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Cam impingement

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https://www.readbyqxmd.com/read/29323746/the-acetabular-and-spino-pelvic-morphologies-are-different-in-subjects-with-symptomatic-cam-femoro-acetabular-impingement
#1
George Grammatopoulos, Andrew D Speirs, K C Geoffrey Ng, Charles Riviere, Kawan S Rakhra, Mario Lamontagne, Paul E Beaule
Acetabular and spino-pelvic (SP) morphological parameters are important determinants of hip joint dynamics. This prospective study aimed to determine whether acetabular and SP morphological differences exist between hips with and without cam morphology and between symptomatic and asymptomatic hips with cam morphology. A cohort of 67 patients/hips was studied. Hips were either asymptomatic with no cam (Controls, n = 18), symptomatic with cam (n = 26) or asymptomatic with cam (n = 23). CT-based quantitative assessments of femoral, acetabular, pelvic and spino-pelvic parameters were performed...
January 11, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29299653/arthroscopic-versus-open-treatment-of-cam-type-femoro-acetabular-impingement-retrospective-cohort-clinical-study
#2
Paulo A Rego, Vasco Mascarenhas, Filipe S Oliveira, Pedro C Pinto, Eduardo Sampaio, Jacinto Monteiro
PURPOSE: The purpose of this study was to determine if there were significant differences between patients submitted to hip arthroscopy (HA) and surgical hip dislocation (SHD) to treat femoro-acetabular impingement (FAI), which variables were significantly associated with hip function before surgery and those predictive of the applied functional outcome scale and its variation rate after surgery. METHODS: We selected 198 patients treated with HA or SHD with a mean follow-up of 59 months...
January 3, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29289395/modified-false-profile-radiograph-of-the-hip-provides-better-visualization-of-the-anterosuperior-femoral-head-neck-junction
#3
Penny R Atkins, Evangeline F Kobayashi, Andrew E Anderson, Stephen K Aoki
PURPOSE: The purpose of this study was to quantify the amount of internal femur rotation required to visualize the 12 to 3 o'clock positions of the femoral head-neck junction as seen on the false-profile radiograph. METHODS: Computed tomography (CT) images of the femur were retrospectively reviewed from control subjects and cam femoroacetabular impingement (FAI) patients. Using an automatically determined clockface, the positions between 12 and 3 o'clock were determined...
December 27, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29250340/revision-hip-arthroscopy-findings-and-outcomes
#4
F Winston Gwathmey, Kay S Jones, J W Thomas Byrd
The purpose of this study is to report on the operative findings and the outcomes of revision hip arthroscopy. All hip arthroscopy cases are prospectively assessed with a modified Harris Hip Score (mHHS) preoperatively and postoperatively. This study consists of 190 consecutive hips (186 patients) who underwent revision arthroscopy with minimum 2-year follow-up. There were 69 males and 117 females with a mean age of 32.7 (14-64). The mean time from index to revision procedure was 24.5 months (3-146). Common diagnoses included labral tears (102) and unaddressed or residual femoroacetabular impingement (FAI) (49 cam, 11 pincer, and 20 combined)...
December 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/29218684/feasibility-of-arthroscopic-autologous-chondrocyte-implantation-in-the-hip-using-an-injectable-hydrogel
#5
Steffen Thier, Florian Baumann, Christel Weiss, Stefan Fickert
INTRODUCTION: In the long term the treatment of articular cartilage defects of the hip has the most direct impact on the postoperative outcome and should diminish degenerative changes caused by different pathologies. The purpose of this prospective feasibility study is to describe technical aspects of arthroscopic, injectable autologous chondrocyte implantation in the hip and to report the short-term outcome. METHODS: Full-thickness cartilage defects of 13 patients were treated arthroscopically with an injectable autologous chondrocyte transplantation product (Novocart Inject, Tetec) in a 2-step surgical procedure...
December 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29218683/comparison-of-mri-ct-dunn-45%C3%A2-and-dunn-90%C3%A2-alpha-angle-measurements-in-femoroacetabular-impingement
#6
Kevin M Smith, Brayden J Gerrie, Patrick C McCulloch, David M Lintner, Joshua D Harris
PURPOSE: To determine if a significant difference existed among alpha angle measurements between 4 imaging techniques, axial oblique CT and MRI, Dunn 45° and Dunn 90° plain radiographs, in patients with symptomatic cam femoroacetabular impingement (FAI) and labral tear. METHODS: A single-surgeon prospective radiographic analysis of consecutive non-arthritic and non-dysplastic patients with symptomatic FAI and labral tears who underwent surgery was performed. Alpha angle was measured using standard techniques as described by Nötzli...
December 4, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29216704/-prevalence-of-x-ray-signs-of-femoroacetabular-impingement-in-mexican-population
#7
R Gutiérrez-Ramos, S A Ávalos-Calderón, L A Bahena-Peniche
BACKGROUND: Femoroacetabular impingement (FAI) is a suggested diagnosis for pain in the hip in the absence of other apparent causes. It is thought to be a cause of progressive arthrosis of the hip. Our objective was to determine the prevalence of radiographic data of FAI in the adult population without hip pathology over a period of six months. MATERIAL AND METHODS: Analytical, observational, multicentric, ambispective and transverse study based on digital X-rays analysis...
May 2017: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/29195753/ultrasound-determination-of-the-femoral-head-neck-alpha-angle
#8
D J Robinson, S Lee, P Marks, M E Schneider
The femoral head-neck alpha angle is used to quantify the degree of femoral head asphericity in patients suspected of cam-type femoroacetabular impingement. The measurement was first performed using magnetic resonance imaging and, more recently, three-dimensional computed tomography (CT). We set out to determine whether the alpha angle could be reliably measured using ultrasound. Patients were recruited from a cohort presenting for CT of the hip. Alpha angles were calculated following the departmental protocol by institutionally accredited radiographers...
November 29, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29162364/is-there-an-association-between-noncontact-anterior-cruciate-ligament-injuries-and-decreased-hip-internal-rotation-or-radiographic-femoroacetabular-impingement-a-systematic-review
#9
REVIEW
Nickolas Boutris, Rory A Byrne, Domenica A Delgado, Timothy E Hewett, Patrick C McCulloch, David M Lintner, Joshua D Harris
PURPOSE: To perform a systematic review to determine if there is (1) an association between decreased hip internal rotation and anterior cruciate ligament (ACL) tear rates; (2) an association between radiographic femoroacetabular impingement (FAI) and ACL tear rates; and (3) biomechanical evidence demonstrating increased strain in the ACL of patients with decreased hip internal rotation. METHODS: A systematic review was performed using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines...
November 18, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29157844/prevalence-of-asymptomatic-femoroacetabular-impingement-in-turkey-cross-sectional-study
#10
Gökhan Polat, Koray Şahin, Ufuk Arzu, Alper Şükrü Kendirci, Mehmet Aşık
OBJECTIVES: Femoroacetabular impingement (FAI) is one of the causes of hip pain in young-adult patients. The purpose of our study is to determine the prevalence of radiological FAI findings in asymptomatic population in Turkey. METHODS: Trauma patients aged 18-65 years who applied to the emergency service between September 2015 and September 2016 were retrospectively evaluated for this study. After a preliminary study and power analysis, 2152 hips of the 1076 previously asymptomatic patients were evaluated radiologically with pelvis antero-posterior and frog-leg radiographs...
November 17, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29112800/the-association-of-femoroacetabular-impingement-and-delayed-gadolinium-enhanced-mri-of-cartilage-dgemric-a-population-based-study
#11
Yimeng Guo, Honglin Zhang, Hong Qian, David R Wilson, Hubert Wong, Morgan Barber, Bruce B Forster, John Esdaile, Jolanda Cibere
OBJECTIVE: 1) To assess the association of FAI and dGEMRIC T1 relaxation values (RV). 2) To evaluate whether subtypes of FAI (cam, pincer, mixed) are associated with region-specific dGEMRIC T1 RVs. METHODS: A population-based sample of Caucasian subjects with and without hip pain, aged 20-49, was selected through random digit dialing. A sample of 128 subjects underwent hip joint 3T dGEMRIC scans. Radiographic cam FAI was defined as an alpha angle >55°, while pincer FAI was defined by a lateral center edge angle >40° or a positive cross-over sign...
November 7, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/29110047/hip-shape-is-symmetric-non-dependent-on-limb-dominance-and-gender-specific-implications-for-femoroacetabular-impingement-a-3d-ct-analysis-in-asymptomatic-subjects
#12
Vasco V Mascarenhas, Paulo Rego, Pedro Dantas, Miguel Castro, Lennart Jans, Rui M Marques, Nélia Gouveia, Francisco Soldado, Olufemi R Ayeni, José G Consciência
OBJECTIVE: To determine the reference intervals (RefInt) of the quantitative morphometric parameters of femoroacetabular impingement (FAI) in asymptomatic hips with computed tomography (CT) and determine their dependence on age, side, limb dominance and sex. METHODS: We prospectively included 590 patients and evaluated 1111 hips with semi-automated CT analysis. We calculated overall, side- and sex-specific parameters for imaging signs of cam [omega and alpha angle (α°)] and pincer-type morphology [acetabular version (ACvers), lateral centre-edge angle (LCEA) and cranio-caudal coverage]...
November 6, 2017: European Radiology
https://www.readbyqxmd.com/read/29100773/predictors-of-clinically-suspected-intra-articular-hip-symptoms-and-prevalence-of-hip-pathomorphologies-presenting-to-sports-medicine-and-hip-preservation-orthopaedic-surgeons
#13
Christopher M Larson, Marc R Safran, David A Brcka, Zackary D Vaughn, M Russell Giveans, Rebecca M Stone
PURPOSE: The first purpose of the study was to evaluate the prevalence of various radiographic parameters and pathomorphologies for patients presenting with the diagnosis of hip pain. The second purpose of this study was to identify those pathomorphologies and radiographic parameters that were predictive of clinically suspected intra-articular and hip joint-related symptoms. METHODS: A total of 998 hips (499 patients, 228 males, 271 females, mean age 38 years) presented to 2 orthopaedic surgeons with the diagnosis of hip pain...
October 31, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29080059/-cartilage-regeneration-surgery-on-the-hip-what-is-feasible
#14
REVIEW
Stefan Landgraeber, Marcus Jäger, Stefan Fickert
Localized cartilage defects at the hip are mainly caused by pre-arthritic deformities, particularly by cam-type femoroacetabular impingement (FAI). Timely elimination of symptomatic deformities can prevent further progression such as cartilage defects. As the defects mostly occur in the anterolateral part of the acetabulum, they can be easily treated either by open surgery or by arthroscopy. To date the most effective methods of treatment are bone marrow stimulation, with or without a covering of biomaterials, and autologous chondrocyte transplantation...
November 2017: Der Orthopäde
https://www.readbyqxmd.com/read/29061495/femoral-osteochondroplasty-can-be-performed-effectively-without-the-risk-of-avascular-necrosis-or-femoral-neck-fractures-in-an-experimental-ovine-fai-model
#15
F Schmaranzer, L Arendt, T D Lerch, S D Steppacher, K Nuss, N Wolfer, H E Dawson, B von Rechenberg, P R Kircher, M Tannast
OBJECTIVE: The experimental induction of cam-type femoroacetabular impingement (FAI) in sheep is established. To tap the full potential of this ovine model, one should be able to perform a femoral osteochondroplasty safely. This study was based on previous cadaver experiments on the blood supply to the ovine femoral head and on the biomechanical strength of the proximal femur following offset creation. We hypothesized that offset creation in this ovine FAI model does not lead to (1) avascular necrosis (AVN) of the ovine femoral head or (2) iatrogenic femoral neck fractures and (3) can be performed effectively...
October 20, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29037180/comparison-of-improved-range-of-motion-between-cam-type-femoroacetabular-impingement-and-borderline-developmental-dysplasia-of-the-hip-evaluation-by-virtual-osteochondroplasty-using-computer-simulation
#16
So Kubota, Yutaka Inaba, Naomi Kobayashi, Hyonmin Choe, Taro Tezuka, Tomoyuki Saito
BACKGROUND: While cam resection is essential to achieve a good clinical result with respect to femoroacetabular impingement (FAI), it is unclear whether it should also be performed in cases of borderline developmental dysplasia of the hip (DDH) with a cam deformity. The aim of this study was to evaluate improvements in range of motion (ROM) in cases of cam-type FAI and borderline DDH after virtual osteochondroplasty using a computer impingement simulation. METHODS: Thirty-eight symptomatic hips in 31 patients (11male and 20 female) diagnosed with cam-type FAI or borderline DDH were analyzed...
October 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29024801/population-based-prevalence-of-multiple-radiographically-defined-hip-morphologies-the-johnston-county-osteoarthritis-project
#17
R Raveendran, J L Stiller, C Alvarez, J B Renner, T A Schwartz, N K Arden, J M Jordan, A E Nelson
OBJECTIVE: To provide the first prevalence estimates of different radiographic hip morphologies relevant to dysplasia and femoroacetabular impingement in a well-characterized USA population-based cohort. METHODS: Cross-sectional data were from the baseline examination (1991-1997) of a large population-based prospective longitudinal cohort study (The Johnston County Osteoarthritis Project). HipMorf software (Oxford, UK) was used to assess hip morphology on anteroposterior (AP) pelvis radiographs...
October 9, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29024597/significant-chondrocyte-viability-is-present-in-acetabular-chondral-flaps-associated-with-femoroacetabular-impingement
#18
Vonda J Wright, Christopher Laurence McCrum, Hongshuai Li, Michael J Tranovich, Johnny Huard
BACKGROUND: Patients presenting with cam deformity of the femoral head and neck sustain repeated trauma to the articular cartilage of the superior acetabulum, with chondral delamination injuries found during hip arthroscopy. Two previous studies reveal conflicting chondrocyte viability data in these traumatic cartilage injuries. The full-thickness nature of flaps may suggest that chondrocytes residing in the cartilage flap matrix in the joint environment would remain viable despite shear trauma...
January 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28992426/predictors-of-poor-clinical-outcome-after-arthroscopic-labral-preservation-capsular-plication-and-cam-osteoplasty-in-the-setting-of-borderline-hip-dysplasia
#19
Akihisa Hatakeyama, Hajime Utsunomiya, Shoichi Nishikino, Shiho Kanezaki, Dean K Matsuda, Akinori Sakai, Soshi Uchida
BACKGROUND: Borderline developmental dysplasia of the hip (BDDH) is frequently diagnosed concurrently with cam impingement. While hip arthroscopy has advanced the treatment of hip joint pathology, including femoroacetabular impingement (FAI), arthroscopic treatment for FAI in the setting of BDDH remains a challenge amid a subset of patients. The risk factors of poor clinical results after hip arthroscopic labral preservation and FAI corrections in the setting of BDDH patients have not been well established...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28971081/prevalence-of-femoroacetabular-impingement-morphology-in-asymptomatic-youth-soccer-players-magnetic-resonance-imaging-study-with-clinical-correlation
#20
Anthony Kerbes Yépez, Marcelo Abreu, Bruno Germani, Carlos Roberto Galia
OBJECTIVE: To determine the prevalence of femoroacetabular impingement morphology (FAIM), cam- or pincer-type, by magnetic resonance imaging (MRI) in asymptomatic adolescent soccer players, and to evaluate the possible correlation between alterations on MRI and clinical examination findings. METHODS: A cross-sectional study was conducted to determine the prevalence of FAIM in asymptomatic youth soccer players aged 13-18 years. A total of 112 hips in 56 players (mean age 15...
2017: Revista Brasileira de Ortopedia
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