Introduction: The aim of this prospective study was to evaluate the value of diffusion-weighted magnetic resonance imaging (DW-MRI) in patients with osteonecrosis. Patients were divided into two subgroups as avascular necrosis (AVN) of femoral head for adult group and Legg-Calvé-Perthes (LCP) patients for children.
Patients And Methods: Seventeen patients with femoral head AVN (mean age 42.3 years) and 17 patients with LCP (mean age 8.2 years) were included in this study. Diagnosis confirmed with clinical and other imaging procedures among the patients complaining hip pain. DW images were obtained using the single-shot echo planar sequence and had b values of 0, 500, 1000 s/mm(2). The apparent diffusion coefficient (ADC) values were measured from ADC maps in epiphysis of patients with AVN, both from metaphysis and epiphysis in patients with LCP, respectively. Mann-Whitney U test was used to compare ADC values.
Results: The mean ADC value of femoral heads (1.285 ± 0.204 × 10(-3) mm(2)/s) was increased in patients with AVN when compared to normal bone tissue (0.209 ± 0.214 × 10(-3) mm(2)/s) (p < 0.01). The mean ADC values (×10(-3) mm(2)/s) of both metaphysis (0.852 ± 0.293) and epiphysis (0.843 ± 0.332) were also increased in patients with LCP and differences were statistically significant (p < 0.01).
Conclusions: As a result, osteonecrosis shows increased ADC values. But it is a controversial concept that DWI offers a valuable data to conventional MRI or not. However, as there are report states, there is a correlation between the stage of the disease with ADC values in the LCP disease. DWI is a fast, without-contrast administration technique and provides quantitative values additional to conventional MR techniques; we believe DWI may play an additional assistance to the diagnosis and treatment for LCP patients. Multicentric larger group studies may provide additional data to this issue.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s11547-015-0589-y | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The current study aimed to objectively evaluate the fit of a rectangular, tapered stem to the severely dysplastic hips on the basis of the proximal femoral anatomy and the dimensional properties of the stem. It was hypothesized that the stem size planned with accordance to the diaphyseal canal width alone can accommodate the distal femur successfully with no sizing mismatch. Forty-six patients (53 hips) suffering from secondary osteoarthritis due to hip dysplasia scheduled for total hip arthroplasty (THA) with a subtrochanteric transverse shortening osteotomy were included.
View Article and Find Full Text PDFMorselized Femoral Head Impaction Bone Grafting of Large Defects in Ankle and Hindfoot Fusions.
Foot Ankle Int
January 2025
Royal National Orthopaedic Hospital NHS Trust, Foot & Ankle Unit, Stanmore, United Kingdom.
Background: Ankle and hindfoot fusion in the presence of large bony defects represents a challenging problem. The purpose of this study was to evaluate outcomes of patients who underwent ankle-hindfoot fusions with impaction bone grafting (IBG) with morselized femoral head allograft to fill large bony void defects.
Methods: This was a 3-center, retrospective review of a consecutive series of 49 patients undergoing ankle or hindfoot fusions with femoral head IBG for filling large bony defects.
Association of hip dysplasia in newborns with ethnicity using graf method ultrasound.
Pak J Med Sci
January 2025
Muhammad Ashfaq, MCPS, FCPS, CHPE (JSMU) Pediatric Medicine, National Institute of Child Health Karachi, Pakistan.
Objectives: To determine gender and ethnic distribution of developmental dysplasia of hip in newborns using Graf method for ultrasound. To determine the significance of association between developmental dysplasia of hip with ethnicity in newborns using Graf's method ultrasound.
Method: This analytical cross-sectional observational study was conducted in Karachi from January through June 2022 .
Fetal radiation during acetabular and pelvic ring fixation: Which injury patterns dictate dangerous levels of fluoroscopic cumulative dose.
J Clin Orthop Trauma
March 2025
Department of Orthopaedic Surgery, Mercy St. Vincent Medical Center, 2213 Cherry St., Toledo, OH, 43608, USA.
Background: Gravid females with pelvic fractures are rarely encountered by the orthopaedic trauma surgeon. The initial injury can be detrimental to the pregnant patient, but an unnecessary "second hit" from surgery could also contribute to the outcome of the fetus. Understanding the surgical risks for this unique patient population requires knowledge about the negative effects of anesthesia, surgical exposures, and radiation.
View Article and Find Full Text PDFBioengineering strategies targeting angiogenesis: Innovative solutions for osteonecrosis of the femoral head.
J Tissue Eng
January 2025
Department of Biomedical Engineering, The Chinese University of Hong Kong, Hong Kong SAR, China.
Osteonecrosis of the femoral head (ONFH) is a prevalent orthopedic disorder characterized primarily by compromised blood supply. This vascular deficit results in cell apoptosis, trabecular bone loss, and structural collapse of the femoral head at late stage, significantly impairing joint function. While MRI is a highly effective tool for diagnosing ONFH in its early stages, challenges remain due to the limited availability and high cost of MRI, as well as the absence of routine MRI screening in asymptomatic patients.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!