Table 1.

Classification of patients with ileosigmoid knotting.

Class	Patient factors
I	No risk factors (advanced age or co morbidities)
II	No shock or gangrene but presence of risk factors
III	Presence of shock
IV	Gangrene of ileum or sigmoid colon, no shock
V	Shock plus gangrene of either ileum or sigmoid colon
VI	Both ileum and sigmoid colon gangrenous