Needle Trajectory Calculator

Formulas used:

Lateral: b = a × tan(θ)

Caudad: d = a / (cos(θ) × tan(ϕ))

Estimated LOR: e = a / (cos(θ) × sin(ϕ))

a (lamina + 0.5 cm) θ (degrees from midline) ϕ (degrees from vertical)

Lateral (b): —

Caudad (d): —

Estimated LOR (e): —

Angles are entered in degrees and converted to radians in JavaScript before calculation.