993 results match your criteria Femoral Neck Stress Fracture


Adult hypophosphatasia with compound heterozygous p.Phe327Leu missense and c.1559delT frameshift mutations in tissue-nonspecific alkaline phosphatase gene: a case report.

J Med Case Rep 2019 Apr 24;13(1):101. Epub 2019 Apr 24.

Department of General Medicine, Gunma University Graduate School of Medicine, 3-39-15 Showa-machi, Maebashi, Gunma, 371-8511, Japan.

Background: Hypophosphatasia is an inherited bone disease characterized by low alkaline phosphatase activity encoded by ALPL. Clinically, hypophosphatasia can be categorized as perinatal, infantile, childhood, and adult forms, as well as odonto-hypophosphatasia, according to the age at first sign or dental manifestations. Adult hypophosphatasia typically presents in middle-aged patients who appear to be in good health in early adulthood and manifests as painful feet caused by recurrent, slow-healing stress fractures of the lower limb. Read More

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https://jmedicalcasereports.biomedcentral.com/articles/10.11
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http://dx.doi.org/10.1186/s13256-019-2045-4DOI Listing
April 2019
1 Read

Breakage of metal hip arthroplasty components: Retrieval and structural analysis.

Biomed Mater Eng 2019 Apr 12. Epub 2019 Apr 12.

Department of General Orthopaedics, Musculoskeletal Oncology and Trauma Surgery, Poznan University of Medical Sciences, Poznan, Poland.

Background: Breakage of joint arthroplasty components are rare, yet during an implant retrieval program we found several cases.

Objective: In this study we examined the components to determine the causes and mechanisms of breakage of these implants.

Methods: From our collection of 849 retrievals we selected 682 cases with metal parts (503 hip, 79 knee arthroplasties) and identified fractured components: seven hip resurfacing implants, five total hip replacement stems, one monopolar femoral head, and one modular revision femoral stem from. Read More

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http://dx.doi.org/10.3233/BME-191053DOI Listing

Finite element analysis of different internal fixation methods for the treatment of Pauwels type III femoral neck fracture.

Biomed Pharmacother 2019 Apr 2;112:108658. Epub 2019 Mar 2.

The First Affiliated Hospital of Guangdong University of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou 510405, China. Electronic address:

Objective: To compare the bifomechanical advantages and disadvantages of different internal fixation methods for the treatment of Pauwels type III femoral neck fractures.

Methods: 4 internal fixations were developed to treat Pauwels type III femoral neck fracture finite element models: a: the "F" shaped cannulated screw model, b: the traditional cannulated screw model, c: the "F" shaped cannulated screw coupled with medial plate model, d: the traditional cannulated screw coupled with medial plate. Under the same conditions, the 4 internal fixations and femur of von Mises stress and displacement distribution were studied. Read More

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http://dx.doi.org/10.1016/j.biopha.2019.108658DOI Listing
April 2019
1 Read

Seizures Causing Simultaneous Bilateral Neck of Femur Fractures.

Case Rep Orthop 2019 27;2019:4570578. Epub 2019 Feb 27.

HOD Orthopaedics Northdale Hospital, Pietermaritzburg, South Africa.

Neck of femur fractures are a ubiquitous injury seen by orthopaedic surgeons. In the elderly, these fractures usually occur after a low energy fall, and are invariably unilateral injuries. Bilateral neck of femur fractures have been reported in patients with metabolic bone disease, after electroconvulsive therapy, and in association with stress fractures. Read More

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http://dx.doi.org/10.1155/2019/4570578DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415288PMC
February 2019
4 Reads

Comparison of three different internal fixation implants in treatment of femoral neck fracture-a finite element analysis.

J Orthop Surg Res 2019 Mar 12;14(1):76. Epub 2019 Mar 12.

Department of Orthopedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853, People's Republic of China.

Background: Current surgical interventions for the femoral neck fracture are using either cannulated screws (CCS) or a single large screw at a fixed angle with a side-plate (i.e., a sliding hip screw, AKA dynamic hip screw, DHS). Read More

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http://dx.doi.org/10.1186/s13018-019-1097-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6419341PMC
March 2019
2 Reads

Femoral stress is prominently associated with fracture risk in children: The Generation R Study.

Bone 2019 May 21;122:150-155. Epub 2019 Feb 21.

Department of Internal Medicine, Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40, 3015 GD, the Netherlands; The Generation R Study, Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40, 3015 GD, the Netherlands; Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Dr Molewaterplein 40, 3015 GD, the Netherlands. Electronic address:

Bone modeling is an important process in the growing skeleton. An inadequate bone modeling in response to mechanical loads would lead some children to develop weaker bones than others. The resulting higher stresses in the bones would render them more susceptible to fracture. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S87563282193005
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http://dx.doi.org/10.1016/j.bone.2019.02.018DOI Listing
May 2019
4 Reads

Return to Duty in Military Members Following Surgical Treatment of Incomplete Femoral Neck Fractures.

J Surg Orthop Adv 2018 ;27(4):312-316

Department of Orthopaedic Surgery, Naval Medical Center San Diego, San Diego, California.

The purpose of this study was to determine whether active duty military members treated surgically for incomplete femoral neck stress fractures (FNSFs) return to duty. A retrospective review of 53 patients was evaluated to determine the rate of return to duty (RTD) related to sex, branch of service, side of fracture, and signs of femoroacetabular impingement (FAI). Signs of FAI were measured and compared to RTD. Read More

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January 2018
1 Read

Mid-term results with a neck-preserving femoral stem for total hip arthroplasty.

Hip Int 2018 Nov;28(2_suppl):28-34

1 Joint Replacement Division, Department of Orthopedic Surgery and Trauma, ASST Niguarda Hospital, Milan, Italy.

Introduction:: This prospective study aims to evaluate the mid-term clinical and radiological performance of a new short, neck-preserving femoral stem in total hip arthroplasty (THA).

Patients And Methods:: 178 consecutive patients (190 hips) underwent THA from November 2008 to July 2016. Mean follow-up is 62. Read More

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http://dx.doi.org/10.1177/1120700018813216DOI Listing
November 2018
2 Reads

Biomechanical Comparison of Three Different Intramedullary Nails for Fixation of Unstable Basicervical Intertrochanteric Fractures of the Proximal Femur: Experimental Studies.

Biomed Res Int 2018 11;2018:7618079. Epub 2018 Dec 11.

Department of Orthopaedic Surgery, Hallym University Sacred Heart Hospital, Hallym University School of Medicine, Anyang, Republic of Korea.

Objectives: This biomechanical study was conducted to compare fixation stability of the proximal fragments and their mechanical characteristics in proximal femur models of unstable basicervical IT fractures fixed by cephalomedullary nailing using 3 different types of the femoral head fixation.

Methods: A total of 36 composite femurs corresponding to osteoporotic human bone were used. These specimens were fixed with Gamma 3 (hip screw type; group 1) in 12, Gamma 3 U-blade (screw-blade hybrid type; group 2) in 12, and proximal femoral nail antirotation-II (helical blade type; group 3) in 12, respectively, and an unstable basicervical IT fracture was created by an engraving machine. Read More

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https://www.hindawi.com/journals/bmri/2018/7618079/
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http://dx.doi.org/10.1155/2018/7618079DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6311316PMC
April 2019
12 Reads

Optimum Configuration of Cannulated Compression Screws for the Fixation of Unstable Femoral Neck Fractures: Finite Element Analysis Evaluation.

Biomed Res Int 2018 9;2018:1271762. Epub 2018 Dec 9.

Department of Orthopaedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing 100853, China.

Objectives: In the present study, we evaluated the mechanical outcome of different configurations of cannulated compression screws for the fixation of Pauwels type III femoral neck fracture and the stress distribution around the holes corresponding to fixation protocol after screws removal.

Methods: The Pauwels type III of femoral neck fracture was created in 3-matic software and the models of cannulated compression screws were constructed using UG-NX software. Five fixation systems were assembled to the fracture models. Read More

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https://www.hindawi.com/journals/bmri/2018/1271762/
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http://dx.doi.org/10.1155/2018/1271762DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304632PMC
April 2019
15 Reads

Common and Uncommon Injuries in Ultra-endurance Sports.

Sports Med Arthrosc Rev 2019 Mar;27(1):25-30

North Carolina Orthopaedic Clinic, Duke University Health System, Durham, NC.

Ultra-endurance sports are associated with prolonged physical exercise both during training and competition. Musculoskeletal injuries are common as a result of the repetitive physical stresses. Stress fractures in the weight-bearing bones should always be suspected when ultra-endurance athletes present with pain over bony structures. Read More

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http://Insights.ovid.com/crossref?an=00132585-201903000-0000
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http://dx.doi.org/10.1097/JSA.0000000000000217DOI Listing
March 2019
16 Reads

Long term survival analysis of cementless Spotorno femoral stem in young patients.

Acta Orthop Traumatol Turc 2019 Jan 21;53(1):19-23. Epub 2018 Dec 21.

İstanbul Training and Research Hospital, Department of Physical Therapy and Rehabilitation, İstanbul, Turkey.

Objective: The aim of this study was to analyze the survivorship and clinical outcome of Cementless Spotorno (CLS) stem in young patients.

Methods: A total of 99 consecutive hip arthroplasties using CLS stem were performed on 84 patients younger than 50 years of age between 1993 and 2001. 63 patients were available for final follow-up (mean age: 39 ± 7. Read More

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http://dx.doi.org/10.1016/j.aott.2018.11.004DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6424650PMC
January 2019
6 Reads

Mechanical stress contributes to osteoarthritis development through the activation of transforming growth factor beta 1 (TGF-β1).

Bone Joint Res 2018 Nov 1;7(11):587-594. Epub 2018 Dec 1.

Department of Orthopedics, Academy of Orthopedics Guangdong Province, Orthopedic Hospital of Guangdong Province, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China.

Objectives: The role of mechanical stress and transforming growth factor beta 1 (TGF-β1) is important in the initiation and progression of osteoarthritis (OA). However, the underlying molecular mechanisms are not clearly known.

Methods: In this study, TGF-β1 from osteoclasts and knee joints were analyzed using a co-cultured cell model and an OA rat model, respectively. Read More

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http://dx.doi.org/10.1302/2046-3758.711.BJR-2018-0057.R1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6269596PMC
November 2018
3 Reads

A multi-factorial analysis of bone morphology and fracture strength of rat femur in response to ovariectomy.

J Orthop Surg Res 2018 Dec 13;13(1):318. Epub 2018 Dec 13.

Division of Bio-Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.

Background: Postmenopausal osteoporosis develops due to a deficiency of estrogen that causes a decrease in bone mass and changes in the macro- and micro-architectural structure of the bone, leading to the loss of mechanical strength and an increased risk of fracture. Although the assessment of bone mineral density (BMD) has been widely used as a gold standard for diagnostic screening of bone fracture risks, it accounts for only a part of the variation in bone fragility; thus, it is necessary to consider other determinants of bone strength. Therefore, we aimed to comprehensively evaluate the architectural changes of the bone that influence bone fracture strength, together with the different sensitivities of cortical and trabecular bone in response to ovariectomy (OVX). Read More

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http://dx.doi.org/10.1186/s13018-018-1018-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6293566PMC
December 2018
2 Reads

Inversion of the acetabular labrum causes increased localized contact pressure on the femoral head: a biomechanical study.

Int Orthop 2018 Dec 11. Epub 2018 Dec 11.

Department of Orthopedic Surgery, Kanazawa Medical University, 1-1 Daigaku, Uchinada-machi, Kahoku-gun, Ishikawa, 920-0293, Japan.

Purpose: Although studies suggest that subchondral insufficiency fracture of the femoral head may cause rapidly progressive osteoarthritis of the hip, the mechanism of that relationship remains unclear. Our biomechanical study aimed to provide more data in this area by quantifying pressure distribution on the femoral head for normal and inverted hips and by determining the effects of labral inversion on pressure distribution across the joint, focusing on types of fracture under load.

Methods: We tested mid-sized fourth-generation composite femurs at 15° of adduction, and applied 1 mm/min of axial compressive force to the femoral heads until failure. Read More

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http://link.springer.com/10.1007/s00264-018-4266-3
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http://dx.doi.org/10.1007/s00264-018-4266-3DOI Listing
December 2018
18 Reads

Femoral neck fractures after internal fixation of trochanteric fractures with implants in situ in adults: A systematic review.

Injury 2018 Dec;49(12):2121-2131

AEPSM, Montevideo, Uruguay.

Introduction: Femoral neck fractures (FNF) after internal fixation of trochanteric fractures (AIFTF) with the implant in situ (WIIS) are uncommon. Publications of FNFAIFTFWIIS are rare. The purpose of this systematic review of the literature is to report on the frequency, risk factors, mechanisms, clinical presentation, diagnostic and therapeutic modalities, outcomes and the eventual prevention of this complication. Read More

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http://dx.doi.org/10.1016/j.injury.2018.11.007DOI Listing
December 2018
4 Reads

Comparative analysis for five fixations of Pauwels-I by the biomechanical finite-element method.

J Invest Surg 2018 Dec 5:1-10. Epub 2018 Dec 5.

a Orthopedics Dept. of 1st Affiliated Hospital , GuangZhou Medical University , GuangDong , China.

Background: Little is known about how biomechanics govern the five fixtures such as DHS, MLS, DHS + LS, LP, and HA are accepted as common therapeutic techniques.

Aims And Objectives: A series of numerical models for a femoral neck fracture of Pauwels-I will be constructed by innovative approach of finite element in order to determine the most optimized option in comparison with biomechanical performance.

Method: Twenty sets of computer tomography scanned femora were imported onto Mimics to extract 3 D models; these specimens were transferred to Geomagic-Studio for a simulative osteotomy and kyrtograph; then, they underwent UG to fit simulative solid models; 5 sorts of fixture were then expressed by Pro-Engineer virtually. Read More

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http://dx.doi.org/10.1080/08941939.2018.1533054DOI Listing
December 2018
5 Reads

Dynamic Stress Fluoroscopy for Evaluation of the Femoral Neck After Intramedullary Nails: Improved Sensitivity for Identifying Occult Fractures.

J Orthop Trauma 2019 Feb;33(2):88-91

University of South Florida, Tampa, FL.

Objectives: To report on the use of dynamic stress fluoroscopy (DSF) for detection of occult fractures of the femoral neck associated with femoral shaft fractures. To compare DSF with a fully static imaging protocol in detecting occult femoral neck fractures.

Design: Multicenter retrospective cohort study. Read More

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http://dx.doi.org/10.1097/BOT.0000000000001343DOI Listing
February 2019
4 Reads

Mechanical simulation study of postoperative displacement of trochanteric fractures using the finite element method.

J Orthop Surg Res 2018 Nov 27;13(1):300. Epub 2018 Nov 27.

Department of Orthopaedic Surgery Restorative Medicine of Neuro-Musculoskeletal System, Fujita Health University, Bantane Hospital, 3-6-10 Otoubashi, Nakagawa-ku, Nagoya, Aichi, 454-8509, Japan.

Background: Femoral trochanteric fractures are common among older adults. In the reduction of trochanteric fractures, acquiring the support of the anterior cortex at the fracture site on lateral view immediately after surgery is important. However, even if the cortical support is acquired, postoperative displacement due to the loss of this support often occurs. Read More

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http://dx.doi.org/10.1186/s13018-018-1011-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6258410PMC
November 2018
3 Reads

Early diagnosis of femoral neck stress fractures may decrease incidence of bilateral progression and surgical interventions: A case report and literature review.

Int J Surg Case Rep 2018 31;53:189-192. Epub 2018 Oct 31.

Department of Orthopedic Surgery, Franciscan St. James Hospital, 20201 South Crawford Avenue, Olympia Fields, IL, 60461, United States.

Introduction: Early intervention in femoral neck stress fractures (FNSFs) can be self- limiting, but they have an insidious presentation. High index of suspicion for an occult fracture is necessary to avoid bilateral progression and/or operative interventions.

Case Presentation: A 83-year-old female, non-athlete, presents with multiple comorbidities and progressive bilateral FNSFs. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S22102612183047
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http://dx.doi.org/10.1016/j.ijscr.2018.10.050DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6226580PMC
October 2018
11 Reads

Finite element analysis of different configurations of fully threaded cannulated screw in the treatment of unstable femoral neck fractures.

J Orthop Surg Res 2018 Oct 29;13(1):272. Epub 2018 Oct 29.

Department of Orthopaedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853, People's Republic of China.

Background: In the present study, we evaluated the mechanical outcome of different configurations formed by fully threaded screws and partially threaded screws in the treatment of unstable femoral neck fracture.

Methods: The Pauwels type III unstable femoral fracture and the models of the fully threaded screw and partially threaded screw were constructed in 3-matic software and UG-NX software respectively. We then assembled the different screw configurations to the fracture model separately to form the fixation models. Read More

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https://josr-online.biomedcentral.com/articles/10.1186/s1301
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http://dx.doi.org/10.1186/s13018-018-0970-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6206921PMC
October 2018
7 Reads
1.580 Impact Factor

Biomechanical assessment of single LISS versus double-plate osteosynthesis in the AO type 33-C2 fractures: A finite element analysis.

Injury 2018 Dec 9;49(12):2142-2146. Epub 2018 Oct 9.

Department of Orthopaedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853, PR China. Electronic address:

Objectives: In the present study, we assessed the biomechanical advantage between the single LISS and double-plate used in AO type 33-C2 fractures with the method of finite element analysis, which will help surgeons choose the optimal therapy to the unstable distal femoral fracture.

Methods: The AO type 33-C2 fractures and the models of LISS plate and medial plate was constructed in 3-matic software and UG-NX software respectively. We then assembled the single plate and the double-plate to the fracture model separately to form the fixation models. Read More

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http://dx.doi.org/10.1016/j.injury.2018.10.011DOI Listing
December 2018
3 Reads
2.140 Impact Factor

Modular femoral neck failure after revision of a total hip arthroplasty: a finite element analysis.

Eur J Orthop Surg Traumatol 2019 Apr 13;29(3):717-723. Epub 2018 Oct 13.

Department for Orthopaedic Surgery, University Medical Center Maribor, Ljubljanska 5, 2000, Maribor, Slovenia.

The authors report on a case of modular femoral neck fracture which appeared 21 months after revision of acetabular component. The revision surgery was performed 8 years after the primary total hip arthroplasty due to aseptic loosening of the acetabular component. During acetabular revision, the primary implanted short (S, - 3. Read More

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http://dx.doi.org/10.1007/s00590-018-2314-8DOI Listing
April 2019
6 Reads

Osteoporosis development and vertebral fractures after abdominal irradiation in patients with gastric cancer.

BMC Cancer 2018 Oct 11;18(1):972. Epub 2018 Oct 11.

Department of Radiation Oncology, Biruni University Medicana International Hospital, Istanbul, Turkey.

Background: Decrease in bone mineral density, osteoporosis development, bone toxicity and resulting insufficiency fractures as late effect of radiotherapy are not well known. Osteoporosis development related to radiotherapy has not been investigated properly and insufficiency fractures are rarely reported for vertebral bones.

Methods: Ninety-seven patients with gastric adenocarcinoma were evaluated for adjuvant treatment after surgery. Read More

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https://bmccancer.biomedcentral.com/articles/10.1186/s12885-
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http://dx.doi.org/10.1186/s12885-018-4899-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6182865PMC
October 2018
16 Reads
3.362 Impact Factor

Biofidelic finite element models for accurately classifying hip fracture in a retrospective clinical study of elderly women from the AGES Reykjavik cohort.

Bone 2019 Mar 19;120:25-37. Epub 2018 Sep 19.

Institute for Biomechanics, ETH Zürich, Zürich, Switzerland; School of Science and Engineering, Reykjavik University, Reykjavik, Iceland. Electronic address:

Clinical retrospective studies have only reported limited improvements in hip fracture classification accuracy using finite element (FE) models compared to conventional areal bone mineral density (aBMD) measurements. A possible explanation is that state-of-the-art quasi-static models do not estimate patient-specific loads. A novel FE modeling technique was developed to improve the biofidelity of simulated impact loading from sideways falling. Read More

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http://dx.doi.org/10.1016/j.bone.2018.09.014DOI Listing
March 2019
9 Reads

Femoral Neck Fractures in Children: A Review.

Authors:
Thomas Palocaren

Indian J Orthop 2018 Sep-Oct;52(5):501-506

Department of Orthopaedics, Christian Medical College, Vellore, Tamil Nadu, India.

Paediatric femoral neck fractures are uncommon injuries and are usually caused by high-energy trauma. Low-energy trauma can result in pathologic neck fractures and stress fractures of the neck, due to repetitive activity. Surgical options can vary based on age, Delbet classification and displacement of the fracture. Read More

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http://dx.doi.org/10.4103/ortho.IJOrtho_404_17DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6142798PMC
September 2018
5 Reads

Strength Analyses of Screws for Femoral Neck Fractures.

J Med Biol Eng 2018 20;38(5):816-834. Epub 2018 Apr 20.

2Trauma Centre, University Hospital Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic.

This article represents a multidisciplinary approach to biomechanics (engineering + medicine) in the field of "collum femoris" fractures. One possible treatment method for femoral neck fractures, especially for young people, is the application of cancellous (i.e. Read More

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http://link.springer.com/10.1007/s40846-018-0378-x
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http://dx.doi.org/10.1007/s40846-018-0378-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6132706PMC
April 2018
5 Reads

Assessing bone quality through mechanical properties in postmenopausal trabecular bone.

Injury 2018 Sep;49 Suppl 2:S3-S10

University of Granada, Faculty of Dentistry, Dental Materials Section, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain.

Background: The inner structure of trabecular bone is a result of structural optimization provided by remodeling processes. Changes in hormonal status related to menopause cause bone tissue loss and micro-architectural deterioration with a consequent susceptibility to fracture. Accumulation of micro-damage in bone, as a function of the rate of production and rate of repair, underlies the development of stress fractures, increasing fragility associated to age and osteoporosis, especially in transmenopausal women. Read More

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http://dx.doi.org/10.1016/j.injury.2018.07.035DOI Listing
September 2018
3 Reads

[Frequency of complications in patients older than 60 years with hip fracture].

Acta Ortop Mex 2018 Mar-Apr;32(2):65-69

Traumatología y Ortopedia. Hospital «Dr. Darío Fernández Fierro», Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado (ISSSTE), Ciudad de México. México.

Introduction: According to figures from INEGI 2009, indicate that one in 12 Mexican women and one in 20 men over 65 will suffer a hip fracture. Is expected to reach 110,055 patients in the year 2050. Femoral neck stress fractures are more common in women and consist of 5 to 10%. Read More

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September 2018
16 Reads

Femoral Neck Stress Fractures: MRI Risk Factors for Progression.

J Bone Joint Surg Am 2018 Sep;100(17):1496-1502

Department of Orthopedics, Naval Medical Center San Diego, San Diego, California.

Background: Femoral neck stress fractures are overuse injuries with devastating consequences if not diagnosed and treated appropriately. The aim of this study was to retrospectively review femoral neck stress fractures using a magnetic resonance imaging (MRI)-based protocol and to identify imaging risk factors that could predict fracture progression requiring surgical intervention.

Methods: We identified all femoral neck stress fractures treated at our institution from 2002 to 2015. Read More

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http://dx.doi.org/10.2106/JBJS.17.01593DOI Listing
September 2018
27 Reads

On the internal reaction forces, energy absorption, and fracture in the hip during simulated sideways fall impact.

PLoS One 2018 16;13(8):e0200952. Epub 2018 Aug 16.

Institute for Biomechanics, ETH Zürich, Zürich, Switzerland.

The majority of hip fractures have been reported to occur as a result of a fall with impact to the greater trochanter of the femur. Recently, we developed a novel cadaveric pendulum-based hip impact model and tested two cadaveric femur-pelvis constructs, embedded in a soft tissue surrogate. The outcome was a femoral neck fracture in a male specimen while a female specimen had no fracture. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0200952PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6095517PMC
January 2019
2 Reads

Geometric and Mechanical Bone Response to a Multidisciplinary Weight Loss Intervention in Adolescents With Obesity: The ADIBOX Study.

J Clin Densitom 2018 Jun 19. Epub 2018 Jun 19.

Université Clermont Auvergne, Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions (AME2P), Clermont-Ferrand, France; Faculty of Health, Australian Catholic University, Melbourne, VIC, Australia; CRNH Auvergne, Clermont-Ferrand, France.

The effectiveness of structured multidisciplinary weight loss (WL) programs combining nutrition and physical activity on bone geometry and strength remains uncertain in adolescents with obesity. The study investigated the impact of a structured WL intervention on bone geometry and strength in adolescents with obesity. Thirty-one adolescents with obesity (mean [standard deviation] 13. Read More

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http://dx.doi.org/10.1016/j.jocd.2018.06.002DOI Listing
June 2018
6 Reads

Stress Fracture of Proximal Femur after Hip Resurfacing Treated with Cannulated Screw.

Joints 2018 Jun 22;6(2):128-130. Epub 2018 Jun 22.

Hip Resurfacing Department, San Raffaele Hospital, Vita e Salute University, Milan, Italy.

Stress fractures of the proximal femur are described in athletes and military personnel. In most cases, they are not treated surgically, except when they are at the top of the femoral neck and with cortical involvement. The return to sports is not recommended in patients with hip replacement, especially for the high rate of revision of implants in the younger patients. Read More

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http://dx.doi.org/10.1055/s-0038-1660815DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6059856PMC
June 2018
9 Reads

Finite element analysis of the impact of screw insertion distal to the trochanter minor on the risk of iatrogenic subtrochanteric fracture.

Proc Inst Mech Eng H 2018 Aug 20;232(8):807-818. Epub 2018 Jul 20.

4 Department of Civil Engineering, Istanbul Aydin University, Istanbul, Turkey.

Iatrogenic subtrochanteric fractures are rarely encountered after cannulated screw fixation of femoral neck fractures; however, when they do occur, there can be several complications. Many orthopedic surgeons have concerns about the potential for iatrogenic subtrochanteric fractures after screw fixation distal to the trochanter minor; therefore, some surgeons are typically reluctant to perform this procedure. This study focused on the risk of an iatrogenic subtrochanteric fracture after treating femoral neck fractures with cannulated screws. Read More

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http://journals.sagepub.com/doi/10.1177/0954411918789963
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http://dx.doi.org/10.1177/0954411918789963DOI Listing
August 2018
11 Reads

[Precise application of Traditional Chinese Medicine in minimally-invasive techniques].

Authors:
Fu-Hui Dong

Zhongguo Gu Shang 2018 06;31(6):493-496

Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing 100102, China;

The miminally-invasive techniques of traditional Chinese medicine(TCM) uses different types of acupuncture needles to treat diseased locations with special techniques. These techniques include different methods of insertion and closed incision (press cutting, sliding cutting, scrape cutting, etc.). Read More

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http://dx.doi.org/10.3969/j.issn.1003-0034.2018.06.001DOI Listing
June 2018
11 Reads

Impact loading history modulates hip fracture load and location: A finite element simulation study of the proximal femur in female athletes.

J Biomech 2018 07 8;76:136-143. Epub 2018 Jun 8.

The UKK Institute for Health Promotion Research, Tampere, Finland. Electronic address:

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. Read More

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http://dx.doi.org/10.1016/j.jbiomech.2018.05.037DOI Listing
July 2018
26 Reads

Arthroscopic Management for Acetabular Rim Stress Fracture and Osteochondritis Dissecans in the Athlete With Hip Dysplasia.

Arthrosc Tech 2018 May 23;7(5):e533-e539. Epub 2018 Apr 23.

Department of Orthopaedic Surgery, the University of Occupational and Environmental Health, Fukuoka, Japan.

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. Read More

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http://dx.doi.org/10.1016/j.eats.2018.01.007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5984351PMC
May 2018
9 Reads

Biomechanical analysis of supra-acetabular insufficiency fracture using finite element analysis.

J Orthop Sci 2018 Sep 14;23(5):825-833. Epub 2018 Jun 14.

Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, 980-8574, Japan.

Background: Supra-acetabular insufficiency fractures (SAIFs) occur in the upper acetabulum and are rare compared with insufficiency sacral, femoral head, or ischial fractures. However, SAIFs are known to occur in low grade trauma, and the underlying mechanism is still remained unclear.

Methods: We performed biomechanical analysis using finite element analysis to clarify the mechanisms underlying the development of SAIFs. Read More

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http://dx.doi.org/10.1016/j.jos.2018.04.005DOI Listing
September 2018
2 Reads

Dynamic finite element analysis of implants for femoral neck fractures simulating walking.

J Orthop Surg (Hong Kong) 2018 May-Aug;26(2):2309499018777899

1 Department of Orthopedics, Konan Hospital, Kobe, Japan.

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. Read More

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http://dx.doi.org/10.1177/2309499018777899DOI Listing
June 2018
3 Reads

Bone microarchitecture, biomechanical properties, and advanced glycation end-products in the proximal femur of adults with type 2 diabetes.

Bone 2018 09 30;114:32-39. Epub 2018 May 30.

Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA; Department of Orthopedic Surgery, Harvard Medical School, Boston, MA 02215, USA. Electronic address:

Skeletal fragility is a major complication of type 2 diabetes mellitus (T2D), but there is a poor understanding of mechanisms underlying T2D skeletal fragility. The increased fracture risk has been suggested to result from deteriorated bone microarchitecture or poor bone quality due to accumulation of advanced glycation end-products (AGEs). We conducted a clinical study to determine whether: 1) bone microarchitecture, AGEs, and bone biomechanical properties are altered in T2D bone, 2) bone AGEs are related to bone biomechanical properties, and 3) serum AGE levels reflect those in bone. Read More

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http://dx.doi.org/10.1016/j.bone.2018.05.030DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6141002PMC
September 2018
33 Reads

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.

Bone 2018 09 25;114:81-89. Epub 2018 May 25.

NIHR Biomedical Research Centre, Institute of Musculoskeletal Sciences, Nuffield Orthopaedic Centre, Oxford OX3 7LD, UK. Electronic address:

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. Read More

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http://dx.doi.org/10.1016/j.bone.2018.05.027DOI Listing
September 2018
5 Reads

Management of Pediatric Femoral Neck Fracture.

J Am Acad Orthop Surg 2018 Jun;26(12):411-419

From the Department of Orthopaedic Surgery, University of California, San Francisco, CA.

In the pediatric population, femoral neck fracture is a relatively uncommon injury with a high complication rate, despite appropriate diagnosis and management. The anatomy and blood supply of the proximal femur in the skeletally immature patient differs from that in the adult patient. Generally, these fractures result from high-energy trauma and are categorized using the Delbet classification system. Read More

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http://dx.doi.org/10.5435/JAAOS-D-16-00362DOI Listing
June 2018
5 Reads

Femoral neck stress fracture in a young female recruit: case report.

SICOT J 2018 18;4:16. Epub 2018 May 18.

Centro Hospitalar do Porto, Hospital de Santo António, Largo Professor Abel Salazar, 4099-001 Porto, Portugal.

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. Read More

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http://dx.doi.org/10.1051/sicotj/2018011DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5958626PMC
May 2018
12 Reads

Effect of pelvis impact angle on stresses at the femoral neck during falls.

J Biomech 2018 06 16;74:41-49. Epub 2018 Apr 16.

Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada.

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. Read More

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http://dx.doi.org/10.1016/j.jbiomech.2018.04.015DOI Listing
June 2018
3 Reads

The influence of osteoporotic bone structures of the pelvic-hip complex on stress distribution under impact load.

Acta Bioeng Biomech 2018 ;20(1):29-38

Department of Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Góra, Zielona Góra, Poland.

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. Read More

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September 2018
4 Reads

Ranking of osteogenic potential of physical exercises in postmenopausal women based on femoral neck strains.

PLoS One 2018 4;13(4):e0195463. Epub 2018 Apr 4.

Human Movement Biomechanics Research Group, Department of Movement Sciences, KU Leuven, Leuven, Belgium.

The current study aimed to assess the potential of different exercises triggering an osteogenic response at the femoral neck in a group of postmenopausal women. The osteogenic potential was determined by ranking the peak hip contact forces (HCFs) and consequent peak tensile and compressive strains at the superior and inferior part of the femoral neck during activities such as (fast) walking, running and resistance training exercises. Results indicate that fast walking (5-6 km/h) running and hopping induced significantly higher strains at the femoral neck than walking at 4 km/h which is considered a baseline exercise for bone preservation. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0195463PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5884624PMC
July 2018
4 Reads

Femoral Neck Stress Fracture in a Female Runner.

J Orthop Sports Phys Ther 2018 Apr;48(4):343

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. Read More

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http://dx.doi.org/10.2519/jospt.2018.7479DOI Listing
April 2018
17 Reads

Total Hip Arthroplasty by the Direct Anterior Approach Using a Neck-preserving Stem: Safety, efficacy and learning curve.

Indian J Orthop 2018 Mar-Apr;52(2):124-132

Department of Research, School of Medicine, University of Notre Dame, Fremantle, New South Wales, Australia.

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. Read More

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http://dx.doi.org/10.4103/ortho.IJOrtho_314_16DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5858205PMC
March 2018
9 Reads

Overuse Injuries Among Female Combat Warriors in the Israeli Defense Forces: A Cross-sectional Study.

Mil Med 2018 11;183(11-12):e610-e616

General Surgeon Headquarters, IDF Medical Forces Headquarters, 1 Aharon Kazir st., Ramat-Gan, Israel.

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. Read More

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http://dx.doi.org/10.1093/milmed/usx238DOI Listing
November 2018
8 Reads