Rolimeter™ 50A Operator’s Manual for measuring anterior/posterior knee laxity
1 Rolimeter ™ 50A Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Design Philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Rolimeter Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Application . . . . . . . . . . . . . . . . . . .
2 Rolimeter ™ 50A Introduction The Aircast Rolimeter is designed for measuring anterior and posterior knee joint laxity during Lachman, anterior drawer, and “step off” tests. The device is constructed of stainless steel and can be sterilized if desired. Its simplicity of design, ease of use, and pricing make the Rolimeter an ideal cost-effective alternative.
3 Rolimeter ™ 50A Rolimeter Features Calibrated stylus with 2 mm marks White Indicator Adjustment knob Positioner Stylus foot Patellar end Center on tuberosity Center on patella
4 Rolimeter ™ 50A Application ➊ Prepare Rolimeter Open tibia strap. ➋ Apply Rolimeter Place pillow under patient’s thigh to achieve 25° of flexion. Make sure that the patient’s muscles are relaxed. Position the Rolimeter on the injured lower leg aligning patella end on mid patella and wrapping the strap around the tibia. Loosen adjustment knob and slide stylus so that stylus foot rests against the center of the tibia tuberosity. Tighten adjustment knob to secure stylus position.
5 Rolimeter ™ 50A Operation The Rolimeter is designed for measuring anterior and posterior knee joint laxity during Lachman, anterior drawer, and “step off” tests. Lachman Test Apply the Rolimeter to injured leg. Place pillow or examiner’s knee under patient’s thigh to achieve 25° of flexion. Make sure that the patient’s muscles are relaxed. Precondition the knee by applying posterior translation force to the tibia three times.
6 Rolimeter ™ 50A Anterior Drawer Test Apply the Rolimeter to the injured leg and hold the knee in 80° of flexion. Fix the foot in position by sitting on it. Precondition the knee by applying posterior translation force to the tibia three times. After preconditioning, ensure that the stylus foot rests against the center of the tuberosity, then slide the white indicator flush against the adjustment knob.
7 Rolimeter ™ 50A Service In the event of a problem occurring with the Rolimeter, return the unit, in the original container, to Aircast for repair or replacement. Replacement shipping containers are available through Aircast Customer Service. For orders or service, please contact Aircast Customer Service at: Phone: (800) 526-8785 Phone: (908) 273-6349 Fax: (800) 457-4221 Fax: (908) 273-1060 or write: Aircast Incorporated 92 River Road P.O.
8 Rolimeter ™ 50A Maintenance The following procedures should be performed before each use of the Rolimeter. 1. Check that the stylus slides through the adjustment knob and positioner with only slight pressure, and does not bind. 2. Verify that the white indicator slides over the stylus with only slight pressure, and does not bind. 3. Verify that the stylus, adjustment knob, positioner, and white indicator remain in position when adjusted. 4. Examine strap for tears or cracks.
9 Rolimeter ™ 50A Cleaning To ensure reliability and functionality of the Rolimeter, clean before initial use and after each procedure using either the Manual or Automated method. Manual Method 1. Soak in an enzyme cleaner suitable for stainless steel instruments. 2. Wash in surgical detergent and disinfecting solution at a temperature of 86°F to 95°F (30°C to 35°C). Remove any contamination from body fluids or tissues using a soft brush. 3.
10 Rolimeter ™ 50A Sterilization The Rolimeter is supplied unsterilized. To sterilize, steam autoclave prior to each use. Steam autoclave at a temperature of 270°F to 284°F (132°C to 140°C) for a minimum of 6 minutes (pre-vacuum). It is the responsibility of the end user to assure sterility of the product when using sterilization process recommended, since bioburden and sterilization equipment will vary. CAUTION After steam sterilization, allow Rolimeter to cool before applying to patient.
11 Rolimeter ™ 50A Notice Use of the Aircast® Rolimeter™ ligament test device in the United States in any manner other than for the passive anterior drawer test specifically described in the ‘Instructions for Using Your Aircast® Rolimeter™ Ligament Test Device’ may result in a claim of patent infringement under U.S. Patent No. 4,583,555 which could result in a finding of willful infringement, making the infringer liable for increased damages and attorney fees. Aircast, Inc.
12 Rolimeter Notes ™ 50A
Importer Manufacturer Georg-Wiesböck-Ring 12 D-83115 Neubeuern Tel: 00800-00 85 24 33 (free phone) 0049 8035 87 99 50 Fax: 00800-00 85 40 15 (free fax) 0049 8035 87 99 87 P.O.
