One-Year Follow-Up of a Series of 100 Patients Treated for Lumbar Spinal Canal Stenosis by Means of HeliFix Interspinous Process Decompression Device
Figure 2
12 months after procedure laterolateral (a) and anteroposterior (b) radiographs are useful to demonstrate the correct position of this L4-L5 implant.
(a)
(b)
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