Assessment of implant position after total knee arthroplasty by dual-energy computed tomography.

Background: Correct alignment of prosthetic components is the most important factor for the success of total knee arthroplasty (TKA). Dual-energy computed tomography (DECT) may be a reliable method in determining implant position after TKA.

Purpose: To evaluate the accuracy and reproducibility of DECT in determining implant position after TKA.

Implant positioning in TKA: comparison between conventional and patient-specific instrumentation.

The number of total knee arthroplasty (TKA) procedures continuously increases, with good to excellent results. In the last few years, new surgical techniques have been developed to improve prosthesis positioning. In this context, patient-specific instrumentation is included.

Role of the Apparent Diffusion Coefficient in the Prediction of Response to Neoadjuvant Chemotherapy in Patients With Locally Advanced Breast Cancer.

Background: We evaluated the diagnostic performance of the baseline diffusion weighted imaging (DWI) and the apparent diffusion coefficient (ADC) in the prediction of a complete pathologic response (pCR) to neoadjuvant chemotherapy (NAC) in patients with breast cancer stratified according to the tumor phenotype.

Patients And Methods: We retrospectively studied 225 patients with stage II, III, and IV breast cancer who had undergone contrast-enhanced magnetic resonance imaging (MRI) and DWI before and after NAC, followed by breast surgery.

Results: The tumor phenotypes were luminal (n = 143; 63.

Anatomy of anteromedial thigh perforators: CT-angiography study.

The anatomy of perforator for anteromedial thigh (AMT) flap is a very much-debated issue. In this article, we report AMT perforator vascular anatomy by CT-Angiography (CTA) evaluation of 68 consecutive healthy thighs. Perforators emergence, caliber, length, course, and source vessel in the central three fifth of the thigh were studied by a virtual coordinate system.