyseal avulsion fractures of the pelvis and hip are common injuries in adolescent athletes. However, high volume comparative studies elucidating the spectrum of...
BACKGROUND
Apophyseal avulsion fractures of the pelvis and hip are common injuries in adolescent athletes. However, high volume comparative studies elucidating the spectrum of injuries are largely absent from the literature. The current study provides a comprehensive analysis of demographic, anatomic, pathophysiological, clinical, and athletic-related variables associated with such injuries in an extensive population of affected adolescents.
METHODS
A retrospective review was performed of records of patients presenting to a single tertiary care pediatric hospital between January 1, 2005, and July 31, 2020, collecting variables including patient sex, age, body mass index, fracture location, injury mechanism, sport at the time of injury, and duration of prodromal symptoms.
RESULTS
Seven hundred nineteen fractures were identified in 709 patients. The average patient age was 14.6, and 78% of the fractures occurred in male patients. The anterior inferior iliac spine (33.4%), anterior superior iliac spine (30.5%), and ischial tuberosity (19.4%) were the most common fracture sites. The most common injury mechanisms were running (27.8%), kicking (26.7%), and falls (8.8%). The most common sports at the time of injury were soccer (38.1%), football (11.2%), and baseball (10.5%). Fracture site was significantly associated with patient sex, age, body mass index, laterality, mechanism, sport, time from injury, and presence of prodromal symptoms. The annual volume of pelvic avulsion fractures treated at the institution increased significantly from n=17 in 2005 to n=75 in 2019.
CONCLUSIONS
Adolescent pelvic and hip avulsion fractures occur during a narrow window of age and skeletal maturation and are frequently sustained during sporting activities. Each fracture location is associated with certain demographic, mechanistic, and patient-specific characteristics. The associations between fracture site and patient-specific or injury-specific variables offer insights into the pathophysiology and possible underlying biomechanical risk factors that contribute to these injuries.
LEVEL OF EVIDENCE
This is a level III retrospective study.
Topics: Humans; Male; Adolescent; Child; Fractures, Avulsion; Retrospective Studies; Prodromal Symptoms; Fractures, Bone; Hip Fractures; Ischium; Pelvis; Athletic Injuries
PubMed: 36727766
DOI: 10.1097/BPO.0000000000002355 -
African Journal of Reproductive Health Jun 2011Hydatid cyst is a parasitic human infection which is endemic in North Africa. It is more frequently localized in the liver and the lung. Involvement of others sites is...
Hydatid cyst is a parasitic human infection which is endemic in North Africa. It is more frequently localized in the liver and the lung. Involvement of others sites is usually secondary to these primary localizations. We report 2 exceptional cases of primary pelvic hydatid cyst diagnosed respectively in a 37-year-old and in a 48-year-old women. These cases will focus on the different characteristics of the infection, and the benefit of including epidemiologic arguments in using the diagnostical approach of adnexal masses.
Topics: Adnexa Uteri; Adnexal Diseases; Adult; Diagnosis, Differential; Disease Reservoirs; Echinococcosis; Female; Gynecologic Surgical Procedures; Humans; Middle Aged; Pelvis; Pregnancy; Tomography, X-Ray Computed; Treatment Outcome; Ultrasonography
PubMed: 22590903
DOI: No ID Found -
The Journal of Surgical Research Dec 2018Objective criteria to predict difficult pelvic dissection with prognostic significance are lacking. Previous studies have focused on predicting intraoperative conversion...
BACKGROUND
Objective criteria to predict difficult pelvic dissection with prognostic significance are lacking. Previous studies have focused on predicting intraoperative conversion and not evaluated factors specific to pelvic surgery. We aimed to develop an objective, prognostic, preoperative assessment to predict difficult pelvic dissections and clinical outcomes. Such a model is much needed, may facilitate objective comparisons between rectal cancer centers, or may serve as a stratification variable in clinical trials.
MATERIALS AND METHODS
Patients who underwent low anterior resection or abdominoperineal resection for rectal cancer within 10 cm of the anal verge (2009-2014) were retrospectively analyzed. Procedures were categorized into "routine" or "difficult" based on predefined criteria. All patients underwent 14 measurements on preoperative imaging. Outcomes were compared between the two groups. Stepwise multivariate logistic regression was used to develop the prediction model, which was validated in an independent data set.
RESULTS
Of the 280 patients analyzed, 80 fulfilled the inclusion criteria. Baseline characteristics were similar except for more males having a "difficult" pelvis. "Difficult" patients were significantly more likely to have a narrower pelvis, smaller pelvic volumes, a longer pelvis, more curved sacrum, and more acute anorectal angle. Difficult cases correlated significantly with higher blood loss, hospital costs, longer operative time, and length of stay. A practical model to predict difficult pelvic dissections was created and included male gender, previous radiation, and length from promontory to pelvic floor > 130 mm. Model validation was performed in 40 patients from an independent data set.
CONCLUSIONS
An objective, validated model that predicts a difficult pelvic dissection and associated worse clinical outcome is possible.
Topics: Adult; Aged; Body Mass Index; Dissection; Female; Humans; Logistic Models; Male; Middle Aged; Pelvis; Rectal Neoplasms
PubMed: 30463711
DOI: 10.1016/j.jss.2018.05.042 -
Journal of Biomechanics Oct 2020When skin-markers trajectories are used in human movement analysis, compensating for their relative movement with respect to the underlying bone (soft tissue artefact,...
When skin-markers trajectories are used in human movement analysis, compensating for their relative movement with respect to the underlying bone (soft tissue artefact, STA) is essential for accurate bone-pose estimation; information about the artefact is required in the form of a mathematical model. Such model, not available for pelvic artefacts, could allow pelvic STA compensation in routine gait analysis by embedding it in skeletal kinematics estimators and developing ad-hoc optimization problems for the estimate of subject-specific model parameters. It was developed as driven by adjacent body segment kinematics. Model architecture feasibility was tested; its compensation effectiveness was assessed evaluating the error in pelvic orientation after removing the modelled artefact from the measured one. Five volunteers with a wide body mass range (BMI: 22-37) underwent MRI scans to reconstruct subject-specific pelvic digital bone models. Multiple anatomical calibrations performed in different static postures, as occurring during walking and star-arc movements, registering the bone-models with points digitized through stereophotogrammetry over pelvic bony prominences, allowed to define the relevant poses of a pelvis-embedded anatomical coordinate system. Such approach allowed to measure STAs over several pelvic anatomical landmarks, for each posture and subject. Model parameters were estimated by minimizing the least squares difference between measured and modelled STAs. The measured STAs were appropriately modelled with subject-specific calibrations, both in terms of shape (correlation coefficient: median [inter-quartile-range]: 0.72 [0.36]) and amplitude (root mean square residual: 3.0 [3.2] mm). Consequently, the overall error in pelvic orientation vector (5.1 [4.4] deg) was reduced after removing the modelled artefacts (2.5 [1.9] deg).
Topics: Artifacts; Biomechanical Phenomena; Humans; Models, Biological; Movement; Pelvis
PubMed: 32891015
DOI: 10.1016/j.jbiomech.2020.109998 -
Ceska Gynekologie 2020To describe a case of coincidental finding of splenosis during gynecological laparoscopic surgery.
OBJECTIVE
To describe a case of coincidental finding of splenosis during gynecological laparoscopic surgery.
DESIGN
Case report.
SETTING
Department of gynecology and obstetrics, Hospital of Frýdek-Místek.
CASE REPORT
We describe the case of coincidental perioperative finding of pelvic tumorous mass that was later histologicaly verified as accsessory spleen or splenosis.
CONCLUSION
Ectopic spleen is mostly random finding with no symptoms observed. Rarely it can cause pelvic pain or mimick adnexal malignity or endometriosis. It is neccesery to keep this rare diagnosis in mind, mainly at patients with splenic trauma or splenectomy in their medical history to preserve immunological function of this splenic tissue.
Topics: Diagnosis, Differential; Female; Gynecologic Surgical Procedures; Humans; Pelvis; Splenectomy; Splenosis
PubMed: 33562971
DOI: No ID Found -
Anthropologischer Anzeiger; Bericht... Jul 2012The objective of this paper is: to estimate the body mass of the skeletons with the mechanical method (femoral head body mass estimation method--FH) and non-mechanical...
The objective of this paper is: to estimate the body mass of the skeletons with the mechanical method (femoral head body mass estimation method--FH) and non-mechanical method (stature/living bi-iliac breadth body mass estimation method--ST/LBIB); to compare the reliability and potential use of results obtained with both methods. The material (46 skeletons, 26 males, 20 females) used in the study came from the medieval burial ground in Cedynia, Poland. Body mass reconstruction according to non-mechanical method was made using equations proposed by Ruff et al. (2005). Body mass estimation based on the mechanical method was calculated using formulas proposed by Ruff et al. (1995). In the mechanical body mass reconstruction method, femoral superoinferior breadth was used. Reconstruction of body weight using the non-mechanical method was based on maximum pelvic breadth and reconstructed body height. The correlation between bi-iliac breadth and femoral head measurements and the correlation between femoral head and reconstructed body height were also calculated. The significance of differences between the body mass of male and female individuals was tested with the Mann-Whitney U-test. The significance of differences between body mass values obtained with the mechanical (FH) and the non-mechanical method (ST/ LBIB) was tested using Pearson's correlation. The same test was used for the calculation of the relationship between bi-iliac breadth and femoral head measurements and between femoral head and reconstructed body height. In contrast to females, in males there is no statistically significant correlation between body mass estimated with the mechanical method (FH) and the non-mechanical method (ST/LBIB). In both sexes there was not statistically significant correlation between bi-iliac breadth and femoral head measurements. Only in the females group the correlation between femoral head and reconstructed body height was statistically significant. It is worth to continue the research. The obtained results would be a valuable contribution to the knowledge on body mass reconstruction methods.
Topics: Adult; Anthropology, Physical; Biomechanical Phenomena; Body Weights and Measures; Female; Femur; Humans; Male; Pelvis; Statistics, Nonparametric
PubMed: 22928353
DOI: 10.1127/0003-5548/2012/0179 -
Medicine Nov 2022Aggressive angiomyxoma (AAM) is a rare mesenchymal tumor primarily involving the lower genital tract of reproductive females. It often shares pathologic morphology with... (Review)
Review
RATIONALE
Aggressive angiomyxoma (AAM) is a rare mesenchymal tumor primarily involving the lower genital tract of reproductive females. It often shares pathologic morphology with other mesenchymal lesions, which result in diagnostic difficulties for pathologists.
PATIENT CONCERNS AND DIAGNOSES
We described the case of a 32-year-old female presenting with a pelvic mass. Imaging examination showed a "swirling sign" within the mass. The mass was 10.2 × 10 × 7.7 cm, located in the right front of the uterus, with unclear demarcation from the surrounding organs and tissues. The gross appearance was grayish brown with a solid section and a myxedematous cut surface. Microscopically, it was a mesenchymal tumor with a presence of perivascular smooth muscle fibers radiating from the blood vessel and an infiltrative growth pattern. The pelvic AAM was diagnosed based on clinicopathologic and imaging features.
INTERVENTIONS AND OUTCOMES
A surgery with local excision of the mass was performed. The patient experienced 1 relapse during 2-year follow-up and underwent the radiation therapy.
LESSONS
When the pathological morphology of AAM overlaps with other mesenchymal lesions, the comprehensive understanding of tumor clinicopathological characteristics combined with imaging features is important for the accurate diagnosis of AAM.
Topics: Humans; Female; Adult; Neoplasm Recurrence, Local; Myxoma; Pelvis
PubMed: 36401457
DOI: 10.1097/MD.0000000000031617