Frequently Asked Questions

What is the Function of the Distal Radioulnar Joint?

A healthy distal radioulnar joint allows you to lift weight without pain.

What is the Intended Outcome of This Operation?

  • The reduction or elimination of pain
  • Regained motion in the wrist/forearm
  • Improved ability to lift and bear weight

How Long Will the Operation Last?

On average, the procedure will last between 1.5 and 2 hours.

Is This an Outpatient Procedure or Will I Have to Stay in the Hospital?

With very few exceptions, this is normally an outpatient procedure.

How Can I Get the Prosthesis?

Visit your doctor and ask about the Aptis prosthesis (aka Scheker prosthesis).

What is the Life Expectancy of the Aptis Druj?

We are currently estimating a life expectancy of approximately 20 years.

How Many Pounds Can I Lift After the Prosthesis is in Place?

The recommended maximum is 20lbs on the affected extremity.

Is the Prosthesis FDA Cleared?

Yes, the Aptis prosthesis has been cleared by the FDA for sale in the United States since 2005.

Is the Aptis Prosthesis Available in Europe?

Yes, the prosthesis is CE marked and has been available since 2005.

Is There Any Medical Risk From the Device?

There are risks with any implantable device. Due to the prosthesis being manufactured out of Cobalt Chrome, patients with nickel allergies should be tested before the procedure to prevent any possible allergic reactions.

Is This Operation Covered by My Insurance?

This device and the corresponding procedure may be covered by your insurance. Be sure to check with your health care provider.

Are Patients With Arthritis Candidates for the Aptis Druj?

Yes. One of the intended uses is to help patients with rheumatoid, degenerative or post-traumatic arthritis.

Can the Aptis Druj Be Used in Patients When Other Druj Prostheses Have Failed?

Yes, this prosthesis has been used to replace other prostheses that have failed due to their inability to remain stable or wearing into the bone.

Can This Device Be Used in Patients Who Have Had Part of the Ulna Removed by Other Arthroplasties?

Yes, we have ulnar stems that extend up to 4 cm.

What Else Can Be Done for Druj Pain if I Haven’t Had the Head of My Ulna Removed?

The two best options are ligament reconstruction or ulnar shortening. Consult your physician about these options prior to any sort of ulnar head removal or replacement.

How Does Having an Implant Impact Going to the Dentist?

After joint replacement, patients with certain risk factors may need to take antibiotics prior to dental work, including dental cleanings, or before any surgical procedure that could allow bacteria to enter the bloodstream. Your surgeon will discuss with you whether taking preventive antibiotics before dental procedures is needed in your situation.

Can I Have an MRI With the Aptis Prosthesis?

Non-clinical testing has demonstrated the Aptis DRUJ prosthesis is MR Conditional. Please consult your physician and make sure they are aware of the following information:

The Aptis DRUJ can be scanned safely under the following conditions:

  • Static magnetic field of 3-Tesla or 1.5-Tesla
  • Maximum spatial field gradient of 1900-Gauss/cm
  • Maximum MR system reported, whole body averaged specific absorption rate (SAR) of 1-W/kg (Normal Mode)

In non-clinical testing, the Aptis DRUJ prosthesis produced a temperature rise of less than 7.5°C at a maximum MR system reported, whole body averaged specific absorption rate (SAR) of 1-W/kg for 14 minutes of MR scanning in a 1.5-T or 3-T MR system. The image artifact caused by the device extends approximately 60mm from the Aptis DRUJ Prosthesis when imaged with a gradient echo pulse sequence and a 3-T MR system.