WHILE DRIVING AT APPROXIMATELY 45MPH STEERING WHEEL CAME OFF & FELL INTO THE DRIVER'S LAP. HAD NO CONTROL OF VEHICLE. VEHICLE WENT UP A SMALL EMBANKMENT & THEN HIT A BARBED WIRE FENCE & THEN A DITCH. UPON IMPACT, AIR BAGS DID NOT DEPLOY. DRIVER'S BACK & SHOULDER WERE INJURED. EMERGENCY ROOM TREATMENT AND RELEASED. *AK