Heat rupture is characterised by:

In heat rupture the blood vessels remain intact and they usually pass across or along the long axis of the floor of the affected area. Traits Heat rupture Antemoem incised/lacerated wounds Margins of the ruptured pas Irregular May be irregular or regular with abrasions and swelling Extravasation of blood in and around the margins of ruptures Absent Present Blood vessels Intact and usually passing across the long axis of the floor of the affected area Either crushed or clean cut Bleeding Absent as heat coagulates the blood within the vessels Present Vital reactions Absent Present Ref: Forensic Medicine and Toxicology By R.N. Karmakar page 134.