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Femoral impingement

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https://www.readbyqxmd.com/read/28423434/-radiologic-presentation-in-subspine-impingement-and-correlation-with-intraarticular-impingement-in-the-hip
#1
David R Krüger, Michael Schütz, Carsten Perka, Jörg Schröder
Background Besides the known intraarticular femoroacetabular impingement (FAI), recently forms of extra-articular impingement of the hip have been increasingly recognized. Recent studies have described an extra-articular impingement between a distal extension of the anterior inferior iliac spine (AIIS) and the femoral neck (AIIS or subspine impingement). Evidently, an association between this subspine impingement and an intraarticular FAI seems to exist. Little is known about the incidence of this impingement type and the value of its radiological diagnostics...
April 19, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
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
#2
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
https://www.readbyqxmd.com/read/28412058/functional-outcomes-and-cam-recurrence-after-arthroscopic-treatment-of-femoroacetabular-impingement-in-adolescents
#3
Ryan M Degen, Stephanie W Mayer, Kara G Fields, Struan H Coleman, Bryan T Kelly, Danyal H Nawabi
PURPOSE: To compare the functional outcomes after arthroscopic treatment of femoroacetabular impingement (FAI) in adolescent patients and non-adolescent patients, and to report on the rate of cam recurrence within 2 years after femoral osteoplasty in a limited sample of the adolescent group. METHODS: From 2010 to 2014, patients younger than 18 years with symptomatic FAI (alpha angle >50°) who underwent hip arthroscopy with minimum 2-year follow-up or reoperation were identified...
April 12, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28401279/current-concepts-in-the-diagnosis-and-management-of-extra-articular-hip-impingement-syndromes
#4
REVIEW
Naoki Nakano, Grace Yip, Vikas Khanduja
PURPOSE: Extra-articular hip impingement syndromes encompass a group of conditions that have previously been an unrecognised source of pain in the hip and on occasion been associated with intra-articular hip impingement as well. As arthroscopic techniques for the hip continue to evolve, the importance of these conditions has been recognised recently and now form an important part of the differential of an individual presenting with hip pain. The aim of this article, therefore, is to provide the reader with an evidence-based and comprehensive update of these syndromes...
April 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28395391/dual-mobility-acetabular-cups-in-primary-total-hip-arthroplasty-in-patients-at-high-risk-for-dislocation
#5
Steven F Harwin, Jaydev B Mistry, Morad Chughtai, Anton Khlopas, Chukwuweike Gwam, Jared M Newman, Carlos A Higuera, Peter M Bonutti, Arthur L Malkani, Frank R Kolisek, Ronald E Delanois, Michael A Mont
INTRODUCTION: Postoperative dislocation occurs in approximately 2% of primary total hip arthroplasties (THAs). Risk factors associated with dislocation include: age of 70 years or older, body mass index (BMI) of 30 kg/m2 or greater, alcohol abuse, and neuro-degenerative diseases such as multiple sclerosis or Parkinson's disease. As a result, dual-mobility articulations, which have been typically used for revision procedures, have become an increasingly popular option for these "at risk" primary THAs...
April 11, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28385930/decreased-and-increased-relative-acetabular-volume-predict-the-development-of-osteoarthritis-of-the-hip-an-osteological-review-of-1090-hips
#6
D S Weinberg, D F K Williamson, M B Millis, R W Liu
AIMS: Recently, there has been considerable interest in quantifying the associations between bony abnormalities around and in the hip joint and osteoarthritis (OA). Our aim was to investigate the relationships between acetabular undercoverage, acetabular overcoverage, and femoroacetabular impingement (FAI) with OA of the hip, which currently remain controversial. MATERIALS AND METHODS: A total of 545 cadaveric skeletons (1090 hips) from the Hamann-Todd osteological collection were obtained...
April 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28375966/simultaneous-bilateral-hip-arthroscopy-in-adolescent-athletes-with-symptomatic-femoroacetabular-impingement
#7
Mark O McConkey, Vivek Chadayammuri, Tigran Garabekyan, Stephanie W Mayer, Matthew J Kraeutler, Omer Mei-Dan
BACKGROUND: Femoroacetabular impingement represents a common cause of hip pain in adolescents. The purpose of the present study was to evaluate the safety and efficacy of simultaneous bilateral hip arthroscopy for bilateral symptomatic femoroacetabular impingement in adolescent athletes. METHODS: Clinical data were collected in a prospective database on patients who underwent unilateral or simultaneous bilateral hip arthroscopy and included complications, reoperation rate, and return to play time...
April 3, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28371783/monocular-vision-and-imu-based-system-for-prosthesis-pose-estimation-during-total-hip-replacement-surgery
#8
Shaojie Su, Yixin Zhou, Zhihua Wang, Hong Chen
The average age of population increases worldwide, so does the number of total hip replacement surgeries. Total hip replacement, however, often involves a risk of dislocation and prosthetic impingement. To minimize the risk after surgery, we propose an instrumented hip prosthesis that estimates the relative pose between prostheses intraoperatively and ensures the placement of prostheses within a safe zone. We create a model of the hip prosthesis as a ball and socket joint, which has four degrees of freedom (DOFs), including 3-DOF rotation and 1-DOF translation...
March 30, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28353567/are-normal-hips-being-labeled-as-femoroacetabular-impingement-due-to-ee-angle
#9
Tian You, Bei Yang, Xin-Tao Zhang, Xiao-Cheng Jiang, Shuang Wang, Wen-Tao Zhang
Gluteal muscle contracture (GMC) is a clinical syndrome characterized by gait abnormality and limb dysfunction, as well as secondary deformities of pelvis and femur. Femoroacetabular impingement (FAI) typically could be diagnosed on the basis of computed tomography (CT) such as the equatorial-edge angle (EE angle), but it did not work well in GMC patients. In this study, we retrospected all image data and found small EE angles in GMCs, which meant retroverted acetabulum; however, none of them showed no symptoms and signs of FAI...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28342722/the-effects-of-graft-size-and-insertion-site-location-during-anterior-cruciate-ligament-reconstruction-on-intercondylar-notch-impingement
#10
Alexander D Orsi, Paul K Canavan, Askhan Vaziri, Ruben Goebel, Onaly A Kapasi, Hamid Nayeb-Hashemi
BACKGROUND: Intercondylar notch impingement is detrimental to the anterior cruciate ligament (ACL). Notchplasty is a preventative remodeling procedure performed on the intercondylar notch during ACL reconstruction (ACLR). This study investigates how ACL graft geometry and both tibial and femoral insertion site location may affect ACL-intercondylar notch interactions post ACLR. A range of ACL graft sizes are reported during ACLR, from six millimeters to 11mm in diameter. Variability of three millimeters in ACL insertion site location is reported during ACLR...
March 22, 2017: Knee
https://www.readbyqxmd.com/read/28342138/does-removal-of-subchondral-cortical-bone-provide-sufficient-resection-depth-for-treatment-of-cam-femoroacetabular-impingement
#11
Penny R Atkins, Stephen K Aoki, Ross T Whitaker, Jeffrey A Weiss, Christopher L Peters, Andrew E Anderson
BACKGROUND: Residual impingement resulting from insufficient resection of bone during the index femoroplasty is the most-common reason for revision surgery in patients with cam-type femoroacetabular impingement (FAI). Development of surgical resection guidelines therefore could reduce the number of patients with persistent pain and reduced ROM after femoroplasty. QUESTIONS/PURPOSES: We asked whether removal of subchondral cortical bone in the region of the lesion in patients with cam FAI could restore femoral anatomy to that of screened control subjects...
March 24, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28334547/origin-of-cam-morphology-in-femoroacetabular-impingement
#12
William Z Morris, Ryan T Li, Raymond W Liu, Michael J Salata, James T Voos
Cam morphology of the proximal femur is an abnormal contour of the femoral head-neck junction present in approximately 15% to 25% of the asymptomatic population, predominantly in males. Alpha angle and femoral head-neck offset ratio are 2 objective measurement tools that define cam morphology. Both primary (idiopathic) and secondary cam deformity develops through distinct mechanisms. The cause of primary (idiopathic) cam morphology remains incompletely understood. Mounting evidence suggests that idiopathic cam morphology develops during adolescence through alterations in the capital femoral epiphysis in response to participation in vigorous sporting activity...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28302429/does-bony-regrowth-occur-after-arthroscopic-femoroplasty-in-a-group-of-young-adolescents-femoroplasty-regrowth-in-adolescents
#13
Itay Perets, Asheesh Gupta, Edwin O Chaharbakhshi, Lyall Ashberg, David E Hartigan, Mary R Close, Benjamin G Domb
PURPOSE: To evaluate femoral head-neck bone regrowth and PROs in skeletally immature patients that underwent arthroscopic femoroplasties over a minimum 2-year period. METHODS: Eleven skeletally immature hips (10 patients) with open femoral head physes underwent femoroplasty between October 2008 and November 2013. Inclusion criteria were minimum 2-year follow-up with patient-reported outcomes (PROs) and radiographs preoperatively, at 2 weeks, and at a minimum of 2 years postoperatively...
March 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28290757/hip-musculoskeletal-conditions-and-associated-factors-that-influence-squat-performance-a-systematic-review
#14
Scott W Cheatham, Kyle R Stull, Mike Fantigrassi, Ian Montel
CONTEXT: The squat is a fundamental movement for weight lifting and sports performance. Both unilateral and bilateral squats are also used to assess transitional and dynamic lower extremity control. Common lower extremity conditions can have an influence on squat performance. Of interest, are the effects of hip musculoskeletal conditions and associated factors such as hip muscle pain, fatigue, and tightness on squat performance. Currently, there has been no appraisal of the evidence regarding the association of these conditions and associated factors on squat performance...
March 14, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28288607/influence-of-different-great-trochanteric-entry-points-on-the-outcome-of-intertrochanteric-fractures-a-retrospective-cohort-study
#15
Shuo Pan, Xiao-Hui Liu, Tao Feng, Hui-Jun Kang, Zhi-Guang Tian, Chun-Guang Lou
BACKGROUND: The Proximal Femoral Nail Antirotation (PFNA) system for treatment of intertrochanteric fractures is currently widely applied worldwide. However, even though the PFNA has produced good clinical outcomes, a poor introduction technique with an inappropriate entry point can cause surgical complications. Some researchers suggest improving clinical outcomes by modifying the entry point, but no research has focused on this issue. The purpose of the present study is to compare the clinical and radiological outcomes of two different trochanteric entry points for the treatment of intertrochanteric fractures using the PFNA system...
March 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28286463/range-of-movement-for-impingement-and-dislocation-avoidance-in-total-hip-replacement-predicted-by-finite-element-model
#16
Laura Ezquerra, María Paz Quilez, María Ángeles Pérez, Jorge Albareda, Belén Seral
Dislocation is a serious complication in total hip replacement (THR). An inadequate range of movement (ROM) can lead to impingement of the prosthesis neck on the acetabular cup; furthermore, the initiation of subluxation and dislocation may occur. The objective of this study was to generate a parametric three-dimensional finite element (FE) model capable of predicting the dislocation stability for various positions of the prosthetic head, neck, and cup under various activities. Three femoral head sizes (28, 32, and 36 mm) were simulated...
2017: Journal of Medical and Biological Engineering
https://www.readbyqxmd.com/read/28259463/properties-of-the-cartilage-layer-from-the-cam-type-hip-impingement-deformity
#17
Andrew D Speirs, Paul E Beaulé, Adrian Huang, Hanspeter Frei
Femoro-acetabular impingement (FAI) is associated with significant acetabular cartilage damage and degenerative arthritis. To understand the contact stress and thus biomechanical mechanisms that may contribute to degeneration, the material behaviour of the cartilage layer is required. The objective of this study is to determine the fibril-reinforced poroelastic properties and composition of cartilage from cam deformities and to compare to those of normal cartilage. Patients undergoing surgical treatment of a symptomatic cam FAI deformity were recruited from the clinical practice of one of the authors...
April 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28244926/biomechanical-evaluation-of-the-depth-of-resection-during-femoral-neck-osteoplasty-for-anterior-impingement-following-slipped-capital-femoral-epiphysis
#18
Kevin M Dale, Geoffrey T Burns, Ying Li
BACKGROUND: Femoroacetabular impingement as a result of slipped capital femoral epiphysis (SCFE) has been treated traditionally with a proximal femoral osteotomy, but open and arthroscopic femoral osteoplasty is becoming increasingly popular. Cam lesions result from excess bone primarily at the anterolateral femoral head-neck junction. SCFEs result from posterior and inferior slippage of the femoral epiphysis, causing the metaphysis to move anteriorly. This study's purpose was to compare fourth-generation sawbones standard femurs with SCFE femurs to determine whether bone resection from the anterior metaphysis results in similar biomechanical properties...
February 27, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28244282/descriptive-epidemiology-of-patients-undergoing-total-hip-arthroplasty-in-korea-with-focus-on-incidence-of-femoroacetabular-impingement-single-center-study
#19
Woo Yong Lee, Deuk Soo Hwang, Chang Kyun Noh
We analyzed the causes leading to total hip arthroplasty (THA), aimed to clarify the incidence of femoroacetabular impingement (FAI) among the causes, and compared the incidence in Korea with those in other countries. From January 2000 to December 2014, 1,206 hips of 818 patients who underwent primary THA at our institute were reviewed retrospectively in terms of radiographs and electronic charts. The radiographs and radiographic parameters were reviewed and measured by 2 of the authors, who are orthopedic surgeons...
April 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28236073/complications-after-percutaneous-internal-fixator-for-anterior-pelvic-ring-injuries
#20
Christian Fang, Hatem Alabdulrahman, Hans-Christophe Pape
OBJECTIVES: The aim of the study is to report on the observed incidence of complications following pedicle screw and rod internal fixator (INFIX) stabilization of pelvic ring fractures. METHODS: In a retrospective review of consecutive patient series conducted in a University level 1 trauma hospital, 43 patients (21 female and eight male), mean age 64.2 (range 16-87) with OTA/AO type B or C pelvic ring fractures received percutaneous pedicle screw and rod internal fixator (INFIX) anterior stabilization of pelvic ring fractures; 29 fulfilled inclusion criteria with three months' minimal follow-up or known complication...
February 24, 2017: International Orthopaedics
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