The extent of a focal tendon abnormality was intrasubstance in none (0%) of 16 patients with full-thickness tears, one (20%) of five patients with bursal surface partial-thickness tears, two (20%) of 10 patients with articular surface partial-thickness tears, and two (15%) of 13 patients with tendons without tear.
1 Adequate Intake (AI), where no RDA has been established, but the amount established is somewhat less firmly believed to be adequate for everyone in the demographic group.  Tolerable upper intake levels (UL), to caution against excessive intake of nutrients (like vitamin A) that can be harmful in large amounts.
- set when an RDA cannot be determined due to lack of sufficient data on requirements. - a recommended average daily intake level thought to meet or exceed the needs of virtually all members of a life stage/gender groups based on observed or experimentally determined estimates of nutrient intake by groups of healthy people. - synonymous with RDA.