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https://www.readbyqxmd.com/read/28719561/arterial-topographic-anatomy-near-the-femoral-head-neck-perforation-with-surgical-relevance
#1
Paulo Rego, Vasco Mascarenhas, Diego Collado, Ana Coelho, Luis Barbosa, Reinhold Ganz
BACKGROUND: Knowledge of the vascular supply of the femoral head is crucial for hip-preserving surgical procedures. The critical area for reshaping cam deformity is at the retinacular vessel penetration, an area with ill-defined topographic anatomy. We performed a cadaver study of the extension of the lateral retinaculum near the head-neck junction, distribution of the arterial vascular foramina, and initial intracapital course of these vessels. METHODS: In 16 fresh proximal parts of the femur without head-neck deformities, the deep branch of the medial femoral circumflex artery was injected with gadolinium for magnetic resonance imaging (MRI) sequences to identify arterial structures...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28715906/t2-mapping-provides-information-that-is-statistically-comparable-to-an-arthroscopic-evaluation-of-acetabular-cartilage
#2
Patrick Morgan, Mikko J Nissi, John Hughes, Shabnam Mortazavi, Jutta Ellerman
Objectives The purpose of this study was to validate T2* mapping as an objective, noninvasive method for the prediction of acetabular cartilage damage. Methods This is the second step in the validation of T2*. In a previous study, we established a quantitative predictive model for identifying and grading acetabular cartilage damage. In this study, the model was applied to a second cohort of 27 consecutive hips to validate the model. A clinical 3.0-T imaging protocol with T2* mapping was used. Acetabular regions of interest (ROI) were identified on magnetic resonance and graded using the previously established model...
July 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28706807/labral-gracilis-tendon-allograft-reconstruction-and-cartilage-regeneration-scaffold-for-an-uncontained-acetabular-cartilage-defect-of-the-hip
#3
Laurel E MacInnis, Ahmed Al Hussain, Catherine Coady, Ivan H Wong
Hip cartilage injuries are very common, with rates as high as 50% having been reported in some series; abnormal femoral acetabular contact can result in a full-thickness cartilage defect or labral lesion. The prevalence of labral lesions can be as high as 55%. This Technical Note describes an arthroscopic technique to reconstruct an uncontained, full-thickness, focal cartilage defect of the acetabulum, with reconstruction of the missing labrum using a gracilis allograft and use of a biological liquid scaffold for cartilage reconstruction...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28688198/study-of-the-interactions-between-proximal-femur-3d-bone-shape-cartilage-health-and-biomechanics-in-patients-with-hip-osteoarthritis
#4
Valentina Pedoia, Michael A Samaan, Gaurav Inamdar, Matthew C Gallo, Richard B Souza, Sharmila Majumdar
In this study quantitative MRI and gait analysis were used to investigate the relationships between proximal femur 3D bone shape, cartilage morphology, cartilage biochemical composition, and joint biomechanics in subject with hip Osteoarthritis (OA). Eighty subjects underwent unilateral hip MR-imaging: T1ρ and T2 relaxation times were extracted through voxel based relaxometry and bone shape was assessed with 3D MRI-based statistical shape modeling. In addition, 3D gait analysis was performed in seventy-six of the studied subjects...
July 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28673601/femoroacetabular-impingement-causes-osteoarthritis-of-the-hip-by-migration-and-micro-instability-of-the-femoral-head
#5
Henk Eijer, Tom Hogervorst
Femoroacetabular impingement is the condition whereby parts of the proximal femur mechanically collide with the acetabular rim leading to adjacent and contrecoup acetabular damage. Evidence is growing that at least for cam impingement, and perhaps less so for pincer impingement, there is a relation to the development of osteoarthritis. It has been demonstrated that surgery for impingement can improve function and decrease pain. Intuitively, it would then make sense that surgical intervention would prevent further degeneration...
July 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28666512/obturator-internus-abscess-with-ipsilateral-septic-hip-arthritis
#6
Sang Hyun Park, Joo Yong Kim, Gyu Min Kong, Sang Myung Roh
Obturator internus muscle (OIM) abscess is an uncommon condition often mistaken for bacterial infection of the hip joint. If the OIM abscess is accompanied by a septic hip, it becomes more difficult to make a diagnosis. Surgical drainage of OIM abscess is difficult because it is located at a deep part of the pelvic cavity. Therefore, intravenous antibiotic therapy or image-guided aspiration were used as a treatment method instead of surgical drainage. When drainage of the abscess was inadequate, prolonged antibiotic treatment was necessary...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28652829/patellofemoral-pain-in-athletes
#7
REVIEW
Wolf Petersen, Ingo Rembitzki, Christian Liebau
Patellofemoral pain (PFP) is a frequent cause of anterior knee pain in athletes, which affects patients with and without structural patellofemoral joint (PFJ) damage. Most younger patients do not have any structural changes to the PFJ, such as an increased Q angle and a cartilage damage. This clinical entity is known as patellofemoral pain syndrome (PFPS). Older patients usually present with signs of patellofemoral osteoarthritis (PFOA). A key factor in PFPS development is dynamic valgus of the lower extremity, which leads to lateral patellar maltracking...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28650110/reproducibility-of-in-vivo-magnetic-resonance-imaging-t1-rho-and-t2-relaxation-time-measurements-of-hip-cartilage-at-3-0t-in-healthy-volunteers
#8
Angeline Nemeth, Lucy Di Marco, Florent Boutitie, Michael Sdika, Denis Grenier, Muriel Rabilloud, Olivier Beuf, Jean-Baptiste Pialat
PURPOSE: To assess the T1 ρ and T2 values in the hip cartilage of healthy volunteers and to evaluate the reproducibility of these measurements. MATERIALS AND METHODS: The right hip joint of 30 asymptomatic volunteers was explored with 3T magnetic resonance imaging (MRI). Quantitative 3D T1 ρ- and T2 -maps sequences were repeated twice with a 30-minute delay (immediate reproducibility). The same protocol was repeated 14 days later (short-term reproducibility). Immediate and short-term reproducibility were estimated using coefficients of variation and correlation concordance coefficients (CCC)...
June 26, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28630737/mesenchymal-stem-cell-therapy-in-the-treatment-of-hip-osteoarthritis
#9
Rodrigo Mardones, Claudio M Jofré, L Tobar, José J Minguell
This study was performed to investigate the safety and efficacy of the intra-articular infusion of ex vivo expanded autologous bone marrow-derived mesenchymal stem cells (BM-MSC) to a cohort of patients with articular cartilage defects in the hip. The above rationale is sustained by the notion that MSCs express a chondrocyte differential potential and produce extracellular matrix molecules as well as regulatory signals, that may well contribute to cure the function of the damaged hip joint. A cohort of 10 patients with functional and radiological evidences of hip osteoarthritis, either in one or both legs, was included in the study...
July 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28630723/outcome-after-arthroscopic-labral-surgery-in-patients-previously-treated-with-periacetabular-osteotomy-a-follow-up-study-of-43-patients
#10
Charlotte Hartig-Andreasen, Torsten G Nielsen, Bent Lund, Kjeld Søballe, Martin Lind
To identify factors predicting failure after hip arthroscopy in patients with previous periacetabular osteotomy (PAO) defined as a conversion to total hip replacement (THR) and to evaluate the patient reported outcome scores. Of 55 hips treated with hip arthroscopy after PAO from Aug 2008 to 2012 at Aarhus University Hospital, 43 hips were included (median age: 36.1 yrs, range 16.3-56.9 yrs). Indications were unacceptable pain, a positive FABER and impingement test and signs of labral damage on MR-arthrography...
January 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28630722/hip-arthroscopy-protocol-expert-opinions-on-post-operative-weight-bearing-and-return-to-sports-guidelines
#11
Ehud Rath, Zachary T Sharfman, Matan Paret, Eyal Amar, Michael Drexler, Nicolas Bonin
The objectives of this study are to survey the weight-bearing limitation practices and delay for returning to running and impact sports of high volume hip arthroscopy orthopedic surgeons. The study was designed in the form of expert survey questionnaire. Evidence-based data are scares regarding hip arthroscopy post-operative weight-bearing protocols. An international cross-sectional anonymous Internet survey of 26 high-volume hip arthroscopy specialized surgeons was conducted to report their weight-bearing limitations and rehabilitation protocols after various arthroscopic hip procedures...
January 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28620863/effect-of-ligamentum-teres-tear-on-the-development-of-joint-instability-and-articular-cartilage-damage-an-in-vivo-rabbit-study
#12
Jong Hun Baek, Young Soo Chun, Kee Hyung Rhyu, Wan Keun Yoon, Yoon Je Cho
The contribution of the ligamentum teres to the stabilization of the hip joint and the clinical influence of a compromised ligamentum teres are not well known. This study aimed to investigate joint stability and cartilage damage in a rabbit model by surgically inducing a complete ligamentum teres tear. Twenty adult New Zealand rabbits were used in this study. Rabbits were divided into complete ligamentum teres tear with capsulotomy (n = 9, group I) and capsulotomy only (n = 10, group II) groups. Unilateral surgery was performed on the left hip...
June 15, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28616978/synthesis-and-preclinical-characterization-of-a-cationic-iodinated-imaging-contrast-agent-ca4-and-its-use-for-quantitative-computed-tomography-of-ex-vivo-human-hip-cartilage
#13
Rachel C Stewart, Amit N Patwa, Hrvoje Lusic, Jonathan D Freedman, Michel Wathier, Brian D Snyder, Ali Guermazi, Mark W Grinstaff
Contrast agents that go beyond qualitative visualization and enable quantitative assessments of functional tissue performance represent the next generation of clinically useful imaging tools. An optimized and efficient large-scale synthesis of a cationic iodinated contrast agent (CA4+) is described for imaging articular cartilage. Contrast-enhanced CT (CECT) using CA4+ reveals significantly greater agent uptake of CA4+ in articular cartilage compared to that of similar anionic or nonionic agents, and CA4+ uptake follows Donnan equilibrium theory...
June 27, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28612705/treatment-of-acetabular-chondral-lesions-with-microfracture-technique
#14
Claudio Mella, Alvaro Nuñez, Ignacio Villalón
INTRODUCTION: Acetabular cartilage lesions are frequently found during hip arthroscopy. In the hip joint they mostly occur secondary to a mechanical overload resulting from a pre-existing deformity as hip dysplasia or femoroacetabular impingement (FAI). Lesions identified during arthroscopy can vary greatly from the earliest stages to the most advanced (full-thickness lesions). These lesions occur in the acetabulum in the early stages of joint damage. Microfractures are indicated in full-thickness chondral defects...
2017: SICOT-J
https://www.readbyqxmd.com/read/28612704/cartilage-status-in-fai-patients-results-from-the-danish-hip-arthroscopy-registry-dhar
#15
Bent Lund, Torsten Grønbech Nielsen, Martin Lind
INTRODUCTION: The femoroacetabular impingement (FAI) morphology is associated with specific cartilage lesions, which are suspected to be early stages of the osteoarthritic development, which can be the end result of FAI. The cartilage status of FAI afflicted hip joints at the time of arthroscopic management is not fully elucidated. This study from the Danish Hip Arthroscopy Registry (DHAR) will try to show data on the cartilage status from a large cohort. Data from a national registry potentially represent large amounts of population-based epidemiological information from multiple centres and surgeons...
2017: SICOT-J
https://www.readbyqxmd.com/read/28607941/radiographic-diagnosis-of-pincer-type-femoroacetabular-impingement-a-systematic-review
#16
REVIEW
Chanseok Rhee, Tina Le Francois, J W Thomas Byrd, Mark Glazebrook, Ivan Wong
BACKGROUND: Femoroacetabular impingement (FAI) is a well-recognized condition that causes hip pain and can lead to early osteoarthritis if not managed properly. With the increasing awareness and efficacy of operative treatments for pincer-type FAI, there is a need for consensus on the standardized radiographic diagnosis. PURPOSE: To perform a systematic review of the evidence regarding imaging modalities and radiographic signs for diagnosing pincer-type FAI. STUDY DESIGN: Systematic review; Level of evidence, 4...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28605000/hip-arthroscopy-in-patients-less-than-25-years-of-age-in-the-treatment-of-labral-tears-aetiology-and-clinical-outcomes
#17
Gillian Bayley, Stephane Poitras, Gillian Parker, Paul E Beaulé
BACKGROUND: Hip arthroscopy has evolved into a well-established and rapidly growing field of orthopedic surgery for the management of labral tears. The purpose of this study was to review clinical outcomes of patients less than 25 years of age undergoing hip arthroscopy for treatment of a labral tear. METHODS: From 2005 to 2013, 82 hips in 76 patients with mean age of 20.4 (16-25 range) underwent hip arthroscopy for treatment of labral-chondral damage. The Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) and hip disability and osteoarthritis outcome score (HOOS) were recorded at latest follow-up...
June 7, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28603741/outerbridge-grade-iv-cartilage-lesions-in-the-hip-identified-at-arthroscopy
#18
EDITORIAL
Michael McLean, Tony Whyte, Neal L Millar
No abstract text is available yet for this article.
May 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28590784/acetabular-chondral-lesions-in-hip-arthroscopy-relationships-between-grade-topography-and-demographics
#19
Carlos Suarez-Ahedo, Chengcheng Gui, Stephanie M Rabe, Sivashankar Chandrasekaran, Parth Lodhia, Benjamin G Domb
BACKGROUND: Hip pain remains a challenge given the multiple factors that can cause damage to the articular cartilage, such as traumatic injury, metabolic damage, and morphologic variations such as femoroacetabular impingement (FAI) and that can contribute to progression of osteoarthritis. However, a direct relationship between patient characteristics, the extent of acetabular chondral damage, and topologic characteristics of chondral lesions has not been established. PURPOSE: To compare the grade of acetabular chondral damage, measured in terms of acetabular labrum articular disruption (ALAD) classification, to the size and position of the chondral lesions, matching patients' demographic factors such as age and body mass index (BMI)...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28577713/a-critical-review-management-and-surgical-options-for-articular-defects-in-the-hip
#20
REVIEW
Eric C Makhni, Austin V Stone, Gift C Ukwuani, William Zuke, Tigran Garabekyan, Omer Mei-Dan, Shane J Nho
Patients with articular cartilage lesions of the hip may present with pain and symptoms that may be vague in nature and onset. Therefore, a thorough history and physical examination should be performed for every patient presenting with hip pain and/or disability. The management may be operative or nonoperative. Nonoperative management includes a trial of rest and/or activity modification, along with anti-inflammatory medications, physical therapy, and biologic injections. Operative treatment in the form of arthroscopic techniques continues to decrease morbidity and offer innovative solutions and new applications for microfracture, ACT, and AMIC...
July 2017: Clinics in Sports Medicine
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