A subsurface wound measuring device and method are provided for measuring a subsurface wound or cavity of a patient, the device including a flexible strip having first and second sections, the sections having first and second ends respectively with an intermediate bend being located between the first and second ends. The first end is adapted for being located internally to a patient, the second end being adapted for being located externally to the patient. The first and second sections have generally concave-shaped cross-sections with measuring indicia being located along at least one of the sections. The device also optionally includes a measuring strip and a receiver mounted on the second end for receiving the measuring strip, where the measuring strip and the flexible strip form complementary structure for measuring a subsurface wound or cavity.