Colorado MicroDissection Needle versus steel scalpel for scalp incisions: a prospective single-center experience

Achieving effective hemostasis during scalp incision is critical in neurosurgery due to the scalp’s rich vascularity. The Colorado MicroDissection Needle, a precision electrosurgical instrument, may offer improved hemostasis compared with the traditional steel scalpel; however, comparative neurosurgical data remain limited. We conducted a non-randomized cohort study of 124 patients undergoing cranial surgery at a single center over 2.5-year period. Patients were allocated to scalp incision using either the Colorado MicroDissection Needle ( n = 44) or a traditional steel scalpel ( n = 80). The primary outcome was opening blood loss (from skin incision to flap elevation). Secondary outcomes included total intraoperative blood loss, postoperative complications (infection, cerebrospinal fluid leakage), wound healing, and hospital stay. Multivariable regression was performed adjusting for age. Baseline characteristics were comparable between groups. Opening blood loss was lower in the Colorado group (median 40 cc vs. 50 cc), but the unadjusted difference was not statistically significant ( p = 0.077). Age-adjusted analyses consistently favored the Colorado needle; however, statistical significance depended on model specification. The ordinary linear model estimated a reduction of 17.2 cc (β = −17.2 cc, p = 0.039), whereas distribution-sensitive analyses did not consistently reach statistical significance. Total intraoperative blood loss did not differ significantly ( p = 0.770). Complication rates were low and similar between groups (13.6% vs. 16.2%, p = 0.798), with no significant differences in infection, CSF leakage, or wound healing outcomes. Length of hospital stay and timing of suture removal were also comparable. In this non-randomized cohort, the Colorado needle appeared to be a safe alternative to the steel scalpel for scalp incisions in cranial surgery. Although it was associated with lower opening blood loss in some, but not all, adjusted model specifications, no difference was observed in total blood loss or clinical outcomes. Because the effect was modest, statistically sensitive to model specification, and potentially influenced by unmeasured differences in procedural complexity, these findings should be regarded as hypothesis-generating and cannot establish an independent causal benefit of the instrument.