Table 3. The difference between the center of the heel and the base of the heel spur.

Subject number	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
FL (mm)	249	242	266	237	254	240	252	249	276	237	251	240	240	270	273	234
FW (mm)	98	118	118	106	108	91	100	101	108	96	102	94	100	100	99	90
Shoe size	40	39	42	38	38	38	40	40	43	38	40	38	39	40	42	37
Spur length (mm)	5.0	1.5	9.0	1.2	1.2	4.0	6.0	2.0	2.0	4.0	6.0	8.0	4.0	2.0	3.0	7.0
Distance difference (mm)	−0.6	1.3	5.9	1.6	1.1	−2	−1.2	0.4	0.4	0.6	−1.3	6	−2	1.5	6.9	0.1