The Twister by NextGen is the perfect solution. It's an affordable HDMI adapter that can be twisted or turned to virtually any position.
The Twister's rotator adapter features a center ball-joint design that enables a 360° rotation and 90° bend so any HDMI cable can easily be installed at almost any angle.
The Twister's high performance design provides 100% signal integrity in any position so full HDMI performance is maintained.