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Femoral impingement

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https://www.readbyqxmd.com/read/29137665/treatment-for-lateral-patellar-impingement-syndrome-with-arthroscopic-lateral-patelloplasty-a-bidirectional-cohort-study
#1
Tianhao Wu, Shiyu Tang, Fei Wang
BACKGROUND: Anterior knee pain is one of the most common musculoskeletal complaints of young patients. We notice that some patients had normal femoral trochlear, medial and lateral patellar retinaculum, and special patellar morphology, which resulted in a series of symptoms in the flexion of the knee due to the impingement of the lateral articular surface of the patella with the femur. We firstly termed this pathologic process as lateral patellar impingement syndrome (LPIS). This ambispective cohort study was to explore the curative effect of arthroscopic lateral patelloplasty for early LPIS...
November 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29135610/meralgia-paresthetica-after-spine-surgery-on-the-jackson-table
#2
Nitin Agarwal, Jaydev B Mistry, Preeya V Khandge, David R Hansberry, Ira M Goldstein
Meralgia paresthetica is a non-life-threatening neurological disorder characterized by numbness, tingling, and burning pain over the anterolateral thigh due to impingement of the lateral femoral cutaneous nerve. This disorder has been seen in patients with diabetes mellitus and obesity, but has also been observed in patients after procedures such as posterior spine surgery, iliac crest bone grafts, lumbar disk surgery, hernia repair, appendectomies, and pelvic osteotomies that ultimately lead to compression or damage to the lateral femoral cutaneous nerve...
November 10, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29126367/t2-mapping-of-acetabular-cartilage-in-patients-with-femoroacetabular-impingement-at-3-tesla-comparative-analysis-with-arthroscopic-findings
#3
Tobias Hesper, Christina Neugroda, Christoph Schleich, Gerald Antoch, Harish Hosalkar, Rüdiger Krauspe, Christoph Zilkens, Bernd Bittersohl
Objective To evaluate the diagnostic accuracy of T2*-mapping for detecting acetabular cartilage damage in patients with symptomatic femoroacetabular impingement (FAI). Design A total of 29 patients (17 females, 12 males, mean age 35.6 ± 12.8 years, mean body mass index 25.1 ± 4.1 kg/m(2), 16 right hips) with symptomatic FAI underwent T2* MRI and subsequent hip arthroscopy. T2* values were obtained by region of interest analysis in seven radially reformatted planes around the femoral neck (anterior, anterior-superior, superior-anterior, superior, superior-posterior, posterior-superior, posterior)...
November 1, 2017: Cartilage
https://www.readbyqxmd.com/read/29116328/correlation-between-femoroacetabular-impingement-and-hamstring-tendon-pathology-on-magnetic-resonance-imaging-and-arthrography
#4
Nakul Talathi, Scott LaValva, Angel Lopez-Garib, John D Kelly, Viviane Khoury
Femoroacetabular impingement (FAI) is an abnormality of the femoral head or acetabulum that leads to an increased incidence of cartilaginous injury in the hip. Femoroacetabular impingement has been associated with several structural abnormalities, including osteitis pubis and hip flexor dysfunction. The authors propose that, additionally, FAI may lead to increased damage of the hamstring tendon due to the additional stress placed on the tendon from the limited range of motion of the hip. The authors conducted a retrospective matched-pair study with the magnetic resonance imaging and magnetic resonance arthrography images of 40 patients' hamstrings with FAI and 45 age-matched controls...
November 1, 2017: Orthopedics
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
#5
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/29100766/central-acetabular-impingement-is-associated-with-femoral-head-and-ligamentum-teres-damage-a-cross-sectional-matched-pair-analysis-of-patients-undergoing-hip-arthroscopy-for-acetabular-labral-tears
#6
Parth Lodhia, Chengcheng Gui, Timothy J Martin, Sivashankar Chandrasekaran, Carlos Suarez-Ahedo, Benjamin G Domb
PURPOSE: The primary purpose of this study was to report the prevalence of femoral head articular damage in patients with a central acetabular osteophyte (CAO) that was identified during hip arthroscopy and compare it with that in a matched control group without a CAO. A secondary purpose was to identify rates of coexisting intra-articular pathology in both patient groups. METHODS: Intraoperative data were collected prospectively on all hip arthroscopy patients at our institution between 2008 and 2015...
October 31, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29081704/influence-of-age-on-parameters-for-femoroacetabular-impingement-and-hip-dysplasia-in-x-rays
#7
Ulf-Krister Hofmann, Ingmar Ipach, Ina-Christine Rondak, Roland Syha, Marco Götze, Falk Mittag
OBJECTIVE: While several radiographic parameters have been established to describe the geometry and pathology of the hip, their reference values and clinical significance remain a matter of dispute. The present study tests the hypothesis that age has a relevant impact on radiographic hip parameters. METHOD: Pelvic antero-posterior views were measured for CE angle, Sharp's angle, acetabular depth-to-width ratio, femoral head extrusion index, roof obliquity, caput-collum-diaphyseal (CCD) angle, and Murray's femoral head ratio, and the values obtained were correlated with age...
September 2017: Acta Ortopedica Brasileira
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
#8
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
#9
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
#10
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
#11
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/28993085/can-anatomic-measurements-of-stem-anteversion-angle-be-considered-as-the-functional-anteversion-angle
#12
Keisuke Uemura, Masaki Takao, Yoshito Otake, Koki Koyama, Futoshi Yokota, Hidetoshi Hamada, Takashi Sakai, Yoshinobu Sato, Nobuhiko Sugano
BACKGROUND: Stem anteversion angle is important in the combined anteversion theory to avoid implant impingement after total hip arthroplasty (THA). However, anatomic measurements of stem anteversion angle may not represent functional anteversion of the femur if the femur undergoes axial rotation. Herein, the femoral rotational angle (FRA) was measured in supine and standing positions before and after THA to evaluate the difference between anatomic and functional measurements. METHODS: A total of 191 hips (174 patients) treated with THA for osteoarthritis were analyzed in this retrospective, case-controlled study...
September 21, 2017: Journal of Arthroplasty
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
#13
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/28990125/differences-in-range-of-motion-with-the-same-combined-anteversion-after-total-hip-arthroplasty
#14
Takaaki Ohmori, Tamon Kabata, Yoshitomo Kajino, Tadashi Taga, Kazuhiro Hasegawa, Daisuke Inoue, Takashi Yamamoto, Tomoharu Takagi, Junya Yoshitani, Takuro Ueno, Hiroyuki Tsuchiya
PURPOSE: We investigated the various impingement angles (including both bony and prosthetic impingement) and impingement types that can occur after THA, even when the same combined anteversion parameter is used. We also investigated the relationship between impingement angle and acetabular morphology or femoral anteversion. METHODS: We evaluated 83 patients with no hip arthritis. We divided them into six groups according to acetabular CE angle (≤15°, >15-≤25°, and >25°) and femoral anteversion (≤20° and >20°)...
October 9, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28971081/prevalence-of-femoroacetabular-impingement-morphology-in-asymptomatic-youth-soccer-players-magnetic-resonance-imaging-study-with-clinical-correlation
#15
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
#16
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/28969815/the-influence-of-squat-kinematics-and-cam-morphology-on-acetabular-stress
#17
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/28950859/protocol-for-a-multi-centre-randomised-controlled-trial-comparing-arthroscopic-hip-surgery-to-physiotherapy-led-care-for-femoroacetabular-impingement-fai-the-australian-fashion-trial
#18
Nicholas J Murphy, Jillian Eyles, Kim L Bennell, Megan Bohensky, Alexander Burns, Fraser M Callaghan, Edward Dickenson, Camdon Fary, Stuart M Grieve, Damian R Griffin, Michelle Hall, Rachel Hobson, Young Jo Kim, James M Linklater, David G Lloyd, Robert Molnar, Rachel L O'Connell, John O'Donnell, Michael O'Sullivan, Sunny Randhawa, Stephan Reichenbach, David J Saxby, Parminder Singh, Libby Spiers, Phong Tran, Tim V Wrigley, David J Hunter
BACKGROUND: Femoroacetabular impingement syndrome (FAI), a hip disorder affecting active young adults, is believed to be a leading cause of hip osteoarthritis (OA). Current management approaches for FAI include arthroscopic hip surgery and physiotherapy-led non-surgical care; however, there is a paucity of clinical trial evidence comparing these approaches. In particular, it is unknown whether these management approaches modify the future risk of developing hip OA. The primary objective of this randomised controlled trial is to determine if participants with FAI who undergo hip arthroscopy have greater improvements in hip cartilage health, as demonstrated by changes in delayed gadolinium-enhanced magnetic resonance imaging (MRI) of cartilage (dGEMRIC) index between baseline and 12 months, compared to those who undergo physiotherapy-led non-surgical management...
September 26, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28941162/an-in-vitro-simulation-model-to-assess-the-severity-of-edge-loading-and-wear-due-to-variations-in-component-positioning-in-hip-joint-replacements
#19
O O'Dwyer Lancaster-Jones, S Williams, L M Jennings, J Thompson, G H Isaac, J Fisher, M Al-Hajjar
The aim of this study was to develop a preclinical in vitro method to predict the occurrence and severity of edge loading condition associated with the dynamic separation of the centres of the head and cup (in the absence of impingement) for variations in surgical positioning of the cup. Specifically, this study investigated the effect of both the variations in the medial-lateral translational mismatch between the centres of the femoral head and acetabular cup and the variations in the cup inclination angles on the occurrence and magnitude of the dynamic separation, the severity of edge loading, and the wear rate of ceramic-on-ceramic hip replacement bearings in a multi-station hip joint simulator during a walking gait cycle...
September 23, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
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
#20
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
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