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Femoral anteversion

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https://www.readbyqxmd.com/read/28715039/erratum-to-computed-tomographic-evaluation-of-femoral-and-tibial-conformation-in-english-staffordshire-bull-terriers-with-and-without-congenital-medial-patellar-luxation
#1
Mark Newman, Katja Voss
OBJECTIVE: To compare hindlimb conformation of English Staffordshire Bull Terriers with and without medial patellar luxation using computed tomography. METHODS: Hindlimb computed tomography (CT) was performed on six English Staffordshire Bull Terriers with grade II or III medial patellar luxation, and six without medial patellar luxation. Inclination angle, femoral condyle trochanteric angle, anteversion angle (AA), distal anteversion angle (DAA), proximal anteversion angle (PAA), femoral varus angle (FVA), tibial valgus angle (TVA), and tibial torsion angle (TTA) were measured...
July 10, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28712801/the-effect-of-pelvic-tilt-and-femoral-head-size-on-hip-range-of-motion-to-impingement
#2
Thomas F McCarthy, Jim Nevelos, Randa K Elmallah, Morad Chughtai, Anton Khlopas, Vincent Alipit, Timothy C Wagner, Michael A Mont
BACKGROUND: About 50%-70% of dislocators have cups placed within so-called "safe zones." It has been postulated that factors such as femoral head size and pelvic tilt, obliquity, or rotation may influence postoperative stability. Therefore, we assessed varying degrees of pelvic tilt and head sizes on the range of motion (ROM) to impingement. METHODS: A hip simulator was used to import models of 10 subjects who performed object pickup, squatting, and low-chair rising...
June 15, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28697862/acetabular-and-femoral-anteversions-in-standing-position-are-outside-the-proposed-safe-zone-after-total-hip-arthroplasty
#3
Jean Y Lazennec, Frederic Thauron, Christopher B Robbins, Aidin E Pour
BACKGROUND: Although most hip dislocations occur in either standing or sitting position, the safe zone for implant position is defined for the supine position. Our goal was to determine preoperative and postoperative pelvis and hip orientations and whether the safe zone defined in supine position can be used to assess standing radiographs. METHODS: Preoperative and postoperative three-dimensional EOS images were assessed in 66 total hip arthroplasty patients. None of the patients had dislocation within the follow-up period (12-36 months)...
June 20, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28688017/what-factors-predict-conversion-to-tha-after-arthroscopy
#4
John M Redmond, Asheesh Gupta, Kevin Dunne, Ammar Humayun, Leslie C Yuen, Benjamin G Domb
BACKGROUND: Failure of hip preservation to alleviate symptoms potentially subjects the patient to reoperation or conversion surgery to THA, adding recovery time, risk, and cost. A risk calculator using an algorithm that can predict the likelihood that a patient who undergoes arthroscopic hip surgery will undergo THA within 2 years would be helpful, but to our knowledge, no such tool exists. QUESTIONS: (1) Are there preoperative and intraoperative variables at the time of hip arthroscopy associated with subsequent conversion to THA? (2) Can these variables be used to develop a predictive tool for conversion to THA? MATERIALS AND METHODS: All patients undergoing arthroscopy from January 2009 through December 2011 were registered in our longitudinal database...
July 7, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28675371/proximal-femoral-derotation-osteotomy-for-idiopathic-excessive-femoral-anteversion-and-intoeing-gait
#5
Gohar Naqvi, Kuldeep Stohr, Andreas Rehm
AIM: The purpose of this study is to assess the symptoms caused by excessive femoral anteversion and the outcomes of femoral derotation osteotomy. METHODS: We reviewed data on patients who underwent proximal femoral derotation osteotomy for symptomatic intoeing gait caused by femoral anteversion. Only symptomatic patients were considered for corrective derotation osteotomy. Degree of femoral anteversion was confirmed on computed tomography (CT) scan. RESULTS: Thirty-five extremities were operated in 21 patients with an average age of 13...
2017: SICOT-J
https://www.readbyqxmd.com/read/28668738/correlation-of-the-torsion-values-measured-by-rotational-profile-kinematics-and-ct-study-in-cp-patients
#6
Ha Yong Kim, Yong Han Cha, Young Sub Chun, Hyuck Soo Shin
BACKGROUND: The purpose of study was to analyze correlations between bony torsions measured by Staheli's rotation profile, computed tomography (CT) torsional study, and gait analysis in patients with cerebral palsy (CP). MATERIALS & METHOD: The study group comprised of 26 children with CP (spastic diplegia, Gross Motor Function Classification System (GMFCS) 1-2, mean age 12.6 years) with torsional deformities. All subjects were assessed by examining: 1) rotational profile [internal rotation (IR) and external rotation (ER)], 2) CT torsional profile [femoral anteversion (FAV) and tibial torsion (TT)], and 3) gait analysis [mean hip rotation (HR) and mean knee rotation (KR)]...
June 22, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28660621/changes-in-hip-abductor-moment-3-or-more-years-after-femoral-derotation-osteotomy-among-individuals-with-cerebral-palsy
#7
Elizabeth R Boyer, Tom F Novacheck, Michael H Schwartz
AIM: To examine the effect of femoral derotation osteotomy (FDO) on dimensionless hip abductor moment during gait in children with cerebral palsy. METHODS: We retrospectively analyzed data from independent ambulators within our database. Postoperative visits 1 year (short-term) and at least 3 years (mid-term) were analyzed. We estimated the coronal plane hip abductor moment arm based on musculoskeletal modeling that accounted for anteversion and hip rotation. RESULTS: There were 140 individuals with a short-term analysis (77 males, 63 females; age at surgery 9y 11mo [range 4y 5mo-17y 5mo]) and 29 with mid-term analysis (15 males, 14 females; age at surgery 8y 7mo [range 4y 5mo-13y 1mo])...
June 29, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28639848/intraoperative-correction-of-femoral-rotational-deformity-using-a-conventional-navigation-system-and-a-smartphone-a-novel-technique
#8
Jia-Qing Cao, Jing-Huan Huang, Ting Yuan, Wei-Tao Jia, Hong Gao
The intraoperatively rotational control of femoral shaft fractures treated with a closed intramedullary interlocking nailing is a challenging problem. A novel surgical technique that includes respective insertions of guidewires into the proximal and distal femur under the guidance of a 2-dimensional fluoroscopy-based navigation system and the measurements of the intersection angle subtended by the proximal and distal guidewires with the smartphone positional software has been designed to provide intraoperatively quantitative parameters of femoral rotation deformation...
June 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28639152/influence-of-muscle-groups-activation-on-proximal-femoral-growth-tendency
#9
Priti Yadav, Sandra J Shefelbine, Eva Pontén, Elena M Gutierrez-Farewik
Muscle and joint contact force influence stresses at the proximal growth plate of the femur and thus bone growth, affecting the neck shaft angle (NSA) and femoral anteversion (FA). This study aims to illustrate how different muscle groups' activation during gait affects NSA and FA development in able-bodied children. Subject-specific femur models were developed for three able-bodied children (ages 6, 7, and 11 years) using magnetic resonance images. Contributions of different muscle groups-hip flexors, hip extensors, hip adductors, hip abductors, and knee extensors-to overall hip contact force were computed...
June 22, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28631289/three-dimensional-orientation-of-the-acetabulum
#10
Daisuke Suzuki, Satoshi Nagoya, Hiroyuki Takashima, Kenji Tateda
This study was designed specifically to determine the normal acetabular orientation and femoral head covering, and whether these are affected by age or sex. Computed tomographic images of normal Japanese hip joints were used (males 60, females 60; mean age 48.3 years, range 15-79 years). Male and female age profiles were matched. The reconstructed 3D pelvic images were aligned in the anatomical pelvic coordinate system. The acetabular orientation angles and femoral covering angles were measured in the sagittal, coronal, and horizontal planes...
June 20, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28629942/can-a-target-zone-safer-than-lewinnek-s-safe-zone-be-defined-to-prevent-instability-of-total-hip-arthroplasties-case-control-study-of-56-dislocated-tha-and-93-matched-controls
#11
N Reina, S Putman, R Desmarchelier, E Sari Ali, P Chiron, M Ollivier, J Y Jenny, D Waast, C Mabit, E de Thomasson, C Schwartz, P Oger, L E Gayet, H Migaud, N Ramdane, M H Fessy
BACKGROUND: Various factors contribute to instability of total hip arthroplasty (THA), with implant orientation being a major contributor. We performed a case-control study with computed tomography (CT) data to determine whether: 1) orientation contributes to THA instability and 2) a safer target zone for stability than Lewinnek's classic safe zone can be defined. MATERIAL AND METHODS: We included prospectively 363 cases of THA dislocation that occurred during the calendar 2013 year in 24 participating hospitals...
June 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28574117/combined-anteversion-technique-in-total-hip-arthroplasty-for-crowe-iv-developmental-dysplasia-of-the-hip
#12
Biao Zhu, Changzheng Su, Yeteng He, Xingyu Chai, Zhen Li, Zhenyang Hou, Tengteng Lou, Xinfeng Yan
BACKGROUND: A high rate of postoperative dislocation in total hip arthroplasty (THA) for Crowe IV developmental dysplasia of the hip (DDH) has been reported, 1 of the main reasons being higher true acetabular anteversion. If the cup is fixed with normal anteversion, the anterior rim will be excessively exposed, which reduces the contact areas of the cup and bone, affects prosthesis stability, and leads to iliopsoas tendinitis and persistent hip pain after THA. The aim of this study was to demonstrate that when cup anteversion is larger, adjusting femoral anteversion to bring the combined anteversion (CA) into the "safe zone" might prevent dislocation...
May 27, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28521149/long-term-outcomes-of-external-femoral-derotation-osteotomies-in-children-with-cerebral-palsy
#13
Sylvia Õunpuu, Matthew Solomito, Katharine Bell, Kristan Pierz
External femoral derotation osteotomy (FDO) is an orthopaedic intervention to correct increased femoral anteversion and associated excessive internal hip rotation and internal foot progression during gait in children with cerebral palsy. The resulting functional issues may include clearance problems and hip abductor lever-arm dysfunction. The purpose of this study was to evaluate long-term gait outcomes of FDO. Twenty ambulatory patients (27 sides) with cerebral palsy who underwent pre-operative (P0) and a one year post-operative (P1) gait analysis as part of the standard of care had a second post-operative analysis (P2) approximately 11 years post-surgical intervention...
July 2017: Gait & Posture
https://www.readbyqxmd.com/read/28506299/developmental-hip-dysplasia-treated-by-total-hip-arthroplasty-using-a-cementless-wagner-cone-stem-in-young-adult-patients-with-a-small-physique
#14
Ping Zhen, Jun Liu, Hao Lu, Hui Chen, Xusheng Li, Shenghu Zhou
BACKGROUND: Developmental hip dysplasia (DDH) may lead to severe acetabular and femoral abnormalities that can render total hip arthroplasty (THA) challenging, especially in DDH patients with a small physique. Most conventional cemented or cementless femoral components are often difficult to implant in the narrow femoral canal and require slight version correction during surgery. The aim of this study was to present the mid-term results of THA in the treatment of DDH patients with a small physique using a cementless Wagner cone prosthesis (Zimmer®, US)...
May 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28474728/pelvic-limb-alignment-measured-by-computed-tomography-in-purebred-english-bulldogs-with-medial-patellar-luxation
#15
Filippo Lusetti, Andrea Bonardi, Chadi Eid, Anna Brandstetter de Belesini, Filippo Maria Martini
OBJECTIVES: The aim of the study was to describe the differences in pelvic limb alignment between healthy purebred English Bulldogs and those with medial patellar luxation through the measurement of femoral and tibial angles on computed tomography images in multiplanar reconstruction modality (MPR-CT). METHODS: Twenty-one purebred English Bulldogs were included and divided into two groups: one including healthy dogs (15 limbs) and the other including those with medial patellar luxation (24 limbs)...
May 10, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28471818/spectrum-of-diagnosis-and-disposition-of-patients-referred-to-a-pediatric-orthopaedic-center-for-a-diagnosis-of-intoeing
#16
Shawne Faulks, Kaitlyn Brown, John G Birch
BACKGROUND: Orthopaedic surgeons frequently evaluate otherwise healthy children for concern of intoed gait. Intoeing in otherwise healthy young children due to metatarsus adductus, internal tibial torsion, and increased femoral anteversion do not typically require orthopaedic treatment. This study reviewed the actual diagnosis, management, and disposition of patients referred to a pediatric orthopaedic specialty hospital for a diagnosis of intoeing; the efficacy of an Advanced Practice Provider (APP) assessment program to screen and triage patients with a primary complaint of intoeing; and parental satisfaction with that program...
May 3, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28451860/erratum-to-spinopelvic-parameter-changes-and-low-back-pain-improvement-due-to-femoral-neck-anteversion-in-patients-with-severe-unilateral-primary-hip-osteoarthritis-undergoing-total-hip-replacement
#17
Andrea Piazzolla, Giuseppe Solarino, Davide Bizzoca, Viola Montemurro, Pedro Berjano, Claudio Lamartina, Carlotta Martini, Biagio Moretti
No abstract text is available yet for this article.
April 28, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28438455/lesser-trochanter-size-on-plain-anteroposterior-radiographs-correlates-with-native-femoral-anteversion
#18
Michael C Worlicek, Michael L Wörner, Benjamin S Craiovan, Florian Zeman, Joachim Grifka, Tobias F Renkawitz, Markus Weber
BACKGROUND: Assessing femoral version in orthopedic surgery is important for preoperative planning of total hip arthroplasty, especially for recognizing excessive anteversion or retroversion. The present study addressed the following: (1) Is the position of the lesser trochanter correlated to the femoral neck axis? (2) If so, may femoral version be assessed by means of plain pelvic radiographs? METHODS: Three-dimensional computed tomography scans of 60 patients undergoing minimally invasive cement-free total hip arthroplasty were retrospectively analyzed, particularly with regard to the relation between the femoral neck axis and the lesser trochanter, the femoral version, and the size of the projected lesser trochanter in different rotational positions...
April 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28416826/-surgical-technique-and-early-clinical-outcomes-of-direct-anterior-approach-to-total-hip-arthroplasty
#19
M Lv, J Q Zhang, X S Wang, Y Huang, W Li, C Y Zhang
OBJECTIVE: To describe the surgical technique of direct anterior approach to total hip arthroplasty and to report the early clinical outcomes. METHODS: A series of 100 consecutive, unselected patients who had 116 primary total hip arthroplasty surgeries (16 bilateral) done through direct anterior approach from March 11 2015 to June 21 2016 was reviewed. There were 50 male patients and 50 female patients. The average patient age was 51 years, and the average body mass index was 24...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28413130/arthroscopic-treatment-of-labral-tears-of-the-hip-in-adolescents-patterns-of-clinical-presentation-intra-articular-derangements-radiological-associations-and-minimum-2-year-outcomes
#20
Sivashankar Chandrasekaran, Nader Darwish, Edwin O Chaharbakhshi, Parth Lodhia, Carlos Suarez-Ahedo, Benjamin G Domb
PURPOSE: To report on patterns of clinical presentation, intra-articular derangements, radiological associations, and minimum 2-year outcomes after hip arthroscopy (HA) in patients 18 years or younger. METHODS: This study was a retrospective case series on patients 18 years or younger who had undergone HA for labral tears that had failed nonoperative management from April 2008 to April 2013 with a minimum 2-year follow-up. Exclusion criteria were previous hip conditions or surgery...
April 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
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