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Femural impingement

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https://www.readbyqxmd.com/read/29245096/pre-and-post-operative-evaluation-of-pincer-type-femoroacetabular-impingement-during-squat-using-image-matching-techniques-a-case-report
#1
Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondo, Satoru Ikebe, Yasuharu Nakashima
INTRODUCTION: Although combined evaluation of hip joint kinematics and bone morphology is necessary for accurate assessment of femoroacetabular impingement (FAI), there are no report which evaluated hip kinematics of pincer-type FAI. PRESENTATION OF CASE: The pre- and postoperative hip kinematics of a 46-year-old man, with a pincer-type FAI during squat were evaluated using image-matching techniques and the rim-neck distance was measured. Preoperative simulation of squatting was also performed using patient's bone models and healthy subject's kinematics data to detect the overlapping lesion between the acetabulum and the femur...
December 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29216704/-prevalence-of-x-ray-signs-of-femoroacetabular-impingement-in-mexican-population
#2
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/29172934/early-osteoarthritis-after-slipped-capital-femoral-epiphysis
#3
Lukas Helgesson, Peter Kälebo Johansson, Ylva Aurell, Carl-Johan Tiderius, Johan Kärrholm, Jacques Riad
Background and purpose - Slipped capital femoral epiphysis (SCFE) results in a more or less pronounced deformity of the proximal femur, sometimes causing impingement and early osteoarthritis. We studied early osteoarthritis after SCFE and the association with deformity and self-reported hip function, pain, and quality of life. Patients and methods - 9 women and 16 men, mean age 32 (21-50) years, 19 with unilateral and 6 with bilateral SCFE, participated. All patients had primarily been operated by pin or screw with no attempt at reposition of the slip...
November 27, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/29157842/femoral-intertrochanteric-nail-fitn-a-new-short-version-design-with-an-anterior-curvature-and-a-geometric-match-study-using-post-operative-radiographs
#4
Shi-Min Chang, Sun-Jun Hu, Zhuo Ma, Shou-Chao Du, Ying-Qi Zhang
OBJECTIVE: Femoral intertrochanteric fractures are usually fixed with short, straight cephalomedullary nails. However, mismatches between the nail and the femur frequently occur, such as tip impingement and tail protrusion. The authors designed a new type of short femoral intertrochanteric nail (fitn) with an anterior curvature (length=19.5cm, r=120cm) and herein report the geometric match study for the first of 50 cases. METHODS: A prospective case series of 50 geriatric patients suffering from unstable intertrochanteric fractures (AO/OTA 31 A2/3) were treated...
November 17, 2017: Injury
https://www.readbyqxmd.com/read/29137665/treatment-for-lateral-patellar-impingement-syndrome-with-arthroscopic-lateral-patelloplasty-a-bidirectional-cohort-study
#5
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/29110905/extra-articular-hip-impingement-a-review-of-the-literature
#6
N Arévalo Galeano, N Santamaría Guinea, J Gredilla Molinero, M Grande Bárez
Hip and groin pain is a common clinical problem. Multiple causes can generate hip or groin pain, often sharing clinical and demographic characteristics. Diagnostic imaging tests play an important role in the etiological diagnosis. New forms of extra-articular hip impingement have recently been recognized as a cause of hip pain and limited function especially in young active patients. These conditions include ischiofemoral impingement, anterior inferior iliac spine and subspine impingement, iliopsoas impingement and greater trochanteric-pelvic impingement...
October 27, 2017: Radiología
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/28993085/can-anatomic-measurements-of-stem-anteversion-angle-be-considered-as-the-functional-anteversion-angle
#8
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/28939031/the-current-knowledge-on-spinopelvic-mobility
#9
REVIEW
Zachary C Lum, John G Coury, Jonathan L Cohen, Lawrence D Dorr
Recent studies may suggest that our conventional knowledge of risk factors for dislocation may need rethinking. Previous studies have demonstrated a large majority of total hip arthroplasty instability with acetabular cups implanted in safe zones. Recently discovered spinopelvic motion is a coordinated biomechanical relationship among acetabular anteversion, pelvic tilt, and lumbar lordosis. Classification includes normal, hypermobile, stiff, stuck standing, stuck sitting, and fused. Normal spinopelvic motion from standing to sitting occurs with hip flexion, posterior sacral tilt, and decreased lumbar lordosis to accommodate a flexed femur and prevent impingement and dislocation...
August 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28775337/femur-first-navigation-can-reduce-impingement-severity-compared-to-traditional-free-hand-total-hip-arthroplasty
#10
Arnab Palit, Mark A Williams, Glen A Turley, Tobias Renkawitz, Markus Weber
Impingement is a major source of dislocation and aseptic loosening in total hip arthroplasty (THA). We compared impingement free range of motion (ROM) using a novel computer navigated femur first approach to conventional THA. In addition, impingement between genders was also explored. In a retrospective analysis of 121 THA patients, subject-specific post-operative ROM was simulated using post-operative 3D-CT data, and compared with the benchmark ROM, essential for activities of daily living. Three parameters were defined to express both implant-to-implant (ITI) and bone-to-bone (BTB) impingement - coverage percentage, third angle, and impingement severity...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28764697/femur-first-surgical-technique-a-smart-non-computer-based-procedure-to-achieve-the-combined-anteversion-in-primary-total-hip-arthroplasty
#11
Mattia Loppini, Umile Giuseppe Longo, Emanuele Caldarella, Antonello Della Rocca, Vincenzo Denaro, Guido Grappiolo
BACKGROUND: The relevance of prosthetic component orientation to prevent dislocation and impingement following total hip arthroplasty (THA) has been widely accepted. We investigated the use of a non-computer-based surgery to address the reciprocal orientation of the acetabular and femoral components. METHODS: In the femur first technique, the cup is positioned relative to the stem. When the definitive antetorsion of femoral component is fixed, the cup is positioned in a compliant anteversion to the stem...
August 1, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28736124/implications-of-three-dimensional-modeling-of-the-proximal-femur-for-cephalomedullary-nailing-an-asian-cadaver-study
#12
Chang-Soo Chon, Bokku Kang, Han Sung Kim, Gu-Hee Jung
PURPOSE: To determine the variability in the ideal entry point of cephalomedullary (CM) nail around the greater trochanter (GT) and the consequent conformity with the proximal femur by analyzing three-dimensional (3D) modeling and virtual implantation MATERIALS AND METHODS: A total of 105 cadaveric femurs (50 males and 55 females) underwent continuous 1.0mm slice computed tomography (CT) scans. CT images imported into Mimics(®) software to reconstruct the 3D model of the proximal femur and medullary canal...
July 11, 2017: Injury
https://www.readbyqxmd.com/read/28712801/the-effect-of-pelvic-tilt-and-femoral-head-size-on-hip-range-of-motion-to-impingement
#13
Thomas F McCarthy, Jim Nevelos, Randa K Elmallah, Morad Chughtai, Anton Khlopas, Vincent Alipit, Timothy C Wagner, Michael A Mont
BACKGROUND: About 50%-70% of dislocators have cups placed within so-called "safe zones." It has been postulated that factors such as femoral head size and pelvic tilt, obliquity, or rotation may influence postoperative stability. Therefore, we assessed varying degrees of pelvic tilt and head sizes on the range of motion (ROM) to impingement. METHODS: A hip simulator was used to import models of 10 subjects who performed object pickup, squatting, and low-chair rising...
November 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28682639/in-vivo-measurements-of-the-ischiofemoral-space-in-recreationally-active-participants-during-dynamic-activities-a-high-speed-dual-fluoroscopy-study
#14
Penny R Atkins, Niccolo M Fiorentino, Stephen K Aoki, Christopher L Peters, Travis G Maak, Andrew E Anderson
BACKGROUND: Ischiofemoral impingement (IFI) is a dynamic process, but its diagnosis is often based on static, supine images. PURPOSE: To couple 3-dimensional (3D) computed tomography (CT) models with dual fluoroscopy (DF) images to quantify in vivo hip motion and the ischiofemoral space (IFS) in asymptomatic participants during weightbearing activities and evaluate the relationship of dynamic measurements with sex, hip kinematics, and the IFS measured from axial magnetic resonance imaging (MRI)...
October 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28673601/femoroacetabular-impingement-causes-osteoarthritis-of-the-hip-by-migration-and-micro-instability-of-the-femoral-head
#15
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/28630736/abnormal-femoral-antetorsion-a-subtrochanteric-deformity
#16
Guy Waisbrod, Florian Schiebel, Martin Beck
Femoral rotational malalignment is associated with pain and functional disability and may be a contributing factor to hip impingement as well as to instability. In general, the deformity can be addressed surgically by rotational osteotomy. However, the anatomic location of the deformity is debated. The goal of the present study was to narrow down the anatomic site of deformity using the lesser trochanter (LT) as an additional landmark. One hundred and eight patients underwent computer tomography (CT)-based rotational analysis of their lower extremities...
July 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28611961/radiographic-outcomes-of-osteosynthesis-using-proximal-femoral-nail-antirotation-pfna-system-in-intertrochanteric-femoral-fracture-has-pfna-ii-solved-all-the-problems
#17
Won Chul Shin, Jung Dong Seo, Sang Min Lee, Nam Hoon Moon, Jung Sub Lee, Kuen Tak Suh
PURPOSE: We evaluated the geometric discrepancies between the proximal femur in Koreans and two types of proximal femoral nail using plain radiographs. MATERIALS AND METHODS: A total of 100 consecutive patients (38 treated with proximal femoral nail antirotation [PFNA], 62 PFNA II) with intertrochanteric fracture were retrospectively identified. The minimum follow up period was 32 months. The geometric analysis of the proximal femur was performed using preoperative true hip antero-posterior radiographs of the unaffected side, and the data were compared with the PFNA and PFNA II dimensions...
June 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/28551834/increased-bone-tracer-uptake-in-symptomatic-patients-with-acl-graft-insufficiency-a-correlation-of-mri-and-spect-ct-findings
#18
Dominic T Mathis, Anna Hirschmann, Anna L Falkowski, Tommi Kiekara, Felix Amsler, Helmut Rasch, Michael T Hirschmann
PURPOSE: Magnetic resonance imaging (MRI) and single-photon emission computerised tomography/computerised tomography (SPECT/CT) are used as diagnostic tools in symptomatic patients after reconstruction of the anterior cruciate ligament (ACL). The benefit of SPECT/CT in comparison with MRI is under debate. The purpose of this study was to investigate whether and how bone tracer uptake (BTU) intensity and distribution in SPECT/CT correlate with MRI findings in symptomatic patients after ACL reconstruction...
May 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28547675/complications-following-proximal-femoral-locking-compression-plating-in-unstable-proximal-femur-fractures-medium-term-follow-up
#19
Sandro Hodel, Frank J P Beeres, Reto Babst, Björn-Christian Link
PURPOSE: To assess the outcome in patients treated with proximal femoral locking compression plate (PF-LCP 4.5/5.0, Synthes(©)) for unstable inter- and subtrochanteric femoral fractures. METHODS: A retrospective analysis of 16 patients with proximal femur fractures (AO: 31A2: n = 5/32.3%; 31-A3: n = 10/62.5%; 32B1: n = 1/6.3%) treated with a PF-LCP at a Level 1 trauma centre between 2011 and 2015 was conducted. RESULTS: Sixteen patients were available for follow-up with a mean follow-up time of 14 months (range 4-29)...
December 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28529662/femoral-and-acetabular-re-alignment-in-slipped-capital-femoral-epiphysis
#20
M Leunig, H M Manner, L Turchetto, R Ganz
NEW PATHOPHYSIOLOGICAL INSIGHTS: Based on improved knowledge of the vascular supply of the proximal femur, a safe surgical dislocation of the hip joint was established allowing direct insights to the pathomorphological malfunctioning of the joint. One insight was that slipped capital femoral epiphysis (SCFE) impingement leads to substantial damage of the chondrolabral rim area, even in the presence of minor slips. A further surgical development was the extended retinacular flap allowing for correction of the deformity with calculable risk for iatrogenic necrosis...
April 2017: Journal of Children's Orthopaedics
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