The FITBONE® was developed in partnership with Prof. Baumgart. The product was launched in 1997. Since then, this innovative treatment concept has grown into a global success story. Every year, several hundred intramedullary nails are implanted in humans for bone lengthening.
A patient talks about leg lengthening with the FITBONE® method
In 2008, Martina Kappes had her right leg lengthened by four centimeters using the FITBONE® by WITTENSTEIN intens. Learn about her experience of the operation and the post-op period, and what she thinks about it today.
The FITBONE® System consists of the following components
The FITBONE® System is used for correcting leg length discrepancies. With appropriate preoperative planning, it is possible to make axial and torsional corrections as part of limb lengthening.
The FITBONE® intramedullary lengthening nail can
be used to achieve an extension of 60 mm in the
lower leg (tibia) and 80 mm in the upper leg (femur).
The energy required for the distraction process
is transferred to the receiver implanted beneath
the skin by applying an external controller set.
After the bone has been severed, it is stabilized
by means of the intramedullary lengthening nail.
After a period of rest, the patient can resume treatment
independently at home.
FITBONE® is surgically implanted into the bone.
There is no contact between the implanted intramedullary
lengthening nail and the outer surface of the patient's body.
Each lengthening action takes around 90 seconds. The patient performs it independently at home about three times a day. The distraction rate is determined by the surgeon and is one millimeter per day on average, so 40 millimeters of lengthening takes approximately 40 days. After the distraction phase comes the consolidation phase, during which the newly formed bone hardens.
The operated leg can bear partial weight relatively early on. Near the end of the distraction phase, this process can be gradually increased to full weight-bearing. This allows patients to return to their personal and professional routines earlier.
After complete consolidation of the bone, i.e. after one to one and a half years after implantation, the FITBONE® intramedullary lengthening nail and the receiver must be explanted.
Compensation for leg length discrepancies in the femur and tibia. Custom-made devices may be requested for other indications: lengthening of short residual limbs, bone segment transport for defects after tumor resection, other bone reconstruction.
The FITBONE® for special needs
Custom-made devices are manufactured according to the specific needs of our patient. One example is a lengthening nail that uses segment transport to produce new bone following a bone resection (as a result of an accident or a tumor). Healthy bone tissue is transferred over the defective area and forms new bone.