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L Larue, G Keromnes, A Massari, C Roche, D Bouret, N G Cassuto, J P Ayel
OBJECTIVES: Identify, define and validate through statistical analysis the anatomical causes of difficult embryo transfers (ET). MATERIALS AND METHODS: This observational study, carried out in 306 IVF candidates, compared the frequency of anatomical anomalies of the uterus and cervix in women who underwent an easy ET with that in women who underwent a difficult ET. Anatomical anomalies were detected during an assessment of the cervix and uterus including transvaginal ultrasound, hysteroscopy and a mock transfer...
October 17, 2016: Journal de Gynécologie, Obstétrique et Biologie de la Reproduction
Seyed Ali Hashemi, Javad Dehghani, Amir Reza Vosoughi
OBJECTIVE: Diagnosis of acetabular retroversion based on crossover sign in the anteroposterior radiograph of the hip joint is well described. Accuracy of the crossover sign to identify global retroversion of the acetabulum in comparison to version of the acetabulum in reconstructed three-dimensional computed tomography (3D CT) scan of the hip was the aim of this study. MATERIALS AND METHODS: X-rays of 500 hips were assessed regarding presence of crossover sign and its location in the upper, middle, or lower third of the acetabulum...
October 18, 2016: Skeletal Radiology
Joel Wells, Jeffrey J Nepple, Karla Crook, James R Ross, Asheesh Bedi, Perry Schoenecker, John C Clohisy
BACKGROUND: Hip dysplasia represents a spectrum of complex deformities on both sides of the joint. Although many studies have described the acetabular side of the deformity, to our knowledge, little is known about the three-dimensional (3-D) head and neck offset differences of the femora of dysplastic hips. A thorough knowledge of proximal femoral anatomy is important to prevent potential impingement and improve results after acetabular reorientation. QUESTIONS/PURPOSES: (1) Are there common proximal femoral characteristics in patients with symptomatic hip dysplasia undergoing periacetabular osteotomy (PAO)? (2) Where is the location of maximal femoral head and neck offset deformity in hip dysplasia? (3) Do certain subgroups of dysplastic hips more commonly have cam-type femoral morphology? (4) Is there a relationship between hip ROM as well as impingement testing and 3-D head and neck offset deformity? METHODS: Using our hip preservation database, 153 hips (148 patients) underwent PAO from October 2013 to July 2015...
October 17, 2016: Clinical Orthopaedics and related Research
Daniel S Hill, Kuntal Patel, Deepak Herlekar
BACKGROUND: Highly cross-linked polyethylene in total hip arthroplasty (THA) has been shown to decrease wear rate compared with a conventional polyethylene liner. However, it has also been reported that the manufacturing processes can cause early failure of the implant. CASE: We describe early catastrophic failure at <4 years following primary THA surgery of a PINNACLE MARATHON® polyethylene acetabular liner resulting from a malaligned PINNACLE DUOFIX HA® acetabular shell with resultant point loading...
October 13, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Alexandre Terrier, Valérie Parvex, Hannes A Rüdiger
INTRODUCTION: In total hip arthroplasty, cup medialisation with compensatory increase of femoral offset has been proposed to increase the moment arms of abductor muscles. However, this technique is associated with a loss of acetabular bone stock. Previous data indicates that the potential benefit is not constant among patients and is likely related to patient anatomy. METHOD: Therefore, to be able to select patients who would benefit most from this technique, we measured several anatomical parameters of the pelvis and femur in 15 patients; and evaluated correlations between them and the changes of moment arms associated with cup medialisation...
October 8, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Ran Schwarzkopf, Erik Schnaser, Taiki Nozaki, Yasuhito Kaneko, Michael J Gillman
INTRODUCTION: Patient-specific implants and instruments (PSI) have been used in both knee and shoulder replacements due to the perceived benefits of improved surgical accuracy and efficiency. The proposed benefits of using a PSI in total hip arthroplasty (THA) are numerous and include reduction of operative time and improved mechanical and anatomical alignment leading to increased implant longevity, increased stability, and clinical outcomes. We describe a novel patient-specific instrumentation and a surgical method that may improve directed resection of acetabular bone and accurate cup placement during THA...
October 6, 2016: Surgical Technology International
Bauke W Kooistra, W Jaap Willems, Eelke Lemmens, Bas P Hartel, Michel P J van den Bekerom, Derek F P van Deurzen
BACKGROUND: Compared with total shoulder arthroplasty (TSA), total shoulder surface replacement (TSSR) may offer the advantage of preservation of bone stock and shorter surgical time, possibly at the expense of glenoid component positioning and increasing lateral glenohumeral offset. We hypothesized that in patients treated for osteoarthritis with a sufficient rotator cuff, TSA and TSSR patients have comparable functional outcome, glenoid component version, and lateral glenohumeral offset...
October 7, 2016: Journal of Shoulder and Elbow Surgery
Jing-Xin Zhao, Xiu-Yun Su, Ruo-Xiu Xiao, Zhe Zhao, Li-Hai Zhang, Li-Cheng Zhang, Pei-Fu Tang
We established a mathematical method to precisely calculate the radiographic anteversion (RA) and radiographic inclination (RI) angles of the acetabular cup based on anterior-posterior (AP) pelvic radiographs after total hip arthroplasty. Using Mathematica software, a mathematical model for an oblique cone was established to simulate how AP pelvic radiographs are obtained and to address the relationship between the two-dimensional and three-dimensional geometry of the opening circle of the cup. In this model, the vertex was the X-ray beam source, and the generatrix was the ellipse in radiographs projected from the opening circle of the acetabular cup...
October 5, 2016: Medical Engineering & Physics
T Schwarz, M Weber, M Wörner, T Renkawitz, J Grifka, B Craiovan
PURPOSE: Accurate assessment of cup orientation on postoperative radiographs is essential for evaluating outcome after THA. However, accuracy is impeded by the deviation of the central X-ray beam in relation to the cup and the impossibility of measuring retroversion on standard pelvic radiographs. METHOD: In an experimental trial, we built an artificial cup holder enabling the setting of different angles of anatomical anteversion and inclination. Twelve different cup orientations were investigated by three examiners...
October 6, 2016: International Journal of Computer Assisted Radiology and Surgery
Chesley F Durgin Iii, E Meade Spratley, Jibanananda Satpathy, William A Jiranek, Jennifer S Wayne
Identifying native femoral version from proximal femoral landmarks would be of benefit both for preoperative assessment as well as intraoperatively. To identify potential markers for femoral anteversion, an empirical framework was developed for orientation-independent analysis of the proximal femur from pelvic CT to allow for segmentation of the proximal femur into five constituent regions: Femoral head, femoral neck, greater trochanter, lesser trochanter and femoral shaft. The framework is based on the identification of differences in the radius of curvature at anatomic zones of transition between regions of the proximal femur, followed by non-linear geometric shape fitting...
October 5, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
Antonia F Chen, Chi-Lung Chen, Sara Low, Wei-Ming Lin, Karthikeyan Chinnakkannu, Fabio R Orozco, Alvin C Ong, Zachary D Post
BACKGROUND: Surgical approach is known as a risk factor that influences cup malposition while performing total hip arthroplasty (THA). However, no study has been conducted comparing cup positioning between the supine direct anterior (DA) and supine direct lateral (DL) THA approaches. QUESTIONS/PURPOSES: (1) Is there a difference in acetabular cup positioning between supine DA and supine DL THA approaches? (2) Are there differences in complications based on acetabular cup positioning between the two approaches? METHODS: From 2012 to 2014, 186 patients who underwent primary THAs using DA approach were matched with 186 patients using DL approach by body mass index, age, and gender...
October 2016: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
Satoru Tamura, Shunsaku Nishihara, Masaki Takao, Takashi Sakai, Hidenobu Miki, Nobuhiko Sugano
BACKGROUND: Functional anteversion and inclination of the cup change as the pelvic sagittal inclination (PSI) changes. The purposes of this study were to investigate the chronological changes of PSI during a 10-year follow-up period after total hip arthroplasty (THA) and to report the characteristics of patients who showed a greater than 10° change in the PSI from the supine to the standing position. METHODS: The subjects were 70 patients who were followed up for 10 years after THA...
September 9, 2016: Journal of Arthroplasty
Bruno Dohin, Elie Haddad, Hassan Al Khoury Salem, Mohamed Merhez Kilani
OBJECTIVE: Hip internal rotation (HIR) during gait is one of the main functional disorders related to cerebral palsy (CP) in children. Most of the procedures proposed rotational osteotomy of the femur (FRO), (and/or tibia). However, multilevel surgery (SEMLS) including bone procedure, implicates more difficult and longer rehabilitation. When bone deformity is moderate, the authors hypothesized that FRO could be avoided. They developed a soft tissues procedure to improve HIR. The aim of the study was assessment of the procedure...
September 2016: Annals of Physical and Rehabilitation Medicine
Michael Worlicek, Markus Weber, Benjamin Craiovan, Michael Wörner, Florian Völlner, Hans R Springorum, Joachim Grifka, Tobias Renkawitz
BACKROUND: Improper femoral and acetabular component positioning can be associated with instability, impingement, component wear and finally patient dissatisfaction in total hip arthroplasty (THA). The concept of "femur first"/"combined anteversion", incorporates various aspects of performing a functional optimization of the prosthetic stem and cup position of the stem relative to the cup intraoperatively. In the present study we asked two questions: (1) Do native femoral anteversion and anteversion of the implant correlate? (2) Do anteversion of the final broach and implant anteversion correlate? METHODS: In a secondary analysis of a prospective controlled trial, a subgroup of 55 patients, who underwent computer-assisted, cementless THA with a straight, tapered stem through an anterolateral, minimally invasive (MIS) approach in a lateral decubitus position were examined retrospectivly...
2016: BMC Musculoskeletal Disorders
Jeffrey B Stambough, Lauren Davis, Deborah A Szymanski, June C Smith, Perry L Schoenecker, J Eric Gordon
BACKGROUND: Excessive femoral anteversion is a developmental condition that can become symptomatic into adolescence and manifest as anterior knee pain, tripping, and or problems with sports. Femoral derotational osteotomy about an antegrade intramedullary nail (IMN) is an accepted option to treat this condition. This is the first report of the clinical and functional outcomes of treatment of excessive anteversion with femoral derotational osteotomy stabilized with an IMN. METHODS: We prospectively enrolled 28 consecutive patients between 2013 and 2014 who underwent derotational osteotomy...
September 15, 2016: Journal of Pediatric Orthopedics
Anita Sadhu, Denis Nam, Benjamin R Coobs, Toby N Barrack, Ryan M Nunley, Robert L Barrack
BACKGROUND: Recently, the importance of acetabular component positioning in the Lewinnek "safe zone" in preventing prosthetic dislocation following total hip arthroplasty (THA) has been questioned. The purpose of this study was to determine the proportion of acetabular components within the Lewinnek safe zone between primary and revision THAs that have sustained a dislocation vs matched controls without a dislocation event. METHODS: This was a retrospective, institutional review board-approved investigation of THAs performed at our institution or referred to our institution between 1997 and 2013...
August 20, 2016: Journal of Arthroplasty
Shogo Uota, Anh-Dung Nguyen, Naoko Aminaka, Yohei Shimokochi
CONTEXT: Excessive knee valgus and tibial external rotation relative to the femur during weight bearing motions such as jump landing reportedly increases the risk of developing chronic knee pain such as patellofemoral pain. Excessive deviations from normal ranges of several static lower extremity alignment measures and dynamic hip motions may also increase the risks for patellofemoral pain. OBJECTIVE: To determine the relationship between lower extremity alignments and hip motions to frontal and transverse plane knee motions during double-leg landings...
September 6, 2016: Journal of Sport Rehabilitation
YiQiang Li, YuanZhong Liu, QingHe Zhou, WeiDong Chen, JingChun Li, LingJia Yu, HongWen Xu, DengHui Xie
There are no data regarding the acetabular orientation on magnetic resonance imaging (MRI); this study investigates the changes of acetabular orientation with age in normal Chinese children.We retrospectively analyzed the medical records of children who underwent hip MRI examination at our hospital from January 2009 to December 2015. A total of 180 patients with normal MRI reading of the hip joints were included and were divided into 14 groups according to age: from 6 months of age and then for each year from 1 to 16 years...
September 2016: Medicine (Baltimore)
Takashi Yoshida, Wook-Cheol Kim, Atsushi Nishida, Yoshinobu Oka, Toshiharu Shirai, Kazuya Ikoma, Keiichiro Ueshima, Hiroyoshi Fujiwara, Toshikazu Kubo
OBJECTIVE: This study aimed to assess acetabular anteversion angle (AAA) from the early stage of Perthes disease to adolescence. METHODS: Twenty-five patients treated conservatively were examined. Changes in AAA from initial to final measurement were compared between the two groups (G-group: Stulberg classes I and II; P-group: classes III and IV). RESULTS: In the G-group, AAA decreased significantly in the affected hip compared with the unaffected hip, whereas AAA decreased in both hips in the P-group...
December 2016: Journal of Orthopaedics
Shogo Uota, Anh-Dung Nguyen, Naoko Aminaka, Yohei Shimokochi
CONTEXT: Excessive knee valgus and tibial external rotation relative to the femur during weight bearing motions such as jump landing reportedly increases the risk of developing chronic knee pain such as patellofemoral pain. Excessive deviations from normal ranges of several static lower extremity alignment measures and dynamic hip motions may also increase the risks for patellofemoral pain. OBJECTIVE: To determine the relationship between lower extremity alignments and hip motions to frontal and transverse plane knee motions during double-leg landings...
September 6, 2016: Journal of Sport Rehabilitation
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