Arwert, H.

fracture gamma gamma nail group drill femur j bone torsion screw failure centre al 1991 centre drill control university femora cortex department netherland study surgery orthopaedic randomised stress hip screws failure load trochanteric jewett nail-plate drill hole raiser cadaver femora drill holes peritrochanteric fractures hip screw lindsey trochanteric fractures fissure result control group lacroix erasmus university cadaver fixation halder device 995 hole nail orthopaedic orthopaedic leiden arwert part 18 mm surgeon university hospital-dijkzigt fontijne multicentric italian cases 276 table i results screw trial loading torsion instrument injury varty k jewett nail plate delft university drift snijder samples results material aa orthopaedic netherlands trial spiral-type fracture nail trochanteric trolled trial research elkerliek hospital 1994 23 march removal j bone bannister gibson prehole centre incidence drill study stress raiser jewett surgeon rotterdam variables nail size leung gamma nail surg peritrochanteric intertrochanteric