Overall rate of device-related obstacle showed 14.3% (5/35), 8.8% (3/34), and 6.5% (3/46) in ISKD, PRECICE1, and PRECICE2 groups, respectively.
In the ISKD group, non-device-related problems, such as transient hypoesthesia, heterotopic ossification, and delayed union, occurred relatively more than the other groups.
Thus far, only ISKD and PRECICE have received FDA approval, and each is activated by different mechanisms.
And the model ISKD is out of production due to its unpredictable rate control.
Difficulties of rate control have been reported to be a major disadvantage of ISKD [5, 7, 9, 25].
An average VAS for pain of 7-8 has been reported for ISKD lengthening , but this study involving the same design reports a lower VAS in PRECICE groups for pain of 3-4 during lengthening motion.
Delayed unions, all seen in tibial lengthening, were more seen in ISKD group than PRECICE group.
Han, "Complications of the Intramedullary Skeletal Kinetic Distractor (ISKD) in distraction osteogenesis," Clinical orthopaedics and related research, vol.
Tretow et al., "How precise is the PRECICE compared to the ISKD in intramedullary limb lengthening?" Acta Orthopaedica, vol.