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Figure 6: Drilling of (a) posterior part of the vertebra adjoining the cord should be done by careful (b) left, right, cranial and caudal movements (movements parallel to the cord) with a gentle paint brush technique. (c) Thin posterior part of the bone left after the drilling procedure should be removed with a curette or with a fine Kerrison punch

Figure 6: Drilling of (a) posterior part of the vertebra adjoining the cord should be done by careful (b) left, right, cranial and caudal movements (movements parallel to the cord) with a gentle paint brush technique. (c) Thin posterior part of the bone left after the drilling procedure should be removed with a curette or with a fine Kerrison punch