METHOD FOR DETERMINING CRIBRIFORM LAMINA OF THE ETHMOID BONE HEIGHT (NASAL CAVITY HEIGHT) FOR PERFORMING SURGICAL INTERVENTION ON THE ETHMOIDAL LABYRINTH AND AT THE SUPERIOR LEVEL OF THE NASAL CAVITY Russian patent published in 2002 - IPC

FIELD: medicine. SUBSTANCE: method involves measuring head circumference and the received value is substituted into mathematical formulas: =L/11 -2, where H₁ is the ethmoid bone cribriform lamina height in the anterior division in mm, 11 is the empirical constant coefficient, 2 is the empirical constant value; =L/12-2, where H₂ is ethmoid bone cribriform lamina height in the posterior division in mm, L is the head circumference in mm, 12 is the empirical constant coefficient, 2 is the empirical constant value. EFFECT: high accuracy in providing reference point useable in performing surgical interventions on ethmoidal labyrinth.