Post-Market Study of the Ellipse PRECICE Intramedullary Limb Lengthening System

A Post-Market Prospective Evaluation of the Performance and Safety of the Ellipse PRECICE Intramedullary Limb Lengthening System

The purpose of this study is to obtain post market performance and safety data of the Ellipse PRECICE Intramedullary Limb Lengthening System for subjects undergoing unilateral limb lengthening.

Subject data will be reviewed at the following visits:

• Preoperative
• Operative
• Every 7 to 14 days through Distraction Phase
• Every 4 to 6 weeks through Consolidation Phase
• 6-Month Post-Consolidation
• 12-Month Post-Consolidation
• 18-Month Post-Consolidation
• 24-Month Post-Consolidation

Inclusion Criteria:

• Leg length discrepancy ≥ 1.5 cm and ≤ 6.5 cm due to short femur or tibia
• Weight ≤ 114 kg if implanted with the 10.7 mm or 12.5 mm diameter nail, or ≤ 57 kg if implanted with the 8.5 mm diameter nail
• Skeletally mature
• Intramedullary canal without offset
• Tibia or femur sufficient to contain the implant
• Availability, willingness, and sufficient cognitive awareness to comply with protocol procedures and schedule
• Must sign informed consent to permit the use of personal health data

Exclusion Criteria:

• Active infection or previous history of deep infection in the involved bone
• Metal allergies or sensitivities to the components of the device
• Distance from the nearest convenient external surface of the treated limb to the intramedullary canal > 38 mm for the 8.5 mm PRECICE nail, > 51 mm for the 10.7 mm PRECICE nail, or > 76 mm for the 12.5 mm PRECICE nail
• Significant range of motion deficit of the adjacent joints
• Patients with a pacemaker, implanted cardiac defibrillator, or any other electronic or magnetic implant
• Patients who require an MRI during implantation
• Non-union
• Impassable or obstructed intramedullary canal
• Significant angular deformity that prevents device placement
• Cannot bear weight on the contralateral limb
• Procedural osteotomy cannot be made in an appropriate location
• Deformities that require multilevel osteotomies or bi-lateral implantation at the time of study index surgery
• Systemic bone disease
• Pregnant or nursing women
• Inadequate vascularity or evidence of vascular disease or peripheral neuropathy
• Malignancies or tumors in the involved bone
• Patient is a drug abuser
• Open wounds or ulcers that could compromise treatment