keyword
MENU ▼
Read by QxMD icon Read
search

femoral neck stress fracture

keyword
https://www.readbyqxmd.com/read/29921524/impact-loading-history-modulates-hip-fracture-load-and-location-a-finite-element-simulation-study-of-the-proximal-femur-in-female-athletes
#1
Shinya Abe, Nathaniel Narra, Riku Nikander, Jari Hyttinen, Reijo Kouhia, Harri Sievänen
Sideways falls impose high stress on the thin superolateral cortical bone of the femoral neck, the region regarded as a fracture-prone region of the hip. Exercise training is a natural mode of mechanical loading to make bone more robust. Exercise-induced adaptation of cortical bone along the femoral neck has been previously demonstrated. However, it is unknown whether this adaption modulates hip fracture behavior. The purpose of this study was to investigate the influence of specific exercise loading history on fall-induced hip fracture behavior by estimating fracture load and location with proximal femur finite element (FE) models created from magnetic resonance images (MRI) of 111 women with distinct exercise histories: 91 athletes (aged 24...
June 8, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29868431/arthroscopic-management-for-acetabular-rim-stress-fracture-and-osteochondritis-dissecans-in-the-athlete-with-hip-dysplasia
#2
Soshi Uchida, Yuki Shimizu, Yohei Yukizawa, Hitoshi Suzuki, Cecilia Pascual-Garrido, Akinori Sakai
Intra-articular lesions are common in patients with acetabular hip dysplasia. Rim stress fractures (RSFs) have also been described in patients with acetabular hip dysplasia. This lesion is believed to be a result of an unfused secondary ossification center or a stress fracture that could be caused by repetitive impingement of an abnormal-shaped femoral head-neck junction. In addition, osteochondritis dissecans of the acetabulum is a rare condition that can also result from impingement and has been described in patients with hip dysplasia...
May 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29860916/dynamic-finite-element-analysis-of-implants-for-femoral-neck-fractures-simulating-walking
#3
Mitsuaki Noda, Yukiko Nakamura, Kazuhiko Adachi, Yasuhiro Saegusa, Masayasu Takahashi
BACKGROUND: To examine postoperative complications for osteosynthesizing femoral neck fractures (Pauwels III), biomechanical analysis should be conducted under dynamic conditions simulating for walking, not static conditions. Among the two main aims of this study, one is to pioneer the technique of dynamic finite element (FE) analysis, and the other is to compare stress distribution between two implants during walking. MATERIALS AND METHODS: First, we performed an inverse dynamic analysis with optimization method using a musculoskeletal model to calculate the inter-segmental and muscular forces during walking...
May 2018: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29807138/femoral-neck-cortical-bone-in-female-and-male-hip-fracture-cases-differential-contrasts-in-cortical-width-and-sub-periosteal-porosity-in-112-cases-and-controls
#4
Jon Power, Nigel Loveridge, Heikki Kröger, Martyn Parker, Jonathan Reeve
OBJECTIVES: To quantitate differences between cases of hip fracture and controls in cortical width around the mid-femoral neck in men and women. METHODS: Over 5 years, 64 (14 male) participants over age 55 (mean 79) years, who had never taken bone-active drugs and suffered intra-capsular hip fracture treated by arthroplasty, donated their routinely discarded distal intra-capsular femoral neck bone for histomorphometry. After embedding, complete femoral neck cross sections from the cut surface near the narrowest part of the neck were stained with von Kossa and cortical width was measured radially every 5 degrees of arc...
May 25, 2018: Bone
https://www.readbyqxmd.com/read/29774866/femoral-neck-stress-fracture-in-a-young-female-recruit-case-report
#5
Hélder Fonte, Ricardo Rodrigues-Pinto
INTRODUCTION: Femoral neck stress fractures are uncommon and depending on their location, can be at high risk for non-union and significant morbidity.  Their prevalence is higher among runners and military recruits, and women seem to be at higher risk. METHODS: A 27-year-old female, who was enrolled in military recruit, reported left side groin pain after a strenuous running exercise. Due to persistent pain an X-Ray was ordered, which revealed no signs of acute lesions...
2018: SICOT-J
https://www.readbyqxmd.com/read/29691053/effect-of-pelvis-impact-angle-on-stresses-at-the-femoral-neck-during-falls
#6
W J Choi, S N Robinovitch
Improved understanding is required of how the mechanics of the fall affect hip fracture risk. We used a hip impact simulator to determine how peak stresses at the femoral neck were affected by pelvis impact angle, hip abductor muscle force, and use of a wearable hip protector. We simulated falls from standing (2 m/s impact velocity) involving initial hip abductor muscle forces of 700 or 300 N. Trials were acquired for impact to the lateral aspect of the greater trochanter, and impact to the pelvis rotated 5°, 10° and 15° anteriorly (positive) or posteriorly (negative)...
June 6, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29658534/the-influence-of-osteoporotic-bone-structures-of-the-pelvic-hip-complex-on-stress-distribution-under-impact-load
#7
Katarzyna Arkusz, Tomasz Klekiel, Niezgoda Niezgoda, Romuald Będziński
PURPOSE: The aim of this study was to determine the effect of bone mineral density (BMD) on the stress distribution in pelvic-hip complex (PHC) model which included bone structures and soft tissues. Bone mass changes in osteoporosis and osteopenia were considered in this analysis. In addition, the relations between force direction and stress distribution causing PHC fractures were determined. METHODS: This paper presents the development and validation of a detailed 3D finite element model with high anatomical fidelity of the PHC and BMD changes in trabecular and cortical bones, modelled based on CT scans...
2018: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29607767/femoral-neck-stress-fracture-in-a-female-runner
#8
Meghan A Lamothe, James M Elliott, Alison H Chang
A 23-year-old woman was referred to physical therapy by her primary care physician for a 4-week history of right groin pain that had progressively worsened while training for a half-marathon. Before the physical therapy referral, the primary care physician ordered radiography of the right hip, which was unremarkable for fracture. Following examination, the physical therapist suspected osseous or soft tissue abnormality and requested that the primary care physician order magnetic resonance imaging without contrast, which revealed a femoral neck stress fracture...
April 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29576639/total-hip-arthroplasty-by-the-direct-anterior-approach-using-a-neck-preserving-stem-safety-efficacy-and-learning-curve
#9
Aditya Khemka, Omar Mograby, Sarah J Lord, Zelda Doyle, Munjed Al Muderis
Background: The concept of femoral neck preservation in total hip replacement (THR) was introduced in 1993. It is postulated that retaining cortical bone of the femoral neck offers triplanar stability, uniform stress distribution, and accommodates physiological anteversion. However, data on safety, efficacy and learning curve are lacking. Materials and Methods: We prospectively assessed all patients who were operated for a THR with a short neck preserving stem (MiniHip) between 2012 and 2014...
March 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29564374/early-fracture-of-the-modular-neck-of-a-modulus-femoral-stem
#10
Katsufumi Uchiyama, Takeaki Yamamoto, Mitsutoshi Moriya, Kensuke Fukushima, Yojiro Minegishi, Naonobu Takahira, Masashi Takaso
We present the case of a 46-year-old woman who underwent revision surgery approximately 4 years after total hip arthroplasty because of a fracture of the modular neck of a MODULUS femoral stem. The fractured surfaces of the retrieved implant were inspected using optical and scanning electron microscopy. Three-dimensional finite element analysis was also performed to identify the stresses that might have caused the failure. We concluded that active, obese patients who are implanted with a high-offset, small-sized modular component could experience stress-induced fractures of the modular neck, with proper fixation and osseointegration of the distal stem, especially if residual bone or tissue is present on the inner surface of the neck that could contribute to micromovement and decreased proximal fixation...
June 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/29548016/overuse-injuries-among-female-combat-warriors-in-the-israeli-defense-forces-a-cross-sectional-study
#11
Oren Schwartz, Itzik Malka, Cara H Olsen, Israel Dudkiewicz, Tarif Bader
Introduction: Integration of females in combat units poses a unique challenge for army commanders around the world. The purpose of this study is to provide a detailed up-to-date situation report regarding overuse injuries among combat female warriors in the IDF (Israeli Defense Forces) in order to enable evidence-based decision-making, prevention policy, and further research of this highly significant military public health issue. Methods: A cross-sectional descriptive study was conducted including 2,519 females recruited to combat duties during the year of 2013...
March 14, 2018: Military Medicine
https://www.readbyqxmd.com/read/29526781/comparison-of-femoral-strength-and-fracture-risk-index-derived-from-dxa-based-finite-element-analysis-for-stratifying-hip-fracture-risk-a-cross-sectional-study
#12
Shuman Yang, Yunhua Luo, Lang Yang, Enrico Dall'Ara, Richard Eastell, Andrew L Goertzen, Eugene V McCloskey, William D Leslie, Lisa M Lix
BACKGROUND: Dual-energy X-ray absorptiometry (DXA)-based finite element analysis (FEA) has been studied for assessment of hip fracture risk. Femoral strength (FS) is the maximum force that the femur can sustain before its weakest region reaches the yielding limit. Fracture risk index (FRI), which also considers subject-specific impact force, is defined as the ratio of von Mises stress induced by a sideways fall to the bone yield stress over the proximal femur. We compared risk stratification for prior hip fracture using FS and FRI derived from DXA-based FEA...
May 2018: Bone
https://www.readbyqxmd.com/read/29515648/analysis-of-the-impact-of-configuration-of-the-stabilisation-system-for-femoral-diaphyseal-fractures-on-the-state-of-stresses-and-displacements
#13
Jakub J Słowiński, Konrad Kudłacik
Introduction: The treatment of femoral diaphyseal fractures by intramedullary nailing has become a common procedure in orthopaedic surgery. The purpose of this numerical simulation was to present how the changes in configuration of the stabilisation system can affect the stress and displacement state in the bone tissue and implanted device. Material and Methods: The numerical comparison of the stabilisation variants for the type 32-A2 femoral diaphyseal fracture (according to the AO classification) performed by using the Charfix2 (ChM®) anatomical nail locked in a number of chosen ways...
2018: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29509266/effects-of-ulinastatin-on-inflammatory-response-and-cognitive-function-after-hip-arthroplasty-for-the-elderly-patients-with-femoral-neck-fracture
#14
K-W Ren, N Shen, J-L Tang, L-M Nong, Y-Q Gu
OBJECTIVE: To investigate the effects of ulinastatin on inflammatory response and cognitive function after hip arthroplasty for the elderly patients with femoral neck fracture. PATIENTS AND METHODS: A total of 80 patients with femoral neck fracture receiving hip arthroplasty in our hospital from August 2016 to February 2017 were selected and divided into observation group (n=40) and control group (n=40) using a random number table. The control group was treated with hip arthroplasty and symptomatic and supportive treatment after operation, while the observation group was treated with ulinastatin based on the treatment means of control group...
February 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29457411/-effect-of-hip-fracture-at-different-sites-in-elderly-patients-on-prognosis
#15
Cheng Peng, Xiao-Wei Wang, Shao-Guang Li, Zhi Liu, Tian-Sheng Sun, Jian-Zheng Zhang
OBJECTIVE: To determine the effect of site of fracture on the prognosis for patients of elderly hip fracture. METHODS: From January 2012 to December 2014, 667 patients with hip fractures were divided into femoral neck fracture group and intertrochanteric fracture group according to the site of fracture. There were 304 cases of intertrochanteric fracture, including 96 males and 208 females, with an average age of (80.33±7.94) years old. There were 217 cases of femoral neck fracture, including 74 males and 143 females, with an average age of (79...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29336599/femoral-neck-stress-injuries-analysis-of-156-cases-in-a-u-s-military-population-and-proposal-of-a-new-mri-classification-system
#16
Iván R Rohena-Quinquilla, Fabian J Rohena-Quinquilla, William F Scully, J Richard Lee Evanson
OBJECTIVE: The objective of this study is to formulate a new MRI classification system for fatigue-type femoral neck stress injuries (FNSIs) that is based on patient management and return-to-duty (RTD) time. MATERIALS AND METHODS: A retrospective review of 156 consecutive FNSIs in 127 U.S. Army soldiers over a 24-month period was performed. The width of marrow edema for low-grade FNSIs and the measurement of macroscopic fracture as a percentage of femoral neck width for high-grade FNSIs were recorded...
March 2018: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29283748/femoral-neck-stress-in-older-adults-during-stair-ascent-and-descent
#17
Chen Deng, Jason C Gillette, Timothy R Derrick
A detailed understanding of the hip loading environment is needed to help prevent hip fractures, minimize hip pain, rehabilitate hip injuries and design osteogenic exercises for the hip. The purpose of this study was to compare femoral neck stress during stair ascent and descent and to identify the contribution of muscles and reaction forces to the stress environment in mature adult subjects (n=17; age: 50-65 years). Motion analysis and inverse dynamics were combined with musculoskeletal modelling and optimization, then used as input to an elliptical femoral neck cross-section model to estimate femoral neck stress...
December 28, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29277713/clinical-hip-fracture-is-accompanied-by-compression-induced-failure-in-the-superior-cortex-of-the-femoral-neck
#18
Tengteng Tang, Peter A Cripton, Pierre Guy, Heather A McKay, Rizhi Wang
Hip fractures pose a major health problem throughout the world due to their devastating impact. Current theories for why these injuries are so prevalent in the elderly point to an increased propensity to fall and decreases in bone mass with ageing. However, the fracture mechanisms, particularly the stress and strain conditions leading to bone failure at the hip remain unclear. Here, we directly examined the cortical bone from clinical intra-capsular hip fractures at a microscopic level, and found strong evidence of compression induced failure in the superior cortex...
March 2018: Bone
https://www.readbyqxmd.com/read/29244693/bilateral-simultaneous-femoral-neck-stress-fracture-despite-clinical-recovery-from-anorexia-nervosa-a-case-report
#19
Jacques Hernigou, Simon Koulischer, Renaud Maes
CASE: A 38-year-old woman who had returned to sports activity (running) after having clinically recovered from anorexia nervosa presented with a bilateral femoral neck stress fracture that was treated with bilateral hip osteosynthesis. CONCLUSION: Although exercise is usually considered to be beneficial for health, heavy exercise (such as running) after recovery from anorexia nervosa may be associated with an increased risk of fracture.
January 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29223594/femoral-neck-fractures-after-removal-of-hardware-in-healed-trochanteric-fractures
#20
REVIEW
Antonio Barquet, Peter V Giannoudis, Andrés Gelink
INTRODUCTION: Hardware removal in healed trochanteric fractures (TF) in the absence of infection or significant mechanical complications is rarely indicated. However, in patients with persistent pain, prominent material and discomfort in the activities of daily living, the implant is eventually removed. Publications of ipsilateral femoral neck fracture after removal of implants from healed trochanteric fractures (FNFARIHTF) just because of pain or discomfort are rare. The purpose of this systematic review of the literature is to report on the eventual risk factors, the mechanisms, the clinical presentation, and frequency, and to pay special emphasis in their prevention...
December 2017: Injury
keyword
keyword
42411
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"