RFS pins have a unique, patented grooved surface that provides their self-locking and rotational stability benefits.
RFS pins change their dimensions with hydrolysis of the implants, thereby reducing the risk of unstable fixation. Their grooved surface provides channels along the pin and bone interface to allow for vascularization and homogeneous hydrolysis.
The grooved surface provides instant self-locking of the implant. Thus, a 1.5 mm diameter pin has a diameter of 1.4 mm internal to the grooves and a diameter of 1.6 mm external to the grooves. This adaptation of the diameter results in rotational stability of bones affixed by the pin.
Delayed self-locking occurs when pin dimensions change during hydrolysis.
- After 2 weeks of hydrolysis, the pin diameter will increase and the length will decrease by 0.5% to 1% compared to initial pin dimensions. Hydrolysis begins a few hours after pin implantation.
- After 6 weeks of hydrolysis, pin diameter will increase and its length will decrease by 1% to 2% compared to initial pin dimensions.
Indications
RFS pins are indicated for fixation of bone fractures, osteotomies, arthrodesis, bone grafts and osteochondral fractures when accompanied by appropriate immobilization.
Product advantages
- Bioresorbable implant
- Implant delivered sterile in its aseptic package
- No implant removal procedure required
- Self-locking technology, instant and delayed
- Patented unique grooved surface
- Rotational stability of the implant
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