Rehabilitation Services. Orthopaedics & Sports Medicine Owensboro (OSMO) is the premier provider of orthopaedic and rehabilitation services in northwest Kentucky. We offer a multi-disciplinary approach to rehab that includes a treatment plan tailored to meet the unique needs of each patient.
Definition of ageâgrade. 1  1 : a group of persons of the same sex and approximately the same age having certain definite duties and privileges in common and constituting a division of a tribe or society. 2  2 : a stage (as boyhood, adolescence, or manhood) through which an age-grade passes.
Maasai - Age-sets. Introduction. The basic Maasai political and social structure is their rigid system of age-sets (or age grades; strictly-speaking, an age-grade is a stage within the age-set). These apply primarily to men; women automatically become members of the age-set of their husbands. Under this system, groups of the same age (give or take five years or so) are initiated into adult life during the same period. The age-set thus formed is a permanent grouping, and lasts throughout the life of its members.