Tom S, Frayne M, Manske SL, Burghardt AJ, Stok KS, Boyd SK, Barnabe C. Determining metacarpophalangeal flexion angle tolerance for reliable volumetric joint space measurements by high-resolution peripheral quantitative computed tomography. J Rheumatol 2016;43:1941–4. The first statement in paragraph 2 of the Results section of the text has been revised as follows: “Variability in joint space width and volume measurements (Table 1): Root mean square coefficient of variation values for mean and maximum joint space and joint space volume were < 5% when repositioned under 20 degrees of flexion.” An error in a denominator in the output spreadsheet altered some of the values given in Table 1, which should read as shown below. The findings overall are unaffected.