The splint which has been found most generally useful is the Thomas' knee splint, the ring of which rests against the Ischial tuberosity.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
The lower end of the splint is suspended, and the counter-extension is obtained by pressing the ring against the Ischial tuberosity.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson