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Cam impingement

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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...
October 1, 2017: 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
#11
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
#12
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
https://www.readbyqxmd.com/read/28970988/arthroscopic-focal-subspinal-decompression-and-management-of-pincer-type-femoroacetabular-impingement
#13
Renato Locks, Hajime Utsunomiya, Ioanna Bolia, Sandeep Mannava, Jorge Chahla, Marc J Philippon
Femoroacetabular impingement syndrome is a common hip pathology significantly affecting not only the intra- and extra-articular structures but also the biomechanical function of the joint. Cam and pincer bony lesions have been extensively studied. However, during recent years, other types of extra-articular impingement between the pelvic and femoral bone have been investigated. When a prominent or morphologically abnormal anterior-inferior iliac spine (AIIS) impinges repetitively on the femoral side during motion, the subspinal acetabular region becomes prominent and extends toward the intra-articular part of the joint...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28969816/fluoroscopy-learning-curve-in-hip-arthroscopy-a-single-surgeon-s-experience
#14
Kevin M Smith, Neil L Duplantier, Kimbelyn H Crump, Domenica A Delgado, Stephanie L Sullivan, Patrick C McCulloch, Joshua D Harris
PURPOSE: To determine if (1) absorbed radiation dose and (2) fluoroscopy time decreased with experience over the first 100 cases of a single surgeon's hip arthroscopy practice. METHODS: Subjects who underwent hip arthroscopy for symptomatic femoroacetabular impingement and labral injury were eligible for analysis. Inclusion criteria included the first 100 subjects who underwent hip arthroscopy by a single surgeon (December 2013 to December 2014). Subject demographics, procedure details, fluoroscopy absorbed dose (milligray [mGy]), and time were recorded...
October 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28969815/the-influence-of-squat-kinematics-and-cam-morphology-on-acetabular-stress
#15
Jennifer J Bagwell, Christopher M Powers
PURPOSE: To evaluate the effect of varying degrees of simulated cam morphology on acetabular stress magnitude and location using a finite element model with 1 subject that incorporates population-specific hip/pelvis kinematics during a squat task. METHODS: A reference model of the hip joint was created from magnetic resonance images obtained from 1 asymptomatic 28-year-old man without femoroacetabular impingement (FAI) morphology or hip dysplasia (alpha angle 41...
October 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28949248/characteristics-and-outcomes-of-arthroscopic-femoroacetabular-impingement-surgery-in-the-national-football-league
#16
Benedict U Nwachukwu, Asheesh Bedi, Ajay Premkumar, Pete Draovitch, Bryan T Kelly
BACKGROUND: Previous studies have reported that hip abnormalities may account for 10% of injuries in professional football players. The effect of femoroacetabular impingement (FAI) and arthroscopic FAI surgery in National Football League (NFL) athletes has not been well studied. PURPOSE: To investigate the effect of arthroscopic FAI surgery on return to play (RTP) and RTP performance in NFL players. STUDY DESIGN: Cohort study; Level of evidence, 3...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28948032/preoperative-physical-examination-and-imaging-of-femoroacetabular-impingement-prior-to-hip-arthroscopy-a-systematic-review
#17
REVIEW
Chloe E Haldane, Seper Ekhtiari, Darren de Sa, Nicole Simunovic, Olufemi R Ayeni
The purpose of this systematic review is to report current preoperative assessment for femoroacetabular impingement (FAI) including physical examination and imaging modalities prior to hip arthroscopy, and report current imaging measures used in the diagnosis of FAI. The electronic databases MEDLINE, EMBASE and PubMed were searched and screened in duplicate for relevant studies. Data regarding patient demographics, non-operative treatment, preoperative assessment including physical examination and imaging prior to hip arthroscopy were abstracted...
August 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28937786/prevalence-of-femoral-and-acetabular-version-abnormalities-in-patients-with-symptomatic-hip-disease-a-controlled-study-of-538-hips
#18
Till D Lerch, Inga A S Todorski, Simon D Steppacher, Florian Schmaranzer, Stefan F Werlen, Klaus A Siebenrock, Moritz Tannast
BACKGROUND: Variations in femoral and acetabular version are becoming increasingly recognized as contributing factors to the development of hip pain in patients with femoroacetabular impingement (FAI) and hip dysplasia. It is still unknown what the true prevalence of these rotational abnormalities is in this patient population. PURPOSE: To determine (1) the prevalence of femoral version abnormalities in symptomatic hips with FAI and hip dysplasia, (2) the prevalence of combined abnormalities of femoral and acetabular version in these patients, and (3) which specific hip morphologies are associated with abnormalities of femoral version...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28918517/detecting-cam-type-deformities-on-plain-radiographs-what-is-the-optimal-lateral-view
#19
Christian Hipfl, Markus Titz, Catharina Chiari, Veronika Schöpf, Franz Kainberger, Reinhard Windhager, Stephan Domayer
PURPOSE: Radial magnetic resonance imaging (MRI) is the most accurate diagnostic tool in assessing cam-type femoroacetabular impingement. Plain radiographs, however, are useful for the initial diagnosis in the daily practice and there is still debate regarding the optimal lateral view. The purpose of this study was to investigate the reliability of detecting cam deformities using the frog-leg view or the 45° Dunn view by comparison with radial MRI. MATERIAL: 66 consecutive hips with plain radiographs (36 with AP and frog-leg views, 30 with AP and 45° Dunn views) and radial MRI were assessed...
September 16, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28915523/-biologic-reconstruction-of-full-sized-cartilage-defects-of-the-hip-a-guideline-from-the-dgou-group-clinical-tissue-regeneration-and-the-hip-committee-of-the-aga
#20
Stefan Fickert, Matthias Aurich, Dirk Albrecht, Peter Angele, Lorenz Büchler, Michael Dienst, Christoph Erggelet, Jürgen Fritz, Christoph Gebhart, Hans Gollwitzer, Moritz Kindler, Christoph Lampert, Henning Madry, Gregor Möckel, Phillip Niemeyer, Jörg Schröder, Christian Sobau, Gunter Spahn, Wolfgang Zinser, Stefan Landgraeber
Background Symptomatic pre-arthritic deformities such as femoroacetabular impingement (FAI) or hip dysplasia often lead to localised cartilage defects and subsequently to osteoarthritis. The present review of the working group "Clinical Tissue Regeneration" of the German Society of Orthopaedics and Trauma (DGOU) and the hip committee of the AGA (German speaking Society for Arthroscopy and Joint Surgery) provides an overview of current knowledge of the diagnosis and surgical treatment of cartilage defects, in order to infer appropriate therapy recommendations for the hip...
September 15, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
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