Hall (left) has experience, while van Aanholt impressed at Coventry
Newcastle United have completed loan deals for Queens Park Rangers defender Fitz Hall and Chelsea defender Patrick van Aanholt.
The duo arrive at St James' Park to bolster a depleted defence following injuries to Steven Taylor, Jose Enrique and Danny Simpson.
Centre-half Hall, 29, will remain with Chris Hughton's side until the end of the season.
Dutch left-back van Aanholt, 19, has agreed a one-month deal.
The pair are the third signings to join Newcastle in the space of a week following the arrival of Mike Williamson from Portsmouth on Tuesday, and both players go into the squad for Saturday's trip to Leicester City.
Hall first came to prominence with Oldham Athletic, having been recommended to boss Iain Dowie by his brother Bob who had coached the defender at Chesham United.
His form with the Latics earned him a move to Southampton for £250,000 in July 2003, and he enjoyed a full season with the Saints before he was reunited with Dowie at Crystal Palace for a fee of £1.5m.
Palace proved to be Hall's most successful spell, as the defender won promotion to the Premier League with the Eagles and impressed despite their subsequent relegation.
Spells with Wigan and Queens Park Rangers then followed before the interest of Newcastle brought the London-born player to the Championship leaders on a temporary basis.
During a 10-year career in football, Hall has made more than 200 league appearances, scoring nine goals.
Meanwhile van Aanholt enjoyed a loan spell with Newcastle's Championship rivals Coventry City earlier this season, making 21 appearances, but is yet to make a senior appearance for his parent club following a move from Dutch giants PSV Eindhoven in 2006.
During his time in Chelsea's youth team, the full-back was a member of the 2008 FA Youth Cup final side that lost to Manchester City.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.