1,170 results match your criteria Femoral Neck Stress Fracture

Dipeptidyl Peptidase 3 Activity as a Promising Biomarker of Bone Fragility in Postmenopausal Women.

Molecules 2022 Jun 19;27(12). Epub 2022 Jun 19.

Unit of Metabolic Bone and Thyroid Disorders, Fondazione Policlinico Universitario Campus Bio-Medico, 00128 Rome, Italy.

The dipeptidyl peptidase 3 () is a ubiquitous zinc-dependent aminopeptidase, participating in the activation or degradation of signaling peptides and in the Keap1-Nrf2 antioxidant pathway. The absence of in the knockout mouse model causes increased osteoclast activity, altered osteogenic function, sustained oxidative stress in the bone tissue, and bone loss. We aimed to assess the association of activity with bone fragility in postmenopausal osteoporosis and the impact of denosumab on enzymatic activity. Read More

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Multiple stress fractures of unilateral femur: A case report.

World J Clin Cases 2022 May;10(13):4280-4287

Department of Orthopaedics, Suzhou Kowloon Hospital Shanghai Jiao Tong University School of Medicine, Suzhou 215028, Jiangsu Province, China.

Background: Stress fractures of the femoral neck are not common in clinical practice, and simultaneous stress fractures of the femoral neck and proximal femur of the unilateral femur are even more rare. We introduce a case of this type of fracture that was treated in our department, analyze the causes, and review similar stress fractures reported in the literature to provide references for the diagnosis and treatment of such conditions.

Case Summary: A 62-year-old female, with a free medical history, was admitted to the hospital mainly due to pain in the right hip and worsening pain in the right thigh. Read More

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A case-driven hypothesis for multi-stage crack growth mechanism in fourth-generation ceramic head fracture.

J Orthop Surg Res 2022 Jun 3;17(1):293. Epub 2022 Jun 3.

IRCCS Istituto Ortopedico Rizzoli, Ortopedia-Traumatologia e Chirurgia Protesica e dei Reimpianti d'Anca e Ginocchio, Bologna, Italy.

Background: Ceramic bearings are used in total hip arthroplasty due to their excellent wear behaviour and biocompatibility. The major concern related to their use is material brittleness, which significantly impacts on the risk of fracture of ceramic components. Fracture toughness improvement has contributed to the decrease in fracture rate, at least of the prosthetic head. Read More

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Impact of Femoral Neck Cortical Bone Defect Induced by Core Decompression on Postoperative Stability: A Finite Element Analysis.

Biomed Res Int 2022 20;2022:3667891. Epub 2022 May 20.

Department of Orthopaedics, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China.

Objective: To analyze the impact of femoral neck cortical bone defect induced by core decompression on postoperative biomechanical stability using the finite element method.

Methods: Five finite element models (FEMs) were established, including the standard operating model and four models of cortical bone defects at different portions of the femoral neck (anterior, posterior, superior, and inferior). The maximum stress of the proximal femur was evaluated during normal walking and walking downstairs. Read More

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Biomechanical structure-function relations for human trabecular bone - comparison of calcaneus, femoral neck, greater trochanter, proximal tibia, and vertebra.

Comput Methods Biomech Biomed Engin 2022 May 17:1-9. Epub 2022 May 17.

Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, MD.

MicroCT-based finite element models were used to compute power law relations for uniaxial compressive yield stress versus bone volume fraction for 78 cores of human trabecular bone from five anatomic sites. The leading coefficient of the power law for calcaneus differed from those for most of the other sites ( < 0.05). Read More

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CORR Insights®: Surgically Treated Femoral Neck Stress Fractures Are Likely to Result in Military Separation During Basic Combat Training.

Clin Orthop Relat Res 2022 May 10. Epub 2022 May 10.

Norman M. Rich Professor and Chair, Department of Surgery, Uniformed Services University-Walter Reed, Bethesda, MD, USA.

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Fracture of a titanium femoral neck after revision total hip arthroplasty.

BMJ Case Rep 2022 May 10;15(5). Epub 2022 May 10.

Department of Orthopaedics, ARCUS Kliniken, Pforzheim, Germany.

We report a case of a fractured titanium alloy (Ti6Al4V) femoral stem 2 years after revision (debridement, antibiotics and implant retention due to periprosthetic joint infection) total hip arthroplasty (THA). Material analysis revealed a superficial abnormality on the upper neck surface caused by local melting with electrocautery probably acting as a stress amplifier. This lesion presumably was the trigger of a fatigue fracture with typical features on the fracture surface. Read More

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Restrictive Eating and Prior Low-Energy Fractures Are Associated With History of Multiple Bone Stress Injuries.

Int J Sport Nutr Exerc Metab 2022 May 6:1-9. Epub 2022 May 6.

Massachusetts General Hospital, Boston, MA,USA.

Bone stress injuries (BSIs) are common among athletes and have high rates of recurrence. However, risk factors for multiple or recurrent BSIs remain understudied. Thus, we aimed to explore whether energy availability, menstrual function, measures of bone health, and a modified Female Athlete Triad Cumulative Risk Assessment (CRA) tool are associated with a history of multiple BSIs. Read More

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Varus malalignment of the lower limb increases the risk of femoral neck fracture: A biomechanical study using a finite element method.

Injury 2022 Jun 26;53(6):1805-1814. Epub 2022 Apr 26.

Institut Pprime UPR 3346, CNRS - Université de Poitiers - ISAE-ENSMA, France; Department of Orthopaedic surgery and Traumatology, University Hospital, Martinique, France. Electronic address:

Introduction: The understanding of the stresses and strains and their dependence on loading direction caused by an axial deformity is very important for understanding the mechanism of femural neck fractures. The hypothesis of this study is that lower limb malalignment is correlated with a substantial stress variation on the upper end of the femur. The purpose of this biomechanical trial using the finite element method is to determine the effect of the loading direction on the proximal femur regarding the malalignment of the lower limb, and also enlighten the relation between the lower limb alignment and the risk of a femoral neck fracture. Read More

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Stress fractures of the femoral neck in adults: an observational study on epidemiology, treatment, and reoperations from the Swedish Fracture Register.

Acta Orthop 2022 04 8;93:413-416. Epub 2022 Apr 8.

Department of Surgical and Perioperative Sciences (Orthopedics), Umeå University.

Background And Purpose: Stress fractures of the femoral neck (sFNFs) are uncommon injuries. Studies on sFNFs are rare. We describe the demographics, classification, treatment, reoperation rates, and mortality in a cohort of sFNF patients from the Swedish Fracture Register (SFR). Read More

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Bilateral Neck of Femur Fracture in a Child With Underlying Vitamin D Deficiency: A Case Report on Management and 10-Year Follow-Up.

Cureus 2022 Mar 8;14(3):e22953. Epub 2022 Mar 8.

Orthopaedics, Lady Hardinge Medical College, New Delhi, IND.

Bilateral femoral neck fracture is a rare entity in the pediatric age group. These types of fractures occur mostly due to high-velocity trauma. We report the surgical outcome with approximately 10 years of follow-up in a 10-year-old child presenting with bilateral femoral neck fracture after trivial trauma and underlying nutritional vitamin D deficiency. Read More

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Improvement of Negative Psychological Stress Response in Elderly Patients With Femoral Neck Fracture by Integrated High-Quality Nursing Model of Medical Care.

Front Surg 2022 24;9:859269. Epub 2022 Mar 24.

Orthopaedics Department, The Fourth Hospital of Changsha (Affiliated Changsha Hospital of Hunan Normal University), Changsha, China.

Objective: The objective of this study was to explore the nursing effect and negative psychological stress response of elderly patients with femoral neck fracture by applying the high-quality nursing mode of medical care.

Methods: A total of 130 elderly patients with femoral neck fractures hospitalized in our hospital from January 2020 to June 2021 were randomly divided into the control group and observation group, with 65 patients in each group. The control group adopted the conventional nursing mode, while the observation group adopted the high-quality nursing mode of medical care. Read More

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A finite element analysis study based on valgus impacted femoral neck fracture under diverse stances.

Comput Methods Biomech Biomed Engin 2022 Apr 4;25(5):475-486. Epub 2022 Apr 4.

Department of Orthopedics, Shanghai Sixth Peoples Hospital, Shanghai, China.

The aim of the study was to determine the biomechanical environment of patients who suffer from valgus impacted femoral neck fracture. With the help of computational modeling, both of finite element hip fracture and normal three-dimensional model were reconstructed from a patient with hip fracture. The predicted stress distribution was compared between before and after fracture. Read More

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Surgically Treated Femoral Neck Stress Fractures Are Likely to Result in Military Separation During Basic Combat Training.

Clin Orthop Relat Res 2022 Mar 23. Epub 2022 Mar 23.

Department of Orthopaedic Surgery, Prisma Health Richland Hospital, Columbia, SC, USA.

Background: Femoral neck stress fractures are a common condition affecting military service members, most noticeably during basic combat training. Previous studies have investigated the risk factors for femoral neck stress fracture development in basic trainees and outcomes associated with treatment; however, few studies have focused on operatively treated femoral neck stress fracture in the military trainee. Doing so would be important not only for the military, but also providers caring for athletes, such as distance runners, who have a heightened risk for femoral neck stress fracture development. Read More

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Is there an increased risk for subtrochanteric stress fracture with the Femoral Neck System versus multiple cannulated screws fixation?

J Orthop 2022 Mar-Apr;30:127-133. Epub 2022 Feb 16.

Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, MD, USA.

Purpose: This study sought to compare the risk of subtrochanteric stress-riser fractures and biomechanical stability of the Femoral Neck System (FNS) versus multiple screw fixation (MSF).

Methods: Eight paired cadaveric femurs were randomly assigned to FNS or MSF. Physiologic load mimicking single leg stance at the subtrochanteric region was applied to the constructs. Read More

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February 2022

Femoral Neck Stress Fractures in Athletes and the Military.

J Bone Joint Surg Am 2022 03;104(5):473-482

Department of Orthopaedic Surgery, Dwight D. Eisenhower Army Medical Center, Fort Gordon, Georgia.

: Femoral neck stress fractures (FNSFs) are an infrequent condition in athletic and military populations.

: A high index of suspicion with liberal use of magnetic resonance imaging (MRI) is vital for early recognition and treatment initiation.

: An associated hip effusion on MRI is a risk factor for an evolving stress injury and requires close assessment and consideration for repeat MRI. Read More

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Determinants of fracture type in the proximal femur: Biomechanical study of fresh frozen cadavers and finite element models.

Bone 2022 05 15;158:116352. Epub 2022 Feb 15.

Department of Orthopaedics Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan. Electronic address:

Background: Proximal femur fractures are usually categorized as either a cervical or trochanteric fracture, but the relationship between fracture type and fall direction is not clear. By cadaveric mechanical testing and finite element analysis (FEA), the aims of this research were to verify the factors that define the proximal femur fracture type and to clarify the change in stress distribution based on fall direction.

Methods: From fresh frozen cadavers, we obtained 26 proximal femora including ten pairs of 20 femora. Read More

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Mechanical effects of surgical variations in the femoral neck system on Pauwels type III femoral neck fracture : a finite element analysis.

Bone Joint Res 2022 Feb;11(2):102-111

Department of Mechanical Engineering, Ajou University, Suwon, South Korea.

Aims: In this study, we aimed to explore surgical variations in the Femoral Neck System (FNS) used for stable fixation of Pauwels type III femoral neck fractures.

Methods: Finite element models were established with surgical variations in the distance between the implant tip and subchondral bone, the gap between the plate and lateral femoral cortex, and inferior implant positioning. The models were subjected to physiological load. Read More

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February 2022

Finite element analysis of new headless compression supporting screw for the treatment of unstable femoral neck fracture.

Biomed Mater Eng 2022 Feb 9. Epub 2022 Feb 9.

Department of Trauma and Orthopaedics, Beijing LuHe Hospital Affiliated to Capital Medical University, Beijing, China.

Background: Femoral neck fracture is an unsolved challenge in orthopedics. The complication rate in particular is high. There remains a lack of consensus on the optimal choice of internal fixation for unstable femoral neck fracture. Read More

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February 2022

Impact of COVID-19 on Key Performance Indicators of the National Hip Fracture Database and the Management of Hip Fracture Patients.

Cureus 2021 Dec 21;13(12):e20575. Epub 2021 Dec 21.

Trauma and Orthopaedics, Royal Glamorgan Hospital, Llantrisant, GBR.

Background:  A hospital's performance regarding the management of hip fractures is based on six key performance indicators (KPIs) which are recorded onto the National Hip Fracture Database (NHFD). The aim of this study was to assess the overall impact of coronavirus disease 2019 (COVID-19) on the management and outcomes of hip fracture patients against a similar period in 2019 by utilizing the KPIs.

Method:  Retrospective data collection of hip fracture patients during a six-week (pre-COVID) period in 2019 and a six-week (COVID-19) period in a single orthopedic unit. Read More

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December 2021

Femoral Neck Stress Fractures: An Updated Review.

J Am Acad Orthop Surg 2022 Apr;30(7):302-311

From the Department of Orthopaedic Surgery, Naval Medical Center San Diego (Bernstein, Kelsey, and Deafenbaugh), the Department of Orthopaedic Surgery, Naval Health Clinic Oak Harbor (Cochran), and the Department of Orthopaedic Surgery, Scripps Mercy Hospital (Kuhn), San Diego, CA.

Femoral neck stress fractures represent a relatively rare spectrum of injuries that most commonly affect military recruits and endurance athletes. If unrecognized and if proper treatment is not initiated, this condition carries potentially devastating consequences. Patients will typically present with an insidious onset, atraumatic hip, and groin pain that is relieved with rest. Read More

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Clinical Outcome and Biomechanical Analysis of Dynamic Hip Screw Combined with Derotation Screw in Treating Displaced Femoral Neck Fractures Based on Different Reduction Qualities in Young Patients (≤65 Years of Age).

Biomed Res Int 2022 5;2022:9505667. Epub 2022 Jan 5.

Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, China.

Objective: To examine the clinical results and biomechanical mechanism of the dynamic hip screw (DHS) and derotation screw (DS) in the treatment of displaced femoral neck fractures (FNF) based on different reduction qualities in young patients (≤65 years of age).

Methods: All patients with FNF who received closed reduction and internal fixation with DHS+DS from January 2014 to August 2019 were retrospectively analyzed. Data on demographics, surgery, clinical outcomes, and postoperative complications were collected. Read More

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January 2022

Biomechanical analysis of two medial buttress plate fixation methods to treat Pauwels type III femoral neck fractures.

BMC Musculoskelet Disord 2022 Jan 14;23(1):49. Epub 2022 Jan 14.

Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Road, Nanguan Street, Changchun, 130041, Jilin Province, China.

Background: Femoral neck fractures in young people are usually Pauwels Type III fractures. The common treatment method are multiple parallel cannulated screws or dynamic hip screw sliding compression fixation. Due to the huge shear stress, the rate of complications such as femoral head necrosis and nonunion is still high after treatment. Read More

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January 2022

Intertrochanteric hip stress fracture in a male ultramarathon runner.

BMJ Case Rep 2022 Jan 13;15(1). Epub 2022 Jan 13.

Orthopaedic Surgery, Mayo Clinic, Jacksonville, Florida, USA.

Stress fractures are injuries frequently seen in high-performance athletes, especially runners. In the femur, the most commonly affected locations are the femoral neck, condylar area and proximal shaft. Intertrochanteric fractures are much more common in the elderly population, especially among those with osteoporosis, but they can also be a result of high-energy repetitive mechanisms. Read More

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January 2022

[Femoral neck stress fracture in a young runner - a rare but severe injury].

Sportverletz Sportschaden 2022 03 11;36(1):60-63. Epub 2022 Jan 11.

Berufsgenossenschaftliches Universitätsklinikum Bergmannsheil, Bochum, GERMANY.

A 29-year-old athlete suffered from vague hip pain during the preparation for a marathon competition. During the competition, severe pain forced him to drop out after 29 kilometres. He underwent conventional x-rays immediately, which showed a displaced lateral fracture of the femoral neck. Read More

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The oblique triangle configuration of three parallel screws for femoral neck fracture fixation using computer-aided design modules.

Sci Rep 2022 01 10;12(1):325. Epub 2022 Jan 10.

Department of orthopedics, The fourth medical center, General Hospital of Chinese PLA, Beijing, China.

Closed reduction and internal fixation with three cannulated compression screws is a common method for treating femoral neck fractures in young and middle-aged patients. Protocols including the inverted triangle configuration and dispersion of the screws still needed further supports. The purpose of this study was to explore a novel oblique triangle configuration (OTC) of three screws in fixing femoral neck fractures based on the morphology of the femoral neck isthmus (FNI). Read More

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January 2022

[Stress fracture of the neck of the femur during pregnancy: A rare clinical situation].

Gynecol Obstet Fertil Senol 2022 03 23;50(3):276-279. Epub 2021 Dec 23.

Département de gynécologie-obstétrique et médecine de la reproduction, CHU de Grenoble-Alpes, Quai Yermoloff 38700 La Tronche, France.

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Bilateral stress fracture of the femoral neck in association with simultaneously developing osteonecrosis of the femoral head: a case report.

J Med Case Rep 2021 Dec 22;15(1):607. Epub 2021 Dec 22.

Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.

Background: Femoral neck stress fractures are rare and often recognized as overuse injuries that occur in young athletes or military personnel. A case following osteonecrosis of the femoral head is quite rare; even more uncommon is its occurrence in the bilateral hips. Magnetic resonance imaging has been established as the preferred tool for diagnosing nondisplaced femoral neck stress fracture due to overuse injury. Read More

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December 2021

Triathlete with Multiple Stress Fractures in the Lower Limbs: Case Report and Literature Review.

Rev Bras Ortop (Sao Paulo) 2021 Dec 7;56(6):813-818. Epub 2021 Dec 7.

Departamento de Medicina do Esporte, Esporte Clube Vitória, Salvador, BA, Brasil.

Recurrent stress fractures rarely affect the same athlete. We present the case of a female triathlete who suffered multiple stress fractures in both tibias, the right fibula, and the left femoral neck. Conservative treatment was instituted in all episodes, with rest, reduced training load, and physical therapy rehabilitation. Read More

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December 2021

Response of Bone Metabolism Markers to Ice Swimming in Regular Practitioners.

Front Physiol 2021 26;12:731523. Epub 2021 Nov 26.

Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.

Both exercise and cold exposure cause physiological stress and they often occur in combination. However, the effects of exercise during severe cold on variation in bone metabolism in humans have remained elusive. The aim of this study was to investigate the variations in circulating bone metabolism markers after ice swimming (IS). Read More

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November 2021