Anterior-posterior and rotatoryinstability with and without anterior traction were recorded with roentgen stereophotogrammetric analysis.
2
Healing after 6 months, intermediate fracture fragments, and a decreased Pauwels' angle seemed to imply increased fracture compression or rotatoryinstability.
3
At 20 degree of flexion, none of the braces decreased the internal rotatoryinstability, whereas one type (modified Lenox Hill) reduced the external rotatoryinstability.