French to English Medical Medical (general)

The abbreviations FG and FD appear in the objective examination portion of the evaluation report in which “Visualiser les angles” appears (my previous question). Trapèze, Sterno-CM, Rhomboïde, Omoplate (Supérieur, Médial, Inférieur, Latéral) and Carotide are listed in the left column of a table with the headings of Palpation, Spasme, Douleur and Douleur (yes, two times). The row for Trapèze reads “Négatif, Négatif, Négatif, Négatif, FG, C2, FD”, with each item in a separate column. The next row has four “Négatifs”, followed by “FG, C3, FD”. “FG, C2, FD”, etc. are in the second “Douleur” column. The rows go from C2 down to D1. I assume that G and D are “gauche” and “droit”, but I don’t know what the “F” stands for. The answer is probably obvious. Any input would be appreciated. Thanks.