Determination of Cutting Angle for Patient-Specific Replacement of Knee Joint Based on Mechanical Alignment.

The need for total knee arthroplasty (TKA) has grown significantly in recent years. The cutting angle in TKA plays a major role in the functionality and life expectancy of the knee implant components. This study aims to personalize the femur bone cutting angle selection for implant placement.

Validation of the Patient-Rated Version of the Parkinson Anxiety Scale in Iranian People with Parkinson's Disease.

Objectives: To evaluate the psychometric properties of the Patient-Rated Parkinson's Anxiety Scale (PAS-PR) in people with Parkinson's Disease (PwPD).

Methods: In this cross-sectional study, we assessed Persian-speaking PwPD using the PAS-PR. Psychometric evaluation included: exploratory factor analysis (EFA); internal consistency (Cronbach's α), test - retest reliability (Intraclass Correlation Coefficient); PAS-PR/observer-rated PAS (PAS-OR) agreement (Bland-Altman); and convergent validity against Geriatric Anxiety Inventory (GAI), the Hospital Anxiety and Depression Scale-Anxiety (HADS-A), the Beck Anxiety Inventory (BAI), and the 21-item Depression, Anxiety, and Stress Scale (DASS-21).

Minimal clinically important difference and substantial clinical benefits for single- and dual-task timed up and go test following motor-cognitive training in Parkinson's disease.

Objective: To establish substantial clinical benefits (SCB) and minimal clinically important differences (MCIDs) for both the single-task and dual-task timed up and go (TUG) tests in people with Parkinson's disease (PwPD).

Design: Prospective pre-post intervention study evaluating the effects of combined motor-cognitive training.

Setting: Rehabilitation centers.

Approach to optical encryption: merging ghost imaging with chaos theory.

This paper presents what we believe to be a novel optical encryption algorithm that utilizes ghost imaging based on orthogonal patterns and is combined with chaos theory to improve the security of the encrypted image. The encryption process is carried out in two stages: the first is ghost imaging, while the second utilizes chaos theory. The random sequences generated by chaos theory are integrated with the orthogonal ghost imaging bucket data, effectively protecting the encrypted images from unauthorized access.