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Compartment pressure measurement was carried out in 46 patients where 49 fractured and 42 normal legs provided the clinical material using needle manometer technique described by Whitesides et al (1975). The average compartment pressure in the non-injured legs was 6.4 mm Hg against 16.8 mm Hg in fractured legs. The patients clinically suspected to have compartment syndrome showed average pressure of 25.1 mm Hg. Two cases had pressures within 30 mm Hg of their diastolic blood pressure, both underwent fasciotomies and subsequently had full recovery. The fractured legs examined between 12 to 24 hours after the fractures showed higher compartmental pressure. The spiral and comminuted fractures produced higher pressure than the oblique and transverse fractures. The displaced fractures also produced higher pressures than the undisplaced fractures. Its measurement could be of immense value in suspected cases of compartment syndrome.