From Jan 1992 to May 1993, 45 cases (46 femurs) with fractures of distal half of femoral shaft were treated by CAIN and were followed up for an average of 34.5 months.

• 生物力学试验表明，该针有足够的强度承受骨折部位的弯矩和扭矩，并且外加扭矩在侧刃上均匀分布，避免了内锁针的应力集中现象。