Table 4. Comparison of length and width of SAF of the atlas with other studies.

SAF: superior articular facet, NA: not available.

Studies	No. of atlas studied	Place of study	Mean length of the superior articular facet (mm)		Mean width of the superior articular facet (mm)
			Right	Left	Right	Left
Sengul and Kadioglu [10]	40	Turkey	19.9	18.6	9.6	9.8
Gosavi and Vatsalaswamy [12]	100	India	21.24	21.02	10.36	10.47
Gupta et al. [13]	35	India	21.5	21.8	11.8	11.5
Konig et al. [14]	30	Germany	19.1	18.7	11.6	11.2
Kaur et al. [15]	50	India	21.52	21.51	11.21	11.32
Rocha et al. [16]	20	USA	23.9	23.6	NA	NA
Present study	150	India	21.9954	22.0991	10.7897	11.2380