.3 - .7 inch perpendicularly

Not advisable to twist or lift and thrust the needle vigorously

on withdrawal firmly press with a cotton ball for about a minute to prevent a hematoma

.5 - .7 inch obliquely

perpendicular or deep needling could puncture the lung

.5 - .7 inch obliquely 

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .7 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .7 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .7 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .7 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .7 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .7 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .8 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .7 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - .8 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.5 - 1 inch perpendicularly

perpendicular or deep oblique needling outward from the spine could puncture the kidney

1 - 1.2 inch perpendicularly

perpendicular or deep oblique needling outward from the spine could puncture the kidney

.5 - 1 inch perpendicularly or prick the popliteal vein with three edged needle to cause bleeding

avoid puncture of the tibial nerve, popliteal artery, and popliteal vein

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely downward

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - .5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the lung

.3 - 5 inch obliquely

perpendicular or deep oblique needling outward from the spine could puncture the kidney

.5 - 1 inch perpendicularly

.5 - 1 inch perpendicularly

contraindicated in pregnant women