Guidance for use
The patient population most likely to benefit from the NanoFx microfracture instrument is the same as that targeted for any microfracture technique. Specifically, for the cartilage repair application, the following factors can impact on final results of the treatment:
Factor
Better Results With
Age
< 40 years
Duration of symptoms
< 12 months
Lesion size
Up to 2 x 2 cm
Lesion depth
< 5 mm
Body mass index
< 30 kg/m2
Preoperative activity level Tegner score
> 4 (better with higher prep activity levels)
Previous surgery
Primary microfracture
Repair cartilage volume
Good defect fill (>66%)
Mechanical alignment
Normal
Joint anatomy
Normal
Joint stability
Ligamentously stable with adequate muscle strength
Meniscus
Normal without loss of meniscal tissue
