Preoperative calculation of angles of vision and working area in laparoscopic surgery to treat a giant hiatal hernia

Table 3 Working angles with laparoscopic instruments

	D (cm)
X (cm)	2	3	4	5	6	7	8	9	10
10	5.71	8.53	11.31	14.04	16.70	19.29	21.80	24.23	26.57
11	5.19	7.77	10.30	12.80	15.26	17.65	19.98	22.25	24.44
12	4.76	7.13	9.46	11.77	14.04	16.26	18.43	20.56	22.62
13	4.40	6.58	8.75	10.89	12.99	15.07	17.10	19.09	21.04
14	4.09	6.12	8.13	10.12	12.09	14.04	15.95	17.82	19.65
15	3.81	5.71	7.59	9.46	11.31	13.13	14.93	16.70	18.43
16	3.58	5.36	7.13	8.88	10.62	12.34	14.04	15.71	17.35
17	3.37	5.04	6.71	8.37	10.01	11.63	13.24	14.83	16.39
18	3.18	4.76	6.34	7.91	9.46	11.00	12.53	14.04	15.52
19	3.01	4.51	6.01	7.50	8.97	10.44	11.89	13.32	14.74
20	2.86	4.29	5.71	7.13	8.53	9.93	11.31	12.68	14.04
21	2.73	4.09	5.44	6.79	8.13	9.46	10.78	12.09	13.39
22	2.60	3.90	5.19	6.48	7.77	9.04	10.30	11.56	12.80
23	2.49	3.73	4.97	6.20	7.43	8.65	9.87	11.07	12.26
24	2.39	3.58	4.76	5.95	7.13	8.30	9.46	10.62	11.77
25	2.29	3.43	4.57	5.71	6.84	7.97	9.09	10.20	11.31