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Femoral anteversion

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https://www.readbyqxmd.com/read/27913129/preoperative-planning-and-operative-techniques-of-the-shorter-tapered-stem-compared-to-the-metaphyseal-fit-stem-in-cementless-total-hip-arthroplasty
#1
Hiroshi Imai, Joji Miyawaki, Tomomi Kamada, Akira Maruishi, Jun Takeba, Hiromasa Miura
BACKGROUND: In order to prevent postoperative dislocation due to prosthetic impingement as a result of total hip arthroplasty (THA), the combined anteversion (CA) theory, which combines the anteversion of the femoral stem and the acetabular socket, has been revised in recent years. Particularly, it is necessary to keep CA within the target zone. METHODS: The aim of this study was to investigate whether postoperative CA can be kept within the target zone while using the operative technique which prepares the socket first in cementless THA, by estimating the anteversion of the metaphyseal fit stem or the shorter, tapered wedge stem using preoperative 3-dimensional computerized planning, and by adjusting the anteversion of the socket using a navigation system that considers CA...
November 10, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27902635/correlation-between-transverse-plan-kinematics-and-foot-progression-angle-in-children-with-spastic-diplegia
#2
Ana Presedo, Anne-Laure Simon, Cindy Mallet, Brice Ilharreborde, Keyvan Mazda, Georges-François Pennecot
In diplegic patients, the orientation of foot progression depends on multiple factors. We investigated the relationship between foot progression alignment, hip and pelvic rotations during gait, femoral anteversion, and tibial torsion. Kinematic and clinical parameters were evaluated for 114 children who walked independently and had not undergone previous surgery. Causes of intoeing presented combined in 72% of cases. Internal foot progression correlated with internal hip rotation and showed an inverse correlation with tibial torsion...
November 29, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/27816368/a-validated-single-view-radiographic-alternative-to-computed-tomography-for-the-measurement-of-femoral-anteversion-a-method-comparison-study
#3
Adam R Boissonneault, Takafumi Hiranaka, James R Roberson, Thomas L Bradbury
BACKGROUND: Although preoperative templating in total hip arthroplasty is helpful to ensure appropriate component position, there is no single-view radiographic method to determine femoral anteversion (FA) preoperatively. The aim of the present study was to validate the use of radiographic measurement of FA using a modified Budin view. METHODS: This prospective study reports on 105 limbs from 65 patients. Computed tomography (CT) scans and radiographs were obtained to measure native FA...
September 28, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27777916/result-of-modular-necks-in-primary-total-hip-arthroplasty-with-a-average-follow-up-of-four-years
#4
Jemin Yi, Kye Young Han, Young Jun Nam, Keun Woo Kim
PURPOSE: This study aimed to investigate the outcomes of modular neck-utilization in primary total hip arthroplasty (THA). MATERIALS AND METHODS: Thirty patients (34 hips) who had modular stem THA between April 2011 and January 2013 were evaluated. There were 19 men and 11 women with a mean age of 61.2 years at the time of surgery. There were 20 cases of osteonecrosis of femoral head, 7 cases of osteoarthritis, 6 cases of femur neck fracture, and 1 case of rheumatoid arthritis...
September 2016: Hip & Pelvis
https://www.readbyqxmd.com/read/27752989/femoral-morphology-in-the-dysplastic-hip-three-dimensional-characterizations-with-ct
#5
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
https://www.readbyqxmd.com/read/27739572/early-catastrophic-failure-of-a-pinnacle-marathon%C3%A2-polyethylene-acetabular-liner-a-report-of-a-malpositioned-pinnacle-duofix-ha%C3%A2-acetabular-shell-resulting-in-point-loading-and-accelerated-wear
#6
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
https://www.readbyqxmd.com/read/27739568/impact-of-individual-anatomy-on-the-benefit-of-cup-medialisation-in-total-hip-arthroplasty
#7
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
https://www.readbyqxmd.com/read/27704603/novel-potential-marker-for-native-anteversion-of-the-proximal-femur
#8
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
https://www.readbyqxmd.com/read/27677011/correction-of-hip-internal-rotation-in-walking-cerebral-palsy-adolescent-using-a-soft-tissue-procedure-an-alternative-to-femoral-rotation-osteotomy
#9
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
https://www.readbyqxmd.com/read/27646313/native-femoral-anteversion-should-not-be-used-as-reference-in-cementless-total-hip-arthroplasty-with-a-straight-tapered-stem-a-retrospective-clinical-study
#10
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
https://www.readbyqxmd.com/read/27636916/knee-pain-and-activity-outcomes-after-femoral-derotation-osteotomy-for-excessive-femoral-anteversion
#11
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
https://www.readbyqxmd.com/read/27631258/magnetic-resonance-imaging-evaluation-of-acetabular-orientation-in-normal-chinese-children
#12
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)
https://www.readbyqxmd.com/read/27612607/a-comparison-of-radiographic-outcomes-after-total-hip-arthroplasty-between-the-posterior-approach-and-direct-anterior-approach-with-intraoperative-fluoroscopy
#13
Timothy J Lin, Ilya Bendich, Alex S Ha, Benjamin J Keeney, Wayne E Moschetti, Ivan M Tomek
BACKGROUND: Radiographic outcomes after total hip arthroplasty (THA) have been linked to clinical outcomes. The direct anterior approach (DAA) for THA has been criticized by some for providing limited exposure and compromised implant position but allows for routine use of intraoperative fluoroscopy. We sought to determine whether radiographic measurements differed by THA approach using prospective cohorts. METHODS: Two reviewers blinded to surgical approach examined 194 radiographs, obtained 4-6 weeks after primary THA, and obtained measurements for acetabular inclination angle, acetabular anteversion, radiographic limb length discrepancy (LLD), and femoral offset...
August 10, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27586654/acetabular-version-increases-after-closure-of-the-triradiate-cartilage-complex
#14
Christoph E Albers, Andrea Schwarz, Markus S Hanke, Karl-Philipp Kienle, Stefan Werlen, Klaus A Siebenrock
BACKGROUND: Although the etiology of primary femoroacetabular impingement (FAI) is considered developmental, the underlying pathogenic mechanisms remain poorly understood. In particular, research identifying etiologic factors associated with pincer FAI is limited. Knowledge of the physiologic growth patterns of the acetabulum during skeletal maturation might allow conclusions on deviations from normal development that could contribute to pincer-related pathomorphologies. QUESTIONS/PURPOSES: In a population of healthy children, we asked if there were any differences related to skeletal maturation with regard to (1) acetabular version; (2) acetabular depth/width ratio; and (3) femoral head coverage in the same children as assessed by MRIs obtained 1 year apart...
September 1, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27575037/radiographic-determinants-of-early-failure-after-posterior-wall-acetabular-fracture-fixation
#15
Swapnil B Shah, Theodore T Manson, Jason W Nascone, Marcus F Sciadini, Robert V O'Toole
A retrospective review was conducted at an academic trauma center to determine whether fracture characteristics or aspects of native anatomy are predictive of early failure after fixation of posterior wall acetabular fractures. A chart review of posterior wall acetabular fractures treated from 2004 to 2009 yielded the study group that met the inclusion criteria. The study group included 18 consecutive patients who had clinical failure. The control group included 27 patients who did not have clinical failure...
November 1, 2016: Orthopedics
https://www.readbyqxmd.com/read/27546472/the-femoral-head-center-shifts-in-a-mediocaudal-direction-during-aging
#16
Tim A E J Boymans, Hidde D Veldman, Philip C Noble, Ide C Heyligers, Bernd Grimm
BACKGROUND: Accurate reconstruction of hip joint biomechanics is the key stone in total hip arthroplasty. Although proximal femur morphology is known to vary with both age and gender, few studies investigated this in the very elderly (ie, ≥80 years). The purpose of this study was to compare basic morphological parameters describing the position of the femoral head between very elderly and middle-aged subjects. METHODS: Computed tomographic scans of the femur of 90 very elderly (mean 84 years, range 80-105 years) and 58 middle-aged subjects (mean 52 years, range 20-79 years) were made...
July 21, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27536648/results-of-primary-total-hip-arthroplasty-using-36-mm-femoral-heads-on-1st-generation-highly-cross-linked-polyethylene-in-patients-50-years-and-less-with-minimum-five-year-follow-up
#17
Won-Kee Choi, Myung-Rae Cho, Hee-Soo Kim, Jun-Ho Nam, Seung-Bum Chae
PURPOSE: We evaluated the clinical and radiographic midterm results of primary total hip arthroplasty (THA) using a 36 mm diameter femoral head on 1st generation highly cross-linked polyethylene (HXLPE) in patients 50 years and less with minimum five year follow-up. MATERIALS AND METHODS: We retrospectively reviewed 31 patients (41 hips) aged 50 years and less underwent primary THA with a 36 mm diameter femoral head on HXLPE between 2004 and 2010. Clinical follow-ups included specific measurements like modified Harris hip scores (HHS) and Merle d'Aubigne and Postel score...
June 2016: Hip & Pelvis
https://www.readbyqxmd.com/read/27536629/total-hip-arthroplasty-using-metal-head-on-a-highly-cross-linked-polyethylene-liner
#18
Min-Yook Kim, Young-Yool Chung, Ji-Hoon Park, Jung-Ho Lee
PURPOSE: This retrospective study was performed to evaluate the clinical results and measure polyethylene liner wear in total hip arthroplasty (THA) with highly cross-linked polyethylene. MATERIALS AND METHODS: Except for patients who had died or were unable to have follow-up at least 2 years, 60 of 78 hips that underwent THA were included this study. The mean age was 64.5 years (range, 25-81 years) and the mean body mass index (BMI) was 23.0 kg/m(2) (18.1-32.3 kg/m(2))...
December 2015: Hip & Pelvis
https://www.readbyqxmd.com/read/27517071/effects-of-hip-geometry-on-fracture-patterns-of-proximal-femur
#19
Seyyed Morteza Kazemi, Mohamad Qoreishy, Ali Keipourfard, Mohammadreza Minator Sajjadi, Shahram Shokraneh
BACKGROUND: Some studies have previously shown that geometry of proximal femur can affect the probability of fracture and type of fracture. It happens since the geometry of the proximal femur determines how a force is applied to its different parts. In this study, we have compared proximal femur's geometric characteristics in femoral neck (FNF), intertrochanteric (ITF) and Subtrochanteric (STF) fractures. METHODS: In this study, 60 patients who had hip fractures were studied as case studies...
June 2016: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/27475618/femoral-derotation-osteotomy-in-adults-with-cerebral-palsy
#20
C Putz, S I Wolf, A Geisbüsch, M Niklasch, L Döderlein, T Dreher
BACKGROUND: Internal rotation gait constitutes a complex gait disorder in bilateral spastic cerebral palsy (BSCP) including static torsional and dynamic components resulting in lever arm dysfunction. Although femoral derotation osteotomy (FDO) is a standard procedure to correct increased femoral anteversion in children, unpredictable outcome has been reported. The effect of FDO when it is done as part of single-event multilevel surgery (SEMLS) in adulthood has not been investigated. METHODS: In this study mid-term data of 63 adults with BSCP and internal rotation gait, undergoing SEMLS including FDO were analyzed pre- and 1...
September 2016: Gait & Posture
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