Does grandpa care, too? - Discriminative grandparental investment is associated with phenotypic resemblance and sociodemographic parameters in an Austrian sample.

Typical patterns of discriminative grandparental investment i.e. high investment provided by the maternal grandmother and low investment provided by the paternal grandfather, are mainly interpreted based on the "paternity uncertainty hypothesis".

Role of joint damage, malalignment and inflammation in articular tenderness in rheumatoid arthritis, psoriatic arthritis and osteoarthritis.

Objectives: To determine whether clinical tenderness can be considered a sign of inflammatory joint activity in patients with rheumatoid arthritis (RA), osteoarthritis (OA) or psoriatic arthritis (PsA) and to assess other possible factors associated with tenderness.

Methods: Patients diagnosed with RA, PsA and OA underwent clinical and ultrasound examination of wrists and finger joints. Radiographs of the hands were scored for erosions, joint space narrowing (JSN), osteophytes and malalignment.