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Femoral anteversion

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https://www.readbyqxmd.com/read/29325188/comparison-of-radiographic-measurements-of-the-femur-in-yorkshire-terriers-with-and-without-medial-patellar-luxation
#1
Michal Žilinčík, Marián Hluchý, Ladislav Takáč, Valent Ledecký
OBJECTIVE:  This article aimed to compare measurements of anatomical angles of the femurs, based on radiography, in Yorkshire Terriers without or with various grades of medial patellar luxation (MPL) based on radiography. METHODS:  The skeletally mature Yorkshire Terrier dogs without MPL and with various grades of MPL were included in this prospective study. Cases with other orthopaedic disorders were excluded. For inclusion of the dog, it was required that standardized digital radiographs of both femurs in craniocaudal and axial directions were available...
January 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29320924/a-model-to-evaluate-pauwels-type-iii-femoral-neck-fractures
#2
Kevin M Magone, Jonas K Owen, Bernard P Kemker, Oliver Bloom, Sidney Martin, Patrick Atkinson
While many femoral neck fractures can be reliably treated with surgical intervention, Pauwels III femoral neck fractures in the young adult population continue to be a challenging injury, and there is no consensus on optimal treatment. As such, there are past and ongoing biomechanical studies to evaluate the fixation provided by different constructs for this inherently unstable fracture. While many investigations rely on cadavers to evaluate the biomechanical performance of a construct, significant inter-subject variability can confound the analysis...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29304960/editorial-commentary-arthroscopic-hip-ligamentum-teres-reconstruction-reality-or-mythology
#3
EDITORIAL
Ali S Bajwa, Richard N Villar
The ligamentum teres (LT) is perceived to contribute to hip stability and proprioception. LT incompetence can lead to pain and instability, which may play a role in chondral damage. Hip arthroscopy plays a role in diagnosing and treating LT tears. Reconstruction of the LT is feasible, but careful attention needs to be paid to tunnel positioning, graft material, graft length, and fixation methods. An anatomic femoral tunnel should exit at the fovea capitis on the femoral side, whereas the location for safe placement of the acetabular attachment is thought to be in the posteroinferior part of the cotyloid fossa...
January 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29275431/influence-of-femoral-bowing-on-range-of-motion-after-total-hip-arthroplasty
#4
Keisuke Akiyama, Takaaki Shibuya
PURPOSE: The influence of physiologic femoral bowing on range of motion (ROM) after total hip arthroplasty (THA) remains unknown. The purpose of this study was to investigate the morphology of the femur in patients who underwent THA, and to analyze the influence of femoral bowing on ROM due to implant impingement after THA. METHODS: The ROM was calculated from 100 hips in 90 patients who underwent THA using computed tomography data with a 3D dynamic analysis software...
December 23, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29250495/results-of-total-hip-arthroplasty-with-36-mm-metallic-femoral-heads-on-1st-generation-highly-cross-linked-polyethylene-as-a-bearing-surface-in-less-than-forty-year-old-patients-minimum-ten-year-results
#5
Won Kee Choi, Jae Jung Kim, Myung-Rae Cho
Purpose: We evaluated long-term clinical and radiographic results in patients underwent primary total hip arthroplasty (THA) using 36-mm metallic femoral head and 1st generation highly cross-linked polyethylene among patients aged 40 years and less, with minimum 10 years follow-up. Materials and Methods: We retrospectively reviewed 20 hips underwent primary THA by one hip surgeon using 36-mm femoral head and 1st generation highly cross-linked polyethylene from 2004 to 2006...
December 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/29201293/calcar-femorale-in-patients-with-osteoarthritis-of-the-hip-secondary-to-developmental-dysplasia
#6
Tomonori Tetsunaga, Kazuo Fujiwara, Hirosuke Endo, Tomoko Tetsunaga, Naofumi Shiota, Toru Sato, Toshifumi Ozaki
Background: We investigated whether the calcar femorale, a cortical septum in the region of the lesser trochanter of the femur, correlates with results of femoral stem implantation in patients with osteoarthritis of the hip secondary to developmental dysplasia using computed tomography. Methods: This retrospective study included 277 hips (41 males and 236 females; age, 37 to 92 years) of patients who had presented to Okayama Medical Center with hip pain. Of these, a total of 219 hips (31 males and 188 females) had previously undergone total hip arthroplasty...
December 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/29152500/application-of-3d-technology-and-printing-for-femoral-derotation-osteotomy-case-and-technical-report
#7
Nicolás Fiz, Diego Delgado, Xabier Sánchez, Pello Sánchez, Ane Miren Bilbao, Jaime Oraa, Mikel Sánchez
In some surgical techniques like femoral derotation osteotomy, accuracy is a key factor that often is not optimal because of the lack of appropriate technology. 3D printing is emerging in many professional areas and its use in the medical field may enhance the results of certain surgeries. This case describes a patient who underwent an intramedullary nail fixation to treat a femoral shaft fracture. After nine months, the patient presented hip pain and "in toe" walking caused by a malrotation produced during the surgery...
October 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29150745/alignment-in-the-transverse-plane-but-not-sagittal-or-coronal-plane-affects-the-risk-of-recurrent-patella-dislocation
#8
Shigeru Takagi, Takashi Sato, Satoshi Watanabe, Osamu Tanifuji, Tomoharu Mochizuki, Go Omori, Naoto Endo
PURPOSE: Abnormalities of lower extremity alignment (LEA) in recurrent patella dislocation (RPD) have been studied mostly by two-dimensional (2D) procedures leaving three-dimensional (3D) factors unknown. This study aimed to three-dimensionally examine risk factors for RPD in lower extremity alignment under the weight-bearing conditions. METHODS: The alignment of 21 limbs in 15 RPD subjects was compared to the alignment of 24 limbs of 12 healthy young control subjects by an our previously reported 2D-3D image-matching technique...
November 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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
#9
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/29105095/minimally-invasive-technique-for-coxofemoral-luxation-stabilisation-using-transarticular-toggle-system-a-cadaveric-study
#10
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
#11
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/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/28975643/change-in-axial-rotation-of-the-femur-in-the-resting-supine-position-following-total-hip-arthroplasty
#16
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
#17
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/28946924/the-anteroposterior-axis-of-the-tibia-is-approximately-perpendicular-to-the-anterior-pelvic-plane-in-the-standing-position-in-healthy-japanese-subjects
#18
Norio Imai, Dai Miyasaka, Tomoyuki Ito, Hayato Suzuki, Izumi Minato, Naoto Endo
BACKGROUND: We previously reported that the clinical epicondylar axis (CEA) was approximately parallel to the transverse axis of the anterior pelvic plane (APP) in the standing position in normal subjects. The purpose of this study was to investigate the rotational alignment between APP in the standing position and the anteroposterior (AP) axis of the tibia relative to pelvic coordination in normal subjects. METHODS: This study included 68 healthy Japanese, 24 males and 44 females, without lumbago and knee pain...
September 25, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28945686/an-anatomic-study-on-whether-femoral-version-originates-in-the-neck-or-the-shaft
#19
Hunter D Archibald, Kathleen F Petro, Raymond W Liu
BACKGROUND: Femoral anteversion is generally asymptomatic but can result in lower extremity issues like patellofemoral instability and pain. Surgical correction of anteversion can be performed proximal, mid shaft or distal. A better understanding of the specific location of the rotational deformity can help guide the optimal location of the osteotomy. In this study we examine the contribution of the femoral neck and shaft to total femoral version. METHODS: We studied 590 pairs of well-preserved cadaveric femurs...
September 22, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28925669/lower-extremity-abnormalities-in-children
#20
Caitlyn M Rerucha, Caleb Dickison, Drew C Baird
Leg and foot problems in childhood are common causes of parental concern. Rotational problems include intoeing and out-toeing. Intoeing is most common in infants and young children. Intoeing is caused by metatarsus adductus, internal tibial torsion, and femoral anteversion. Out-toeing is less common than intoeing and occurs more often in older children. Out-toeing is caused by external tibial torsion and femoral retroversion. Angular problems include genu varum (bowleg) and genu valgum (knock knee). With pes planus (flatfoot), the arch of the foot is usually flexible rather than rigid...
August 15, 2017: American Family Physician
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