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Table 4 Semiquantitative evaluation of tendon alterations in men according to the Bonar Scale

From: The role of estrogen and progesterone receptors in the rotator cuff disease: a retrospective cohort study

Variables Grade 0 Grade 1 Grade 2 Grade 3
Tenocytes 1 (11.1%) 2 (22.2%) 5 (55.6%) 1 (11.1%)
Ground substance 3 (33.3%) 4 (44.4%) 2 (22.2%) 0 (0%)
Collagen 0 (0%) 3 (33.3%) 5 (55.6%) 1 (11.1%)
Vascularity 2 (22.2%) 5 (55.6%) 0 (0%) 2 (22.2%)
  1. Data are absolute values and percentages of positively stained cells in men’s samples for the 4 parameters of the Bonar Scale