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Acetabular labrum

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https://www.readbyqxmd.com/read/27923602/patient-specific-chondrolabral-contact-mechanics-in-patients-with-acetabular-dysplasia-following-treatment-with-peri-acetabular-osteotomy
#1
Christine L Abraham, Spencer J Knight, Christopher L Peters, Jeffrey A Weiss, Andrew E Anderson
OBJECTIVE: Using a validated, patient-specific finite element (FE) modeling protocol, we evaluated cartilage and labrum (i.e. chondrolabral) mechanics before and after peri-acetabular osteotomy (PAO) to provide insight into the ability of this procedure to improve mechanics in dysplastic hips. DESIGN: Five patients with acetabular dysplasia were recruited in this case-controlled, prospective study. Models, which included anatomy for bone, cartilage, and labrum, were generated from computed tomography arthrography scans acquired before and after PAO...
December 3, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27921206/periacetabular-osteotomy-provides-higher-survivorship-than-rim-trimming-for-acetabular-retroversion
#2
Corinne A Zurmühle, Helen Anwander, Christoph E Albers, Markus S Hanke, Simon D Steppacher, Klaus A Siebenrock, Moritz Tannast
BACKGROUND: Acetabular retroversion can cause impaction-type femoroacetabular impingement leading to hip pain and osteoarthritis. It can be treated by anteverting periacetabular osteotomy (PAO) or acetabular rim trimming with refixation of the labrum. There is increasing evidence that acetabular retroversion is a rotational abnormality of the entire hemipelvis and not a focal overgrowth of the anterior acetabular wall, which favors an anteverting PAO. However, it is unknown if this larger procedure would be beneficial in terms of survivorship and Merle d'Aubigné scores in a midterm followup compared with rim trimming...
December 5, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27909680/anatomic-labral-repair-in-the-hip-using-a-knotless-tensionable-suture-anchor
#3
Carlos Suarez-Ahedo, Timothy J Martin, John P Walsh, Sivashankar Chandrasekaran, Parth Lodhia, Benjamin G Domb
To perform a proper labral repair, most surgeons use anchors to secure the labrum to the acetabular bone. We aim to describe a technique for labral repair with a knotless tensionable suture anchor. This technique uses a looped suture configuration, allowing selective tensioning of the repair to maintain the anatomic suction seal of the hip. The use of this technique is easily reproducible and reduces the surgical time compared with previous techniques.
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27890891/mid-term-clinical-results-of-versys-hip-system-zimmer-uncemented-total-hip-replacement-arthroplasty
#4
Hidemi Kawaji, Takuya Uematsu, Naoya Hoshikawa, Hiroshi Watanabe, Shinro Takai
: Recent reports suggest that uncemented total hip replacement arthroplasty (THR) results in favorable short- to mid-term clinical results. In the present study, we assessed the mid-term clinical results of VerSys Hip System uncemented THR at our hospital. MATERIALS AND METHODS: We studied patients who received THR using VerSys Hip System and who could be followed-up more than 3 years. Clinical records were used to retrospectively identify patient characteristics, which included age, gender, disease requiring THR, preoperative and postoperative pain score of the Japan Orthopaedic Association scoring system, range of motion in flexion and abduction, operating time, intraoperative complication, and additional operation or revision surgery...
2016: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/27876489/morphologic-changes-and-outcomes-after-arthroscopic-acetabular-labral-repair-evaluated-using-postoperative-computed-tomography-arthrography
#5
Jun-Il Yoo, Yong-Chan Ha, Young-Kyun Lee, Guen-Young Lee, Moon-Jib Yoo, Kyung-Hoi Koo
PURPOSE: To investigate smaller sized labra after acetabular labral repair comparing preoperative and postoperative computed tomography arthrography (CTA) and to assess the correlation between the anatomic changes and clinical outcomes. METHODS: The design and protocol of this retrospective study were approved by the institutional review board of our hospital. The inclusion criteria included age older than 18 years and hip pain associated with mechanical symptoms...
November 19, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27834459/histological-changes-of-the-acetabular-labrum-in-coxarthrosis-labral-degeneration-and-repair
#6
Marcin E Domzalski, Marek Synder, Anna Karauda, Wielislaw Papierz
INTRODUCTION: The current study was designed to describe types of histological changes within the acetabular labrum in the advanced stages of coxarthrosis, in patients requiring total hip arthroplasty (THA). METHODS: 77 consecutive patients without systemic disorders or prior hip surgery, scheduled for THA with 3 types of coxarthrosis: avascular necrosis (AVN), idiopathic, and dysplastic coxarthrosis were analysed. Patient's data: age, gender, side of the involvement, duration of the symptoms were recorded, and standard anteroposterior (AP) radiographic views of the pelvis were obtained...
November 9, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27832011/mri-assessment-of-the-importance-of-the-acetabular-labrum-a-comparative-radiographic-and-mri-study-in-children-s-hips
#7
P Gutiérrez Carbonell, M Ojeda Peña
: To study the correlation between radiograph [acetabular index (AI)] and MRI measurements of the angles of children's hips and the percentage of coverage that labrum provides to the acetabulum in healthy hips of children. The healthy hips of 38 children, of a mean age of 7.7 years, were studied using anteroposterior radiographs and coronal plane MRI. We used picture archiving and communication systems software to measure the AI in hip radiographs and the acetabular bone index (ABI) and acetabular labrum index (ALI) in hip MRIs...
November 9, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/27821103/a-comparison-of-multidisciplinary-team-residential-rehabilitation-with-conventional-outpatient-care-for-the-treatment-of-non-arthritic-intra-articular-hip-pain-in-uk-military-personnel-a-protocol-for-a-randomised-controlled-trial
#8
Russell J Coppack, James L Bilzon, Andrew K Wills, Ian M McCurdie, Laura Partridge, Alastair M Nicol, Alexander N Bennett
BACKGROUND: Non-arthritic hip disorders are defined as abnormalities of the articulating surfaces of the acetabulum and femur before the onset of osteoarthritis, including intra-articular structures such as the acetabular labrum and chondral surfaces. Abnormal femoroacetabular morphology is commonly seen in young men who constitute much of the UK military population. Residential multidisciplinary team (MDT) rehabilitation for patients with musculoskeletal injuries has a long tradition in the UK military, however, there are no studies presenting empirical data on the efficacy of a residential MDT approach compared with individualised conventional outpatient treatment...
November 8, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27777919/hip-arthroscopy-for-incarcerated-acetabular-labrum-following-reduction-of-traumatic-hip-dislocation-three-case-reports
#9
Jung-Mo Hwang, Deuk-Soo Hwang, Woo-Yong Lee, Chang-Kyun Noh, Long Zheng
Traumatic hip fracture-dislocations are associated with chondral and labral pathology as well as loose bodies that can be incarcerated in the hip joint. Incarceration, such as interposed labrum between acetabulum and femoral head that is not readily visualized preoperatively, is a rare but important cause of pain and can potentially be a source for early degeneration and progression to osteoarthritis. We present three cases, arthroscopic surgery of incarcerated acetabular osseo-labral fragment following reduction of traumatic hip fracture-dislocation...
September 2016: Hip & Pelvis
https://www.readbyqxmd.com/read/27751174/acetabular-labrum-blood-flow-in-developmental-dysplasia-of-the-hip-an-intraoperative-in-vivo-study-using-laser-doppler-flowmetry
#10
So Minokawa, Masatoshi Naito, Koichi Kinoshita, Takuaki Yamamoto
BACKGROUND: The vascular supply to the acetabular labrum is important in the treatment of labral lesions. However, in vivo blood flow measurements in the acetabular labrum have not been described in the literature. The purpose of this study was to examine this blood flow in vivo using laser Doppler flowmetry (LDF) in patients with acetabular dysplasia. METHODS: Periacetabular osteotomy combined with arthroscopy was performed in 47 consecutive patients (three males, 44 females; mean age at surgery, 35...
October 17, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27744594/labral-reattachment-in-femoroacetabular-impingement-surgery-results-in-increased-10-year-survivorship-compared-with-resection
#11
Helen Anwander, Klaus A Siebenrock, Moritz Tannast, Simon D Steppacher
BACKGROUND: Since the importance of an intact labrum for normal hip function has been shown, labral reattachment has become the standard method for open or arthroscopic treatment of hips with femoroacetabular impingement (FAI). However, no long-term clinical results exist evaluating the effect of labral reattachment. A 2-year followup comparing open surgical treatment of FAI with labral resection versus reattachment was previously performed at our clinic. The goal of this study was to report a concise followup of these patients at a minimum of 10 years...
October 15, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27744000/microinstability-of-the-hip-a-review
#12
A Dangin, N Tardy, M Wettstein, O May, N Bonin
With the development of conservative hip surgery techniques, new entities such as microinstability have been identified. Microinstability is a painful supra-physiological mobility of the hip. It results from the association of architectural and functional abnormalities impairing joint stability. These risk factors concern hip joint bone architecture or peri-articular soft tissues. Bone abnormalities are identified on hip assessment parameters. Soft tissues also play a key role in the static and dynamic stability of the hip: the joint capsule, labrum, ligamentum teres and adjacent myotendinous structures affect joint coaptation; any abnormality or iatrogenic lesion concerning these structures may constitute a risk factor for microinstability...
October 12, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27726754/imaging-of-sports-related-injuries-of-the-lower-extremity-in-pediatric-patients
#13
M Cody O'Dell, Diego Jaramillo, Laura Bancroft, Laura Varich, Gregory Logsdon, Sabah Servaes
With increasing participation and intensity of training in youth sports in the United States, the incidence of sports-related injuries is increasing, and the types of injuries are shifting. In this article, the authors review sports injuries of the lower extremity, including both acute and overuse injuries, that are common in or specific to the pediatric population. Common traumatic injuries that occur in individuals of all ages (eg, tears of the acetabular labrum and anterior cruciate ligament) are not addressed, although these occur routinely in pediatric sports...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27718121/what-are-the-risk-factors-for-revision-surgery-after-hip-arthroscopy-for-femoroacetabular-impingement-at-7-year-followup
#14
Pascal Cyrill Haefeli, Christoph Emanuel Albers, Simon Damian Steppacher, Moritz Tannast, Lorenz Büchler
BACKGROUND: In recent years, surgical treatment of symptomatic femoroacetabular impingement (FAI) has been increasingly performed using arthroscopy. Bony pathomorphologies and damage to the labrum as well as cartilage defects can be addressed with comparable results to open surgery with overall less surgery-related complications. Despite the increasing importance of hip arthroscopy, however, reports on midterm clinical and radiographic outcomes and comparison to open surgical hip dislocation are scarce...
October 7, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27695906/is-there-a-distinct-pattern-to-the-acetabular-labrum-and-articular-cartilage-damage-in-the-non-dysplastic-hip-with-instability
#15
Kotaro R Shibata, Shuichi Matsuda, Marc R Safran
PURPOSE: The purpose of this study was to determine whether or not there is a distinct pattern of injury to the acetabular labrum and/or cartilage in the hip with instability without bony dysplasia. METHODS: Surgical records and intra-operative images of consecutive patients who underwent primary hip arthroscopy for femoroacetabular impingement (FAI) and/or hip instability by the senior author from April 2007 to December 2014 were retrospectively reviewed. Pathological changes were documented and charted on a novel diagram of the acetabulum, and classified into eight patterns corresponding to the lesion's location and size...
October 1, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27636911/hip-morphology-in-mps-1h-patients-an-mri-based-study
#16
Sandra R Breyer, Nicole Muschol, Mona Schmidt, Martin Rupprecht, Kornelia Babin, Jochen Herrmann, Ralf Stücker
BACKGROUND: Hip dysplasia is common in mucopolysaccharidosis type-1H (MPS-1H) patients, but its morphology is not completely understood. No magnetic resonance imaging (MRI)-based studies have been reported in the literature. The purpose of this study was to improve knowledge of hip dysplasia pathology by describing the hip morphology of these patients in MRI scans, plain radiographs, and arthrograms. METHODS: We performed a retrospective chart review of 18 MPS-1H patients...
September 15, 2016: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/27583157/lateral-acetabular-labral-length-is-inversely-related-to-acetabular-coverage-as-measured-by-lateral-center-edge-angle-of-wiberg
#17
Brian D Petersen, Bryan Wolf, Jeffrey R Lambert, Carolyn W Clayton, Deborah H Glueck, Mary Kristen Jesse, Omer Mei-Dan
Patients with developmental dysplasia of the hip often have compensatory labral hypertrophy, which presumably lends stability to an unstable joint. Conversely, patients with acetabular overcoverage may have small or ossified labra. The purpose of this study is to explore the interaction of labral length with the degree of acetabular hip coverage. A retrospective cohort of patients with hip pain presenting to a hip preservation center, who had undergone hip magnetic resonance imaging and AP pelvis radiographs were studied...
August 2016: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/27581790/hip-labral-repair-options-and-outcomes
#18
REVIEW
Joshua D Harris
The importance of the acetabular labrum has been increasingly recognized, playing a critical role in both normal anatomy and abnormal pathology of the hip joint. The labrum increases acetabular surface area and volume, providing a stable and durable articulation. The fibrocartilaginous composition affords a tissue capable of a lifetime of normal function in the absence of significant osseous pathology. In the setting of femoroacetabular impingement (FAI) or dysplasia, bony biomechanics may cause labral injury, which may translate to patient symptoms...
December 2016: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/27580734/increased-hip-stresses-resulting-from-a-cam-deformity-and-decreased-femoral-neck-shaft-angle-during-level-walking
#19
K C Geoffrey Ng, Giulia Mantovani, Mario Lamontagne, Michel R Labrosse, Paul E Beaulé
BACKGROUND: It is still unclear why many individuals with a cam morphology of the hip do not experience pain. It was recently reported that a decreased femoral neck-shaft angle may also be associated with hip symptoms. However, the effects that different femoral neck-shaft angles have on hip stresses in symptomatic and asymptomatic individuals with cam morphology remain unclear. QUESTIONS/PURPOSES: We examined the effects of the cam morphology and femoral neck-shaft angle on hip stresses during walking by asking: (1) Are there differences in hip stress characteristics among symptomatic patients with cam morphology, asymptomatic individuals with cam morphology, and individuals without cam morphology? (2) What are the effects of high and low femoral neck-shaft angles on hip stresses? METHODS: Six participants were selected, from a larger cohort, and their cam morphology and femoral neck-shaft angle parameters were measured from CT data...
August 31, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27462534/arthroscopic-labrum-reconstruction-in-the-hip-using-the-indirect-head-of-rectus-femoris-as-a-local-graft-surgical-technique
#20
Zachary T Sharfman, Eyal Amar, Thomas Sampson, Ehud Rath
The importance of the acetabular labrum has been well documented for the health and function of the hip joint. Labral reconstruction has proven effective but often requires the use of a cadaveric allograft or auto graft from the fascia lata or gracilis. The indirect head of the rectus femoris is in close proximity with the anterior superior acetabulum, which is the most common site of labral tears. Using the indirect head of the rectus femoris as a local graft minimizes surgical invasiveness by mitigating the need to harvest the graft from a different location, in case of an autograft, and by minimizing donor site morbidity and damage to local tissues...
April 2016: Arthroscopy Techniques
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