Quantitative computed tomography analysis of proximal femur bone mineral density and its relation to hip fracture risk.

Background: Hip fractures significantly reduce the quality of life and mobility of older adults. This study aimed to analyze the correlation between volumetric bone mineral density (vBMD) in different regions of the proximal femur as measured by quantitative computed tomography (QCT) and various subtypes of hip fractures.

Methods: This case-control study included patients over the age of 65 years admitted to Huadong Hospital Affiliated to Fudan University for hip fractures from November 2022 to December 2023; additionally, patients from the health examination center or outpatient center treated during the same period were included as a control group.

Clinical outcomes of open reduction and internal fixation combined with sartorius muscle iliac bone graft transplantation for displaced femoral neck fractures in middle-aged and young adults: a retrospective analysis of 24 cases.

Objective: This study aimed to evaluate the clinical outcomes and complications of open reduction and internal fixation (ORIF) combined with sartorius muscle iliac bone graft transplantation (SIBFT) in the treatment of displaced femoral neck fractures in middle-aged and young adults.

Methods: A retrospective analysis was performed on 26 patients under the age of 60 with displaced femoral neck fractures (Pauwels III or Garden III-IV) treated at our institution between April 2019 to July 2022. All patients underwent open reduction and internal fixation (ORIF) through the Smith-Petersen (S-P) approach, augmented with a sartorius muscle iliac bone graft transplantation.

Giant cell tumor of proximal femur managed by extended curettage with fibular strut allograft using long intramedullary interlocking nail: A case report and literature review.

Rationale: We first report a unique case of proximal femoral Giant cell tumor of bone, a subtrochanteric lesion associated with femoral neck and intertrochanteric involvement. We chose a completely new surgical approach to treat the primary tumor and preserve the hip joint. No cases of this type have ever been reported.

QCT-based spatio-temporal aging atlas of the proximal femur BMD and cortical geometry.

Aging is associated with an increased risk of fragility fractures at the hip, resulting from a loss of bone mass. While this loss is typically reported as a decreased mean areal bone mineral density (aBMD) in the proximal femur or the femoral neck, its evolution is spatially inhomogeneous, which might also contribute to the increased risk of fractures. Yet, little is known about the evolution of BMD distribution and cortical thickness with age in the proximal femur.

Individuals with Knee Osteoarthritis and Osteoporosis Represent a Distinctive Subgroup Whose Symptoms Originate from Differences in Subchondral Bone Rather than Cartilage.

To explore the hypothesis that knee osteoarthritis patients with osteoporosis represent a sub-cohort with different disease characteristics and origin of symptoms. Men and women in the Osteoarthritis Initiative (OAI) at visit 5 (36 months) were examined for osteoporosis (N = 1483) using DXA (T-score at femoral neck ≤ -2.5), use of bisphosphonates, or having experienced a fracture.

Femoral Extra-articular Deformity in the Context of Prosthetic Knee Surgery and Application of Customized Treatment Using 3D Planning and Printing Techniques.

Introduction: Extra-articular deformity is that located proximal to the femoral epicondyles or distal to the neck of the fibula. In patients with gonarthrosis associated with extra-articular deformity, a different evaluation and approach will be necessary at the time of planning the arthroplasty. 3D planning and printing techniques have had a major impact on pre-operative planning, allowing the production of custom guides at low cost and in an accessible way.

Total Hip Replacement in a Patient with Erdheim-Chester's Disease: A Case Report.

Case: Erdheim-Chester's disease (ECD) is a rare multisystem disorder considered as a neoplasm of non-Langerhans cell histiocytes. We report a case of uncemented total hip arthroplasty in a 74-year-old patient with ECD for femoral neck fracture with pathological involvement of distal metaphysis and diaphysis. We reviewed the literature on bony involvement.

Three-dimensional distribution of subchondral fracture lines in osteonecrosis of the femoral head.

Objective: To investigate the characteristics of three-dimensional distribution of subchondral fracture lines on the surface of the osteonecrosis femoral head, and to discuss the underlying mechanisms that contribute to its collapse.

Methods: We retrospectively analyzed computed tomography (CT) images from 75 patients (comprising a total of 77 femoral heads) diagnosed with Association Research Circulation Osseous (ARCO) stage IIIA or IIIB femoral head necrosis. The three-dimensional structures of both the femoral head and the subchondral fracture line were reconstructed and subsequently fitted into normal femoral head model.

Fat embolism syndrome following femoral shaft fracture: A case report and diagnostic considerations.

Fat embolism syndrome (FES) is a rare but serious complication that can arise after long bone fractures or orthopedic surgeries. This case report presents a 40-year-old male who developed FES following surgical fixation of a femoral shaft fracture using 2 plates. The day after surgery, the patient exhibited tachycardia, respiratory distress, and a fever of 38.

Periprosthetic Fractures of the Femur during the Operation of Primary Total Hip Arthroplasties.

 To determine the incidence of periprosthetic femoral fractures during the operation in primary hip arthroplasties and correlate them with the inherent risk factors associated with patients, implants, and the diagnosis of coxarthrosis and/or femoral neck fractures.  Cross-sectional study, with retrospective analysis of medical records and image exams of patients operated between 2014 and 2019. The variables analyzed followed those proposed by the world literature, namely: age, sex, Dorr index, surgical indication, Vancouver classification, location, type of fixation (cemented or non-cemented), implant model used, intraoperative diagnosis, and corresponding treatment approach.

The ratio between the screw distance and femoral neck width on lateral radiography is a reliable predictor of femoral head necrosis: a clinical review and corresponding numerical simulations.

Background: Fixation instability serves as an initial trigger for femoral head necrosis in patients with femoral neck fractures undergoing internal fixation. The configuration of screw trajectories is critical in determining the stability of the fixation. Our previously published study indicates that abduction of screw trajectories may enhance postoperative angular stability.

[Relationship between cortical fragments and avascular necrosis of femoral head in young adult femoral neck fractures based on CT imaging].

Objective: To explore the effect of femoral neck cortical fragments and surfacial area on avascular necrosis(AVN) after internal fixation of femoral neck fractures based on CT imaging in young adult.

Methods: From January 2011 to January 2021, 218 young and middle-aged patients with femoral neck fractures were reverse triangle fixed with three cannulated lag screws, including 104 males and 114 females;aged 19 to 60 years old with a mean of (48.22±10.