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https://www.readbyqxmd.com/read/29033157/midterm-survivorship-after-revision-total-hip-arthroplasty-with-a-custom-triflange-acetabular-component
#1
Brian P Gladnick, Keith A Fehring, Susan M Odum, Michael J Christie, David K DeBoer, Thomas K Fehring
BACKGROUND: Custom triflange acetabular components are being increasingly used for the reconstruction of Paprosky type IIIB acetabular defects. However, midterm survivorship data are lacking. METHODS: We queried the prospective registries at 2 high-volume revision centers for patients who had undergone revision total hip arthroplasty using a custom triflange component between 2000 and 2011. We identified 73 patients with minimum 5-year follow-up. These patients' records were reviewed to determine incidence of revision or reoperation, clinical performance, and radiographic stability...
September 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29029356/total-hip-arthroplasty-dislocation-after-cardioversion-a-case-report
#2
Ahmed Siddiqi, Carl T Talmo, James V Bono
New onset postoperative atrial fibrillation (AF) is the most common perioperative arrhythmia in the elderly. The incidence after total joint arthroplasty is much lower than other non-cardiac surgeries. Since postoperative atrial fibrillation can cause increased length of hospital stay, mortality, and healthcare costs, it is critical to focus on prevention and prompt management. New onset atrial fibrillation is treated with rhythm control for patients who demonstrate hemodynamic instability or refractory to rate control measures...
October 12, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28991043/kinetic-compensations-due-to-chronic-ankle-instability-during-landing-and-jumping
#3
Hyunsoo Kim, S Jun Son, Matthew K Seeley, J Ty Hopkins
INTRODUCTION: Skeletal muscles absorb and transfer kinetic energy during landing and jumping, which are common requirements of various forms of physical activity. Chronic ankle instability (CAI) is associated with impaired neuromuscular control and dynamic stability of the lower extremity. Little is known regarding an intra-limb, lower-extremity joint coordination of kinetics during landing and jumping for CAI patients. We investigated the effect of CAI on lower-extremity joint stiffness, and kinetic and energetic patterns across the ground contact phase of landing and jumping...
October 3, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28974376/prior-lumbar-spinal-fusion-is-associated-with-an-increased-risk-of-dislocation-and-revision-in-total-hip-arthroplasty-a-meta-analysis
#4
Vincent V G An, Kevin Phan, Brahman S Sivakumar, Ralph J Mobbs, Warwick J Bruce
BACKGROUND: The biomechanical relationship between the lumbar spine and the hip is well-documented. It follows that fusing the lumbar spine would have implications on the outcomes of total hip arthroplasty (THA). This study aimed to determine the effect of preexisting lumbar spinal fusion surgery on the outcomes of THA by synthesizing the available evidence via systematic review and meta-analysis. METHODS: A systematic review with meta-analysis was performed in accordance to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines...
September 9, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28956180/comparison-of-direct-anterior-lateral-posterior-and-posterior-2-approaches-in-total-hip-arthroplasty-network-meta-analysis
#5
Chinundorn Putananon, Harit Tuchinda, Alisara Arirachakaran, Siwadol Wongsak, Thana Narinsorasak, Jatupon Kongtharvonskul
Total hip arthroplasty (THA) is generally considered to be one of the most successful orthopedic surgical procedures. THA patients continue to experience symptoms, most commonly pain, which prevent their return to full function and activity. Possible causes include failure of fixation, instability and damage to soft tissues, associated with the trauma of the surgical procedure. Choosing the optimal surgical approach can minimize these risks and therefore improve the outcome of THA. Surgical approaches in THA include anterior, lateral [anterolateral (Hardinge) and direct lateral (Watson-Jones)], posterior (posterolateral and posterior) and posterior-2 techniques...
September 27, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28949814/a-longitudinal-assessment-of-standing-balance-in-healthy-adults
#6
Roger W Simmons, Susan S Levy, Nicole K Simmons
Background/Study Context: The study was a longitudinal assessment of age-related changes in standing balance and response strategy usage in healthy adults. METHODS: Balance of 17 individuals with a mean age of 44.5 years was assessed and then reassessed 19.5 years later. Participants stood on computer-controlled dual-force platforms enclosed by a visual surround and completed six tests in which visual and/or somatosensory information was systematically degraded or eliminated. RESULTS: Results for each test and a weighted composite balance score revealed no significant change in postural control over the time period studied...
September 26, 2017: Experimental Aging Research
https://www.readbyqxmd.com/read/28939031/the-current-knowledge-on-spinopelvic-mobility
#7
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/28913398/total-femur-arthroplasty-for-revision-hip-failure-in-osteogenesis-imperfecta-limits-of-biology
#8
Pablo Sanz-Ruiz, Manuel Villanueva-Martinez, Jose Antonio Calvo-Haro, Esther Carbó-Laso, Javier Vaquero-Martín
Osteogenesis imperfecta (OI) is a rare congenital disease characterized by alterations in bone quality, with susceptibility to fractures, instability, deformities, and osteoarthrosis. Prosthetic surgery in these patients is associated with an abnormally high rate of implant failures. On the other hand, abnormal bone fragility adds to the complexity of revision surgery in such individuals-thus representing a genuine challenge for the orthopaedic surgeon. We present a case of femoral reconstruction in a patient with OI and prosthetic loosening after reconstruction secondary to femoral septic pseudoarthrosis...
September 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28912634/posterior-hip-instability-relocation-testing-a-resident-s-case-report
#9
Rich Maas, Scott Wallentine, Dale Gerke, Sam Crager, Jessica Stewart
BACKGROUND: Micro-instability (non-radiographic clinical instability) continues to gain recognition as a problem at the hip. Although most research has been directed to anterior hip instability, posterior hip instability (PHI) has also garnered attention. PHI is under recognized, difficult to identify, and confused with other hip pathologies such as a simple sprain or strain. A novel clinical test is introduced that may have helped identify PHI in this patient. Additionally, a conservative rehabilitation approach emphasizing stabilization exercises is described...
September 2017: Journal of Manual & Manipulative Therapy
https://www.readbyqxmd.com/read/28900737/the-benefit-of-the-systematic-revision-of-the-acetabular-implant-in-favor-of-a-dual-mobility-articulation-during-the-treatment-of-periprosthetic-fractures-of-the-femur-a-49-cases-prospective-comparative-study
#10
A Perrin, M Saab, S Putman, K Benad, E Drumez, C Chantelot
INTRODUCTION: The SOFCOT symposium (2005) on periprosthetic fractures of the femur (PFFs) highlighted a high rate of dislocation (15.6% at 6 months) after change of prosthesis. So far, no study has ever proved the benefit of dual-mobility articulation during PFFs revisions. We conducted a comparative study on two prospective cohorts in order to (1) assess the influence of systematic acetabular revision in favor of a double mobility on dislocation rate (2) and in order to evaluate the rate of morbidity associated with this extra surgical procedure...
September 12, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28888787/radiographic-cup-anteversion-measurement-corrected-from-pelvic-tilt
#11
Liao Wang, Andrew R Thoreson, Robert T Trousdale, Bernard F Morrey, Kerong Dai, Kai-Nan An
The purpose of this study was to develop a novel technique to improve the accuracy of radiographic cup anteversion measurement by correcting the influence of pelvic tilt. Ninety virtual total hip arthroplasties were simulated from computed tomography data of 6 patients with 15 predetermined cup orientations. For each simulated implantation, anteroposterior (AP) virtual pelvic radiographs were generated for 11 predetermined pelvic tilts. A linear regression model was created to capture the relationship between radiographic cup anteversion angle error measured on AP pelvic radiographs and pelvic tilt...
September 6, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28878457/effects-of-chronic-ankle-instability-and-induced-mediolateral-muscular-fatigue-of-the-ankle-on-competitive-taekwondo-athletes
#12
Myeounggon Lee, Changhong Youm, Minji Son, Jinhee Kim, Youkyung Kim
[Purpose] The purpose of this study was to investigate the effects of chronic ankle instability and induced mediolateral muscular fatigue of the ankle on competitive Taekwondo athletes during single-leg drop landing. [Subjects and Methods] Fourteen competitive taekwondo athletes with chronic ankle instability and 14 healthy adults participated, and they performed three single-leg drop landings from a 40-cm height before and after induced fatigue. Ankle angular position, peak vertical ground reaction force, loading rate, eccentric work, and contribution were calculated and analyzed...
August 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28869185/gait-variability-and-motor-control-in-patients-with-knee-osteoarthritis-as-measured-by-the-uncontrolled-manifold-technique
#13
Gwenllian Fflur Tawy, Philip Rowe, Leela Biant
Knee osteoarthritis (OA) causes pain, reduced muscular strength and stiffness of the affected joint. In response, the motor control mechanism is altered, potentially compromising stability during acts of daily living. Reduced walking stability can be quantified in terms of gait variability. This study therefore aimed to identify and quantify the effects of knee arthritis on gait variability. Fifty adults (25 males/25 females) with end-stage OA of the knee sufficiently symptomatic to require joint replacement, walked on a self-paced treadmill for 2min...
August 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28866345/should-the-capsule-be-repaired-or-plicated-after-hip-arthroscopy-for-labral-tears-associated-with-femoroacetabular-impingement-or-instability-a%C3%A2-systematic-review
#14
REVIEW
Victor Ortiz-Declet, Brian Mu, Austin W Chen, Jody Litrenta, Itay Perets, Leslie C Yuen, Benjamin G Domb
PURPOSE: To critically evaluate the existing literature on hip capsule biomechanics, clinical evidence of instability, and outcomes of capsular management to answer the following question: Should the capsule be repaired or plicated after hip arthroscopy for labral tears associated with femoroacetabular impingement or instability? METHODS: We used PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-analyses) guidelines to find articles using PubMed and Embase...
August 30, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28852351/rapid-prototyping-3d-model-in-treatment-of-pediatric-hip-dysplasia-a-case-report
#15
Andrew M Holt, Zbigniew Starosolski, J Herman Kan, Scott B Rosenfeld
BACKGROUND: Rapid prototyping is an emerging technology that integrates common medical imaging with specialized production mechanisms to create detailed anatomic replicas. 3D-printed models of musculoskeletal anatomy have already proven useful in orthopedics and their applications continue to expand. CASE DESCRIPTION: We present the case of a 10 year-old female with Down syndrome and left acetabular dysplasia and chronic hip instability who underwent periacetabular osteotomy...
2017: Iowa Orthopaedic Journal
https://www.readbyqxmd.com/read/28843163/electromiography-comparison-of-distal-and-proximal-lower-limb-muscle-activity-patterns-during-external-perturbation-in-subjects-with-and-without-functional-ankle-instability
#16
Khadijeh Kazemi, Amir Massoud Arab, Iraj Abdollahi, Daniel López-López, César Calvo-Lobo
Ankle sprain is one of the most common injuries among athletes and the general population. Most ankle injuries commonly affect the lateral ligament complex. Changes in postural sway and hip abductor muscle strength may be generated after inversion ankle sprain. Therefore, the consequences of ankle injury may affect proximal structures of the lower limb. The aim is to describe and compare the activity patterns of distal and proximal lower limb muscles following external perturbation in individuals with and without functional ankle instability...
August 23, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28831651/treatment-of-stable-slipped-capital-femoral-epiphysis-systematic-review-and-exploratory-patient-level-analysis
#17
H Naseem, S Chatterji, K Tsang, M Hakimi, A Chytas, S Alshryda
BACKGROUND: Several aspects of slipped capital femoral epiphysis (SCFE) treatment remain controversial. Loder's work has been instrumental in changing our understanding and approach to the management of the condition when he introduced the concept of "slip instability" and showed that avascular necrosis (AVN) developed in 47% of unstable slips but none of the stable slips. As the two types of SCFE behave differently in terms of presentation, progress and complications, we approached them as two different conditions to highlight these differences...
August 22, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28827057/ilizarov-hip-reconstruction-osteotomy-a-review
#18
Masood Umer, Talal Aqueel Quadri, Rizwan Haroon Rashid
Hip joint instability can be secondary to congenital hip pathologies like developmental dysplasia (DDH) or acquired such as sequel of infective or neoplastic process. An unstable hip is usually associated with loss of bone from the proximal femur, shortening, abnormal gait, and pain. Many authors have suggested proximal femoral valgus osteotomy for the treatment of unstable hip joints. Ilizarov modified this technique and performed a double-level osteotomy. In addition to proximal femoral valgus extension osteotomy, he introduced a distal femoral varus osteotomy which would lead to limb lengthening and correction of mechanical axis of the leg...
August 18, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28808626/acetabular-revisions-using-porous-tantalum-components-a-retrospective-study-with-5-10-years-follow-up
#19
Francesco Roberto Evola, Luciano Costarella, Giuseppe Evola, Martina Barchitta, Antonella Agodi, Giuseppe Sessa
AIM: To evaluate the clinical and X-ray results of acetabular components and tantalum augments in prosthetic hip revisions. METHODS: Fifty-eight hip prostheses with primary failure of the acetabular component were reviewed with tantalum implants. The clinical records and X-rays of these cases were retrospectively reviewed. Bone defect evaluations were based on preoperative CT scans and classified according to Paprosky criteria of Radiolucent lines and periprosthetic gaps; implant mobilization and osteolysis were evaluated by X-ray...
July 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28781018/high-early-major-complication-rate-after-revision-for-mechanically-assisted-crevice-corrosion-in-metal-on-polyethylene-total-hip-arthroplasty
#20
Brian J McGrory, Anna H Jorgensen
BACKGROUND: Failed total hip arthroplasty caused by mechanically assisted crevice corrosion (MACC) has serious consequences such as adverse local tissue reaction. Revision is currently indicated for significant hip pain, stiffness, and dysfunction; hip instability; progressive bone loss; and soft tissue destruction. Outcomes of this revision surgery are not yet completely understood. METHODS: We examined the surgical outcomes at a minimum of 6 months (average, 25; range, 7-68 months) in a cohort of 27 consecutive patients who underwent revision total hip arthroplasty for MACC associated with a single implant vendor and taper type...
July 14, 2017: Journal of Arthroplasty
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