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https://www.readbyqxmd.com/read/29145281/cup-revision-involving-retention-of-a-fixed-but-malpositioned-acetabular-component-in-patients-with-poor-general-conditions
#1
Weiping Su, Min Zeng, Yihe Hu, Jianxi Zhu, Long Wang, Jie Xie
This study evaluated the surgical technique and outcomes of cup revision involving retention of a fixed but malpositioned acetabular component in patients with poor general conditions.Between 2007 and 2013, we performed cup revision on 12 hips while retaining a fixed (either cemented or uncemented) but malpositioned acetabular component. Indications for this technique were: malpositioned but fixed acetabular shell; sufficient space for the insertion of the prosthesis; and patients with poor general conditions...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29137563/stem-anteversion-mismatch-to-the-anatomical-anteversion-causes-loss-of-periprosthetic-bone-density-after-tha
#2
Shinya Hayashi, Shingo Hashimoto, Tomoyuki Matsumoto, Koji Takayama, Kotaro Nishida, Kazunari Ishida, Ryosuke Kuroda
The short tapered-wedge stem is popular worldwide because it potentially preserves more bone stock during total hip arthroplasty (THA). However, stem version mismatch may affect physiological stress distribution. In this study, we analyzed the correlations between periprosthetic bone mineral density (BMD) changes and anteversion mismatch in patients who underwent THA using a short tapered-wedge stem. The study included 44 patients (44 joints) who underwent THA with a Tri-Lock stem. At baseline and at 6 and 24 months postoperatively, the BMDs in the seven Gruen zones were evaluated using dual-energy X-ray absorptiometry...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29129617/computed-tomographic-evaluation-of-bone-stock-in-patients-with-crowe-type-iii-developmental-dysplasia-of-the-hip-implications-for-guiding-acetabular-component-placement-using-the-high-hip-center-technique
#3
Bo Liu, Yu-Hang Gao, Lu Ding, Shu-Qiang Li, Jian-Guo Liu, Xin Qi
BACKGROUND: We evaluated acetabular cup coverage (CC) and rim contact (RC) to evaluate the bone stock above the acetabulum for guiding acetabular component placement using the high hip center technique in patients with Crowe type III developmental dysplasia of the hip. METHODS: Using hip computed tomography and image processing software, pelvises were reconstructed digitally in 20 hips with Crowe type III developmental dysplasia of the hip. Mimicked cup was placed with anteversion angles of 0° (group I), 5° (group II), and 10° (group III) respectively...
October 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29124076/clinical-outcomes-of-hip-arthroscopic-surgery-in-patients-with-femoral-retroversion-a-matched-study-to-patients-with-normal-femoral-anteversion
#4
David E Hartigan, Itay Perets, John P Walsh, Edwin O Chaharbakhshi, Leslie C Yuen, Benjamin G Domb
Background: Femoral retroversion has been noted as a possible risk factor for poor clinical results after hip arthroscopic surgery. Purpose: To compare the outcomes of the arthroscopic treatment of hip abnormalities in patients with femoral retroversion to patients with femoral anteversion between 10° and 20°. Study Design: Cohort study; Level of evidence, 3. Methods: Between November 2011 and September 2013, 790 hip arthroscopic procedures were performed at a single institution...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29122687/is-anatomic-acetabular-orientation-related-to-pelvic-morphology-ct-analysis-of-150-healthy-pelvises
#5
P Sautet, H Giorgi, P Chabrand, P Tropiano, J-N Argenson, S Parratte, B Blondel
BACKGROUND: Links between sagittal spinal alignment and acetabular orientation attract considerable research attention with the goal of optimising prosthetic cup position. However, whether pelvic incidence (PI) is related to anatomic acetabular orientation remains unknown. We therefore conducted a radiological study with the following objectives: to look for correlations between PI and anatomic acetabular parameters; to describe the sacro-pubic angle (SPA), defined by fixed bony pelvic landmarks, and its relations with acetabular inclination; and to determine whether anatomical parameters (PI and SPA) correlate with demographic characteristics...
November 6, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29122388/pelvic-tilt-displacement-before-and-after-artificial-hip-joint-replacement-surgery
#6
Toru Nishiwaki, Ryosuke Hata, Akihito Oya, Masaya Nakamura, Morio Matsumoto, Arihiko Kanaji
BACKGROUND: Prediction of pelvic displacement before total hip arthroplasty (THA) is important for accurate acetabular implant placement. This study aimed to evaluate the effect of contralateral joint conditions on pelvic displacement after THA. METHODS: A total of 355 cases that underwent computed tomography before and after THA for osteoarthritis due to developmental dysplasia were assessed. The pelvic plane was based on preoperative and postoperative day 1 computed tomography images...
October 16, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29105095/minimally-invasive-technique-for-coxofemoral-luxation-stabilisation-using-transarticular-toggle-system-a-cadaveric-study
#7
U Segal, J Shani, R Joseph
OBJECTIVE: To present a novel, semi-closed, surgical technique for coxofemoral luxation stabilisation using a transarticular toggle rod. STUDY DESIGN: Cadaveric study. MATERIALS AND METHODS: Craniodorsal luxation was generated by transecting the ligamentum teres in 12 coxofemoral joints and was then reduced using a closed technique. Anteversion and inclination angles were measured using fluoroscopic projections. An arthroscope was inserted through a bone tunnel drilled from the third trochanter through the femoral neck...
November 3, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/29080951/morphological-variation-of-the-anterior-inferior-iliac-spine-affects-hip-range-of-motion-in-flexion-after-rotational-acetabular-osteotomy
#8
Hidetoshi Hamada, Masaki Takao, Takashi Sakai, Nobuhiko Sugano
PURPOSE: Reduced range of motion (ROM) in flexion and internal rotation are associated with impaired activities of daily living (ADL) after rotational acetabular osteotomy (RAO). This study focused on the morphological variation of the anterior inferior iliac spine in developmental dysplasia of the hip (DDH) and its impact on post-operative bony ROM after RAO. This study aimed to investigate the association between bony ROM after RAO and pre-operative morphological factors of the pelvis and femur, including a positional variation of the anterior inferior iliac spine...
October 28, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29066106/quantitative-effect-of-pelvic-position-on-radiographic-assessment-of-acetabular-component-position
#9
Dimitri E Delagrammaticas, Hasham M Alvi, Aaron J Kaat, Ryan R Sullivan, Michael D Stover, David W Manning
BACKGROUND: Intraoperative fluoroscopy aims to improve component position in total hip arthroplasty. Measurement bias related to image quality, however, has not been quantified. We aim to quantify measurement bias in the interpretation of acetabular component position as a function of pelvis and fluoroscopic beam position in a simulated supine total hip arthroplasty model. METHODS: Posterior-anterior pelvis and hip images were obtained using a previously described pelvic model with known acetabular component position...
September 25, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29060027/augmented-marker-tracking-for-peri-acetabular-osteotomy-surgery
#10
Silvio Pflugi, Rakesh Vasireddy, Till Lerch, Timo M Ecker, Moritz Tannast, Nane Boemke, Klaus Siebenrock, Guoyan Zheng
We developed and validated a small, easy to use and cost-effective augmented marker-based hybrid navigation system for peri-acetabular osteotomy (PAO) surgery. The hybrid system consists of a tracking unit directly placed on the patient's pelvis, an augmented marker with an integrated inertial measurement unit ('MU) attached to the patient's acetabular fragment and the host computer. The tracking unit sends a live video stream of the marker to the host computer where the marker's pose is estimated. The augmented marker with the 'MU sends its pose estimate to the host computer where we apply sensor fusion to compute the final marker pose estimate...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29056127/transverse-acetabular-ligament-as-an-anatomical-landmark-for-intraoperative-cup-anteversion-in-primary-total-hip-replacement
#11
Mohammed Hatem Salal
OBJECTIVE: To assess the results of the use of transverse acetabular ligament (TAL) as an intraoperative indicator for acetabular cup anteversion alignment during total hip replacement. STUDY DESIGN: Case series. PLACE AND DURATION OF STUDY: The Nursing Home Hospital in Baghdad Medical City Complex, Baghdad, Iraq, from October 2014 to June 2015. METHODOLOGY: Patients were operated through a posterolateral approach for primary total hip arthroplasty (THA) in which transverse acetabular ligament (TAL) was identified and used as indicator for cup anteversion...
October 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29048695/evaluation-of-late-redislocation-in-patients-who-underwent-open-reduction-and-pelvic-osteotomy-as-treament-for-developmental-dysplasia-of-the-hip
#12
Ümit Tuhanioğlu, Hakan Cicek, Hasan U Ogur, Firat Seyfettinoglu, Ahmet Kapukaya
INTRODUCTION: The goal in the treatment of developmental dysplasia of the hip (DDH) is to achieve a stable and concentric reduction and to create a congruent relationship between the femoral head and the acetabulum. This study discusses the causes of loss of reduction in DDH patients who had a concentrically reduced hip at the time of removal of the hip spica cast and cessation of brace use and who later appeared with hip redislocation after mobilisation and ambulation. In addition, the possible interventions in such cases are also discussed...
October 16, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29040131/acetabular-global-insufficiency-in-patients-with-down-syndrome-and-hip-related-symptoms-a-matched-cohort-study
#13
Evgeny Bulat, Daniel A Maranho, Leslie A Kalish, Michael B Millis, Young-Jo Kim, Eduardo N Novais
BACKGROUND: The etiology of hip instability in Down syndrome is not completely understood. We investigated the morphology of the acetabulum and femur in patients with Down syndrome and compared measurements of the hips with those of matched controls. METHODS: Computed tomography (CT) images of the pelvis of 42 patients with Down syndrome and hip symptoms were compared with those of 42 age and sex-matched subjects without Down syndrome or history of hip disease who had undergone CT for abdominal pain...
October 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28993085/can-anatomic-measurements-of-stem-anteversion-angle-be-considered-as-the-functional-anteversion-angle
#14
Keisuke Uemura, Masaki Takao, Yoshito Otake, Koki Koyama, Futoshi Yokota, Hidetoshi Hamada, Takashi Sakai, Yoshinobu Sato, Nobuhiko Sugano
BACKGROUND: Stem anteversion angle is important in the combined anteversion theory to avoid implant impingement after total hip arthroplasty (THA). However, anatomic measurements of stem anteversion angle may not represent functional anteversion of the femur if the femur undergoes axial rotation. Herein, the femoral rotational angle (FRA) was measured in supine and standing positions before and after THA to evaluate the difference between anatomic and functional measurements. METHODS: A total of 191 hips (174 patients) treated with THA for osteoarthritis were analyzed in this retrospective, case-controlled study...
September 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28990125/differences-in-range-of-motion-with-the-same-combined-anteversion-after-total-hip-arthroplasty
#15
Takaaki Ohmori, Tamon Kabata, Yoshitomo Kajino, Tadashi Taga, Kazuhiro Hasegawa, Daisuke Inoue, Takashi Yamamoto, Tomoharu Takagi, Junya Yoshitani, Takuro Ueno, Hiroyuki Tsuchiya
PURPOSE: We investigated the various impingement angles (including both bony and prosthetic impingement) and impingement types that can occur after THA, even when the same combined anteversion parameter is used. We also investigated the relationship between impingement angle and acetabular morphology or femoral anteversion. METHODS: We evaluated 83 patients with no hip arthritis. We divided them into six groups according to acetabular CE angle (≤15°, >15-≤25°, and >25°) and femoral anteversion (≤20° and >20°)...
October 9, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28976431/global-alignment-and-proportion-gap-score-development-and-validation-of-a-new-method-of-analyzing-spinopelvic-alignment-to-predict-mechanical-complications-after-adult-spinal-deformity-surgery
#16
Caglar Yilgor, Nuray Sogunmez, Louis Boissiere, Yasemin Yavuz, Ibrahim Obeid, Frank Kleinstück, Francisco Javier Sánchez Pérez-Grueso, Emre Acaroglu, Sleiman Haddad, Anne F Mannion, Ferran Pellise, Ahmet Alanay
BACKGROUND: The restoration of normal sagittal alignment is a critical goal in adult spinal deformity surgery to achieve favorable outcomes and prevent mechanical complications. Schwab sagittal modifiers have been accepted as targets for appropriate alignment, but addressing these targets does not always prevent high mechanical complication or revision rates. This may be because the linear absolute numerical parameters do not cover the whole pelvic incidence spectrum and the distribution of lordosis, pelvic anteversion, and negative malalignment are not considered as potential causes of failure...
October 4, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28975643/change-in-axial-rotation-of-the-femur-in-the-resting-supine-position-following-total-hip-arthroplasty
#17
Keisuke Uemura, Masaki Takao, Hidetoshi Hamada, Takashi Sakai, Nobuhiko Sugano
Stem anteversion in the setting of total hip arthroplasty (THA) is usually measured by referencing the posterior condylar line (PCL). However, stem anteversion may not express the functional torsion of the femur if a consistent horizontal tilt in the PCL is observed after THA. Herein, the horizontal tilt of the PCL at the resting neutral position of the hip was retrospectively measured in 53 THA patients from three computed tomography (CT) datasets: (i) preoperative (preop-CT), (ii) 3 weeks after THA (1st postop-CT), and (iii) more than 2 years after THA (2nd postop-CT)...
October 3, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28962199/3d-printing-technology-used-in-severe-hip-deformity
#18
Shanshan Wang, Li Wang, Yan Liu, Yongfang Ren, Li Jiang, Yan Li, Hao Zhou, Jie Chen, Wenxiao Jia, Hui Li
This study was designed to assess the use of a 3D printing technique in total hip arthroplasty (THA) for severe hip deformities, where new and improved approaches are needed. THAs were performed from January 2015 to December 2016. Bioprosthesis artificial hip joints were used in both conventional and 3D printing hip arthroplasties. A total of 74 patients (57 cases undergoing conventional hip replacements and 17 undergoing 3D printing hip replacements) were followed-up for an average of 24 months. The average age of the patients was 62...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28960822/analysis-of-spino-pelvic-sagittal-alignment-in-young-chinese-patients-with-lumbar-disc-herniation
#19
Han Fei, Wei-Shi Li, Zhuo-Ran Sun, Qing-Wei Ma, Zhong-Qiang Chen
OBJECTIVE: Few studies have concentrated on the sagittal alignment of lumbar disc herniation (LDH), especially the parameters of the pelvis, and controversy exists about whether pelvic morphology is involved in the pathogenesis of LDH. The present study analyzed the characteristics of the sagittal alignment in young Chinese LDH patients and explored the impact of pelvic morphology on the pathogenesis of LDH. METHODS: A retrospective analysis was conducted on 100 young patients with LDH (69 men and 31 women, aged 18-35 years), and the clinical and imaging findings met the criteria for the diagnosis of LDH...
August 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28951281/outcomes-of-cup-revision-for-ilio-psoas-impingement-after-total-hip-arthroplasty-retrospective-study-of-46-patients
#20
C Batailler, N Bonin, M Wettstein, A Nogier, S Martres, E Ollier, O May, S Lustig
BACKGROUND: Impingement of the ilio-psoas tendon on the acetabular component is a cause of pain after total hip arthroplasty (THA). Studies of cup revision for ilio-psoas impingement (IPI) are scarce and limited in size. We therefore conducted a large multicentre retrospective study with the following objectives: to assess the effectiveness of cup replacement in resolving the impingement syndrome, to determine the frequency and nature of complications after cup revision for IPI, and to identify pre-operative factors associated with good outcomes of cup revision for IPI...
September 22, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
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