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acetabular femoral impingment

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https://www.readbyqxmd.com/read/28529662/femoral-and-acetabular-re-alignment-in-slipped-capital-femoral-epiphysis
#1
M Leunig, H M Manner, L Turchetto, R Ganz
NEW PATHOPHYSIOLOGICAL INSIGHTS: Based on improved knowledge of the vascular supply of the proximal femur, a safe surgical dislocation of the hip joint was established allowing direct insights to the pathomorphological malfunctioning of the joint. One insight was that slipped capital femoral epiphysis (SCFE) impingement leads to substantial damage of the chondrolabral rim area, even in the presence of minor slips. A further surgical development was the extended retinacular flap allowing for correction of the deformity with calculable risk for iatrogenic necrosis...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28529661/slipped-capital-femoral-epiphysis-management-and-the-arthroscope
#2
F Accadbled, O May, C Thévenin-Lemoine, J Sales de Gauzy
BACKGROUND: In situ pinning of slipped capital femoral epiphysis (SCFE) results in various degrees of deformity of the femoral head-neck junction. Repetitive trauma from cam-type femoroacetabular impingement (FAI) can lead to labral tears and injury to the articular cartilage causing loss of function. Arthroscopic osteoplasty is an alternative to open procedure and to Southwick/Imhäuser-type osteotomies in symptomatic selected cases. SURGICAL TECHNIQUE: The amount of bone to be resected has to be carefully planned pre-operatively...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28478819/subclinical-developmental-dysplasia-of-the-hip-could-predispose-to-femoroacetabular-impingement
#3
Simon Erridge, En Lin Goh, Swathikan Chidambaram
Developmental dysplasia of the hip (DDH) and femoroacetabular impingement (FAI) are separate causes of premature osteoarthritis. There is a paucity of literature describing potential ways in which an individual can be predisposed to FAI. This hypothesis aims to outline how subclinical DDH may predispose a patient to FAI. In DDH the acetabular malformation of the hip joint alters the weight distribution superiorly in the loading axis. In accordance with Wolff's Law, we propose that this change in loading may result in the formation of protrusions on either the acetabular rim or femoral head and neck, predisposing to impingement of the hip during to certain movements and consequently, FAI...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28423434/-radiologic-presentation-in-subspine-impingement-and-correlation-with-intraarticular-impingement-in-the-hip
#4
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
#5
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/28401279/current-concepts-in-the-diagnosis-and-management-of-extra-articular-hip-impingement-syndromes
#6
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
#7
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
#8
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/28371783/monocular-vision-and-imu-based-system-for-prosthesis-pose-estimation-during-total-hip-replacement-surgery
#9
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...
June 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
#10
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/28290757/hip-musculoskeletal-conditions-and-associated-factors-that-influence-squat-performance-a-systematic-review
#11
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/28286463/range-of-movement-for-impingement-and-dislocation-avoidance-in-total-hip-replacement-predicted-by-finite-element-model
#12
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
#13
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/28224071/arthroscopic-fixation-of-os-acetabuli-technique-when-to-resect-and-when-to-fix
#14
Cecilia Pascual-Garrido, John B Schrock, Justin J Mitchell, Gaston Camino Willhuber, Omer Mei-Dan, Jorge Chahla
Acetabular rim fractures, or os acetabuli, are hypothesized to occur as a result of an unfused ossification center or a stress fracture from repetitive impingement of an abnormally shaped femoral neck against the acetabular rim. When treated surgically, these fragments are typically excised as part of the correction for femoroacetabular impingement. However, in some patients, removal of these fragments can create symptoms of gross instability or microinstability of the hip. In these cases, internal fixation of the fragment is necessary...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28180913/-surgical-hip-dislocation-current-status-in-the-treatment-of-femoral-acetabular-impingement
#15
F Sitterlee, S Kirschbaum, C Perka, M Müller
INTRODUCTION: Surgical hip dislocation (SHD) in the therapy of femoral acetabular impingement (FAI) has been mostly replaced by minimally invasive techniques. Nevertheless, in the circumstances of complex FAI types and combined impingement located in inaccessible areas of the hip, SHD is an option to reach those deformities. The advantage of the complete overview of the hip joint enables the circumferential therapy of bony deformity, but at the expense of higher invasivity. In the literature there is still a lack of mid to long-term studies of SHD to determine the overall treatment outcome...
February 8, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28165597/increase-in-safe-zone-area-of-the-acetabular-cup-using-dual-mobility-cups-in-tha
#16
Takaaki Ohmori, Tamon Kabata, Toru Maeda, Yoshitomo Kajino, Tadashi Taga, Kazuhiro Hasegawa, Daisuke Inoue, Takashi Yamamoto, Tomoharu Takagi, Hiroyuki Tsuchiya
BACKGROUND: Dual mobility cup (DMC) inserts reduce the risk of dislocation after total hip arthroplasty (THA). No available research has clearly delineated stability advantages of DMC inserts in primary and revision THA. We investigated: (i) the degree of change in the safe zone of the cup when a DMC insert is used compared to a fixed insert; (ii) the method of selecting candidates for a DMC insert without changing the position of the acetabular (cup) component during revision THA in frequent dislocation cases caused by implant impingement...
January 30, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28149715/remplissage-of-the-femoral-head-neck-junction-in-revision-hip-arthroscopy-a-technique-to-correct-excessive-cam-resection
#17
Jonathan M Frank, Jorge Chahla, Justin J Mitchell, Eduardo Soares, Marc J Philippon
Femoroacetabular impingement (FAI) is an increasingly recognized cause of hip pain. This pathology often involves abnormal femoral neck shape (cam-type FAI), acetabular over coverage (pincer-type FAI), or mixed pathology. Surgical treatment of this entity includes labral repair and femoral head-neck osteochondroplasty. A mindful arthroscopic technique is of paramount importance, because maintaining the integrity of the labrum and a corresponding neck volume has been reported to be vital in maintaining the hip suction seal...
December 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28088837/disease-severity-classification-using-quantitative-magnetic-resonance-imaging-data-of-cartilage-in-femoroacetabular-impingement
#18
Lisa L Henn, John Hughes, Eleena Iisakka, Jutta Ellermann, Shabnam Mortazavi, Connor Ziegler, Mikko J Nissi, Patrick Morgan
Femoroacetabular impingement (FAI) is a condition in which subtle deformities of the femoral head and acetabulum (hip socket) result in pathological abutment during hip motion. FAI is a common cause of hip pain and can lead to acetabular cartilage damage and osteoarthritis. For some patients with FAI, surgical intervention is indicated, and it can improve quality of life and potentially delay the onset of osteoarthritis. For other patients, however, surgery is contraindicated because significant cartilage damage has already occurred...
April 30, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28066744/arthroscopic-release-of-iliopsoas-tendon-in-patients-with-femoro-acetabular-impingement-clinical-results-at-mid-term-follow-up
#19
Rodrigo Mardones, Alessio Giai Via, Alexander Tomic, Claudio Rodriguez, Matias Salineros, Marcelo Somarriva
BACKGROUND: The iliopsoas tendon is a recognized cause of extra-articular hip pain, and tenotomy has been described as an effective treatment in patients who do not respond to conservative treatments. Endoscopic release showed higher success rate, lower recurrence, fewer complications compared to open surgery. The aim of the study is to report the results at a mean of 4 years follow-up of a series of patients affected by femoroacetabular impingement (FAI) and an associated iliopsoas tendinopathy, treated with hip arthroscopy and transcapsular tendon release...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28066739/hip-instability-a-review-of-hip-dysplasia-and-other-contributing-factors
#20
REVIEW
Matthew J Kraeutler, Tigran Garabekyan, Cecilia Pascual-Garrido, Omer Mei-Dan
BACKGROUND: Hip instability has classically been associated with developmental dysplasia of the hip (DDH) in newborns and children. However, numerous factors may contribute to hip instability in children, adolescents, and adults. PURPOSE: This review aims to concisely present the literature on hip instability in patients of all ages in order to guide health care professionals in the appropriate diagnosis and treatment of the various disorders which may contribute to an unstable hip...
July 2016: Muscles, Ligaments and Tendons Journal
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