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https://www.readbyqxmd.com/read/29154692/landing-kinematics-and-kinetics-at-the-knee-during-different-landing-tasks
#1
Nicholas R Heebner, Deirdre M Rafferty, Meleesa F Wohleber, Andrew J Simonson, Mita Lovalekar, Andrew Reinert, Timothy C Sell
CONTEXT:   Several tasks have been used to examine landing biomechanics for evaluation and rehabilitation, especially as related to anterior cruciate ligament injuries. However, comparing results among studies in which different tasks were used can be difficult, and it is unclear which task may be most appropriate. OBJECTIVE:   To compare lower extremity biomechanics across 5 commonly used landing tasks. DESIGN:   Descriptive laboratory study...
November 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29151007/sagittal-pelvic-orientation-a-comparison-of-two-methods-of-measurement
#2
Aaron Buckland, Edward DelSole, Stephen George, Shaleen Vira, Virginie Lafage, Thomas Errico, Jonathan Vigdorchik
Pelvic tilt is an essential parameter in spinal deformity surgery and in acetabular positioning for total hip arthroplasty. However, the measurement of tilt varies between the hip and spine literature. Hip surgeons measure the anterior pelvic plane tilt, whereas spine surgeons measure the spinopelvic tilt. This study uses stereoradiography (EOS imaging SA, Paris, France) to assess the relationship and the inter-observer and intra-observer reliability of measuring these two common references for pelvic tilt...
December 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/29147761/single-leg-spica-provides-adequate-stability-after-open-reduction-in-developmental-dysplasia-of-the-hip
#3
Nabil Alassaf
INTRODUCTION: The late detection of developmental dysplasia of the hip (DDH) will remain a major concern in some parts of the world until effective screening programs become available. With late diagnosis comes the need for open surgical reduction. Surgery is invariably followed by a period of immobilisation in a spica cast to prevent postoperative displacement. The goal of this study is to evaluate the effect of double-leg spica as compared to single-leg spica, on the risk of displacement after unilateral open reduction of the hip...
November 16, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29145963/functional-results-and-isokinetic-muscle-strength-in-patients-with-fraser-type-i-floating-knee-treated-with-internal-fixation
#4
Fernando Brandao Andrade-Silva, Adriana Carvalho, Caio Mansano, Aline Giese, Marcos de Camargo Leonhardt, Dennis Barbosa, Kodi Edson Kojima, Jorge Santos Silva
INTRODUCTION: According to Fraser's description, ipsilateral femoral and tibial diaphyseal fractures are characterised as type I floating knee and have a better prognosis than fractures with joint involvement (type II). There are few reports of functional and muscle strength in these patients. The objective of this study was to evaluate the functional and isokinetic muscle strength of patients with type I floating knee undergoing femoral and tibial internal fixation. METHODS: Patients with type I floating knee undergoing concomitant femoral and tibial internal fixation were invited for clinical evaluation...
October 2017: Injury
https://www.readbyqxmd.com/read/29145773/forced-use-of-the-paretic-leg-induced-by-a-constraint-force-applied-to-the-nonparetic-leg-in-individuals-poststroke-during-walking
#5
Chao-Jung Hsu, Janis Kim, Elliot J Roth, William Z Rymer, Ming Wu
BACKGROUND: Individuals with stroke usually show reduced muscle activities of the paretic leg and asymmetrical gait pattern during walking. OBJECTIVE: To determine whether applying a resistance force to the nonparetic leg would enhance the muscle activities of the paretic leg and improve the symmetry of spatiotemporal gait parameters in individuals with poststroke hemiparesis. METHODS: Fifteen individuals with chronic poststroke hemiparesis participated in this study...
November 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/29144568/kinematic-analysis-of-pressing-situations-in-female-collegiate-football-games-new-insight-into-acl-injury-causation
#6
Shogo Sasaki, Hideyuki Koga, Tron Krosshaug, Satoshi Kaneko, Toru Fukubayashi
The most common events during which anterior cruciate ligament (ACL) injuries occur in football are pressing situations. This study aimed to describe the knee and hip joint kinematics during pressing situations in football games in order to identify kinematic patterns in actions with a high risk for ACL injuries. We filmed 5 female collegiate football matches and identified 66 pressing situations. Five situations with a large distance between the trunk and foot placements in the sagittal plane were analysed using a model-based image-matching technique...
November 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29140962/anatomic-study-of-innervation-of-the-anterior-hip-capsule-implication-for-image-guided-intervention
#7
Anthony J Short, Jessi Jo G Barnett, Michael Gofeld, Ehtesham Baig, Karen Lam, Anne M R Agur, Philip W H Peng
BACKGROUND AND OBJECTIVES: The purpose of this cadaveric study was to determine the pattern of anterior hip capsule innervation and the associated bony landmarks for image-guided radiofrequency denervation. METHODS: Thirteen hemipelvises were dissected to identify innervation of the anterior hip capsule. The femoral (FN), obturator (ON), and accessory obturator (AON) nerves were traced distally, and branches supplying the anterior capsule documented. The relationships of the branches to bony landmarks potentially visible with ultrasound were identified...
November 14, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29137901/impact-of-femoral-stem-design-on-failure-after-anterior-approach-total-hip-arthroplasty
#8
Krishna R Cidambi, Steven L Barnett, Paige R Mallette, Jay J Patel, Nader A Nassif, Robert S Gorab
BACKGROUND: An increased rate of complications related to femoral component failure has been described with less invasive total hip arthroplasty (THA). This study evaluated the incidence of femoral complications associated with the direct anterior approach for THA. METHODS: Retrospective review was performed of the initial 1120 consecutive patients who underwent direct anterior THA by 2 surgeons. RESULTS: A total of 899 patients (80.3%) had a 2-year follow-up (range, 2-8 years)...
November 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29137900/the-posterior-capsular-ligamentous-complex-contributes-to-hip-joint-stability-in-distraction
#9
Masaki Takao, Yoshito Otake, Norio Fukuda, Yoshinobu Sato, Mehran Armand, Nobuhiko Sugano
BACKGROUND: Laxity of soft tissues after total hip arthroplasty is considered to be a cause of accelerated wear of bearing surfaces and dislocation. The purpose of this study is to assess the contribution of the anterior and posterior capsular ligamentous complexes and the short external rotators, except the quadratus femoris, on the stability of the hip against axial traction. METHODS: The study subjects comprised 7 fresh cadavers with 12 normal hip joints. In 6 hips, soft tissues surrounding the hip joint were resected in the following order to simulate the anterior approach: anterior capsule, posterior capsule, piriformis, conjoined tendon, and external obturator...
November 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29126367/t2-mapping-of-acetabular-cartilage-in-patients-with-femoroacetabular-impingement-at-3-tesla-comparative-analysis-with-arthroscopic-findings
#10
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/29122687/is-anatomic-acetabular-orientation-related-to-pelvic-morphology-ct-analysis-of-150-healthy-pelvises
#11
P Sautet, H Giorgi, P Chabrand, P Tropiano, J-N Argenson, S Parratte, B Blondel
BACKGROUND: Links between sagittal spinal alignment and acetabular orientation attract considerable research attention with the goal of optimising prosthetic cup position. However, whether pelvic incidence (PI) is related to anatomic acetabular orientation remains unknown. We therefore conducted a radiological study with the following objectives: to look for correlations between PI and anatomic acetabular parameters; to describe the sacro-pubic angle (SPA), defined by fixed bony pelvic landmarks, and its relations with acetabular inclination; and to determine whether anatomical parameters (PI and SPA) correlate with demographic characteristics...
November 6, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29115684/bone-material-strength-index-as-measured-by-impact-microindentation-in-postmenopausal-women-with-distal-radius-and-hip-fractures
#12
Tamara D Rozental, Kempland C Walley, Serkalem Demissie, Signe Caksa, Adriana Martinez-Betancourt, Amber M Parker, Joy N Tsai, Elaine W Yu, Mary L Bouxsein
We tested whether cortical bone tissue properties assessed by in vivo impact microindentation would distinguish postmenopausal women with recent distal radius (DRF) or hip fracture (HF) from non-fracture controls (CONT). We enrolled postmenopausal women with recent DRF (n=57), HF (n=41) or CONT (n=93), and used impact microindentation to assess bone material strength index (BMSi) at the anterior surface of the mid-tibia diaphysis. Areal BMD (g/cm(2) ) of the femoral neck (FN), total hip (TH) and lumbar spine (LS) were measured by dual-energy X-ray absorptiometry (DXA)...
November 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29114642/two-stage-treatment-of-a-large-pelvic-cystic-pseudotumor-in-a-metal-on-metal-total-hip-arthroplasty
#13
Umberto Cottino, Federico Dettoni, Salvatore Risitano, Antonio Marmotti, Roberto Rossi
The authors report a case of a huge cystic pseudotumor, surrounding a failed metal-on-metal total hip arthroplasty (THA). The cyst surrounded the hip anteriorly, occupied part of the anterior portion of the thigh, and extended to the anterolateral aspect of the abdomen. The case was treated by a two-stage procedure. The first stage consisted of a percutaneous drainage of the fluid content of the cyst (∼1,200 mL). This procedure reduced the risk of tearing the cyst capsule spreading the liquid in the tissues surrounding the THA, and in the abdomen...
June 2017: Joints
https://www.readbyqxmd.com/read/29112800/the-association-of-femoroacetabular-impingement-and-delayed-gadolinium-enhanced-mri-of-cartilage-dgemric-a-population-based-study
#14
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/29110905/extra-articular-hip-impingement-a-review-of-the-literature
#15
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/29107490/cementless-tapered-wedge-stem-length-affects-the-risk-of-periprosthetic-femoral-fractures-in-direct-anterior-total-hip-arthroplasty
#16
Tatsuya Tamaki, Kurato Jonishi, Yoko Miura, Kazuhiro Oinuma, Hideaki Shiratsuchi
BACKGROUND: Although the popularity of the direct anterior approach for total hip arthroplasty has increased, the femoral procedure in this approach is considered technically challenging, and one of the most frequent complications reported was periprosthetic femoral fractures. The present study aimed to identify factors for predicting the risk of periprosthetic femoral fractures after using stems with a cementless tapered-wedge design through the direct anterior approach. METHODS: We retrospectively assessed the medical records of 686 patients (851 hips) who underwent primary total hip arthroplasty using a single stem with a cementless tapered-wedge design having a short or standard length option...
October 6, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29100184/does-a-not-so-recent-ankle-sprain-influence-interjoint-coordination-during-walking
#17
Philippe Dedieu, Rima Chamoun, Guilhaume Lacaud, Thibault Moulinat, Maxime Queron, Pier-Giorgio Zanone
BACKGROUND: Ankle sprains are common joint injuries in daily and sports activities, whose underlying mechanisms have been amply studied. If joint structures are directly damaged, neuromuscular activity can be affected, particularly in the time domain. This study aims to establish whether previous ankle injury correlates with changes in the inter-joint synergy of the entire lower limb and in the muscle activity pattern during walking. METHODS: Three-dimensional walking-gait analysis was conducted on twenty-four adults...
October 18, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29099887/use-of-intravenous-tranexamic-acid-improves-early-ambulation-after-total-knee-arthroplasty-and-anterior-and-posterior-total-hip-arthroplasty
#18
Eugene S Krauss, MaryAnne Cronin, Sanjeev J Suratwala, Paul Enker, Lisa Rosen, Ayal Segal
We conducted a retrospective cohort study (N = 477) to determine if use of intravenous tranexamic acid (TXA) improves early ambulation and reduces blood loss after total knee arthroplasty and anterior and posterior total hip arthroplasty. Mean (SD) patient age was 66.5 (10.1) years. For all 3 procedures, early ambulation was significantly better in the TXA group than in the no-TXA group at postoperative days 1 and 2, and, over time, reductions in hemoglobin and hematocrit were statistically significantly lower in the TXA group than in the no-TXA group...
September 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29099882/management-and-prevention-of-intraoperative-acetabular-fracture-in-primary-total-hip-arthroplasty
#19
Jonathon M Brown, Kevin S Borchard, Claire E Robbins, Daniel M Ward, Carl T Talmo, James V Bono
Intraoperative acetabular fracture (IAF) is a rare complication of primary total hip arthroplasty (THA). Known risk factors include poor bone stock, underreaming of the acetabular bed, and use of elliptic components. There is a paucity of literature on risk factors, treatment strategies, and outcomes of this potentially devastating complication. We studied the incidence of IAF in primary THA at our high-volume institution. We reviewed 21,519 primary THA cases and identified 16 patients (16 hips) with IAFs. Mean follow-up was 4 years (range, 0-10 years)...
September 2017: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29099512/hip-pain-%C3%A2-difficulty-walking-%C3%A2-tenderness-along-the-anteromedial-thigh-and-groin-%C3%A2-dx
#20
Laura E Fink, Gerald W Morris, Linda A Mansfield
A 14-year-old Caucasian boy presented to our clinic with a complaint of left anterior hip pain. The patient had been running during a flag football match when he suddenly developed a sharp, stabbing pain in his left hip. He said he felt a "pop" in his left groin while his left foot was planted and he was cutting to the right. The patient said this was followed by worsening pain with ambulation and hip flexion. The patient had considerable difficulty walking into the exam room. On physical examination, he had significant tenderness to palpation along the anteromedial thigh and groin...
November 2017: Journal of Family Practice
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