Shoulder Implants

Anatomic Total Shoulder Replacement

Some of the clinical conditions that the Stay Active® Shoulder HemiCAP® system and the anatomic OVO® / OVOMotion® with Inlay Glenoid Shoulder Arthroplasty Systems are used to treat, are:

  • Avascular Necrosis (AVN)
  • Hillsachs Lesions
  • Post-traumatic degenerative disease
  • Osteoarthritis
  • Arthritis

The combination of an nonspherical humeral head implant and inlay glenoid has shown to be effective in not only active and younger patients but in all of those with glenohumeral arthritis even those facing posterior subluxation and bone erosion. This revolutionary stemless total shoulder system closely replicates native patient anatomy and provides equal or better pain relief and superior range of motion compared to traditional total shoulder replacements. *Data on file at Arthrosurface.

Restoring the shoulder joint with our Stay Active® HemiCAP®, or OVO® / OVOMotion® with Inlay Glenoid Shoulder Arthroplasty Systems, is truly an active alternative to a total shoulder replacement. The idea behind the anatomic Shoulder Implant systems is to prevent further damage to the joint while maintaining the patient’s native anatomy, motion and activity level. With no activity restrictions following recovery, patients are able to live independent active lifestyles. The systems consist of a cap (implant) and screw that mate together via taper lock. The implants match the diameter of the damaged area as well as the precise radius of both curvatures on the shoulders’ surface, superior to inferior (top to bottom) and medial to lateral (side to side). The Arthrosurface® screw system for minimally invasive shoulder surgery is a stable construct with no reported loosening. Less bone is removed, improved range of motion, and reduced pain are all benefits of our signature Shoulder Systems.

shoulder implants

In addition to the smaller sizes of the Shoulder HemiCAP®, the OVO® / OVOMotion® with Inlay Glenoid Total Shoulder is indicated for patients with advanced arthritis. The OVO® family of implants can be used alone on the humeral head or in conjunction with the HemiCAP GRS Inlay Glenoid implant (Inlay means that it is implanted into the bone rather than on top, leaving natural bone to support the implant around its edges). This stemless total shoulder arthroplasty system, helps preserve most of the bone in your shoulder while also fixing the damage to your glenoid. Unlike a traditional total shoulder replacement, The OVO does not use a full metal stem but rather a smaller screw (taper post). It simply places a smooth metal surface on the humeral head where the cartilage has worn away and places the plastic glenoid implant on the opposing side. This system does not limit any future weight bearing activities, such as weightlifting or lifting your children. Because this system recreates the native anatomy of the joint and is considered a load sharing device, there are no activity restrictions following recovery and it allows you to resume a normal, active lifestyle.

HemiCAP® technology was designed for patients who want to continue working, keep their active lifestyles and have a need for joint preservation treatments. Your surgeon should expect the Arthrosurface Shoulder HemiCAP and OVO implants to last as long as similar metallic devices but as always, it will depend on your general health, activity level, and adherence to your doctor’s orders following surgery. Over 100,000 patients have been treated with Arthrosurface® implants since 2003, with the majority still implanted over 15 years later.

Why Does My Shoulder Hurt?

An Injury or disease process (i.e. inflammation) that damages the cartilage maycause arthritis. A small cartilage injury could eventually grow and lead to cartilage loss, degenerative joint disease, and troublesome neck and shoulder pain. A variety of injuries can also damage your cartilage or cause rotator cuff pain, including trauma (dislocation), infection and inflammation. A traumatic injury can cause an isolated defect, while continuous overuse can cause widespread damage to both sides of the joint and result in shoulder surgery. shoulder replacementTypically, as the “wear and tear” on the shoulder joint progresses, bone spurs (osteophytes) can form on top of the bones. These bone spurs can cause pain when the shoulder moves and can limit the motion of the joint. With time, the spurs become larger, the cartilage starts to wear away and the shoulder joint becomes stiff. In the shoulder, this condition is called Degenerative Joint Disease (DJD).


Osteoarthritis (OA) is a degenerative joint disease that affects the cartilage in your joint and is one of the most common causes of shoulder pain. OA can be caused by aging joints, injury, obesity, weightlifting, and/or high impact sports. As a degenerative joint disease that causes the cartilage in your joints to soften and break down, your joints will slowly become stiff and painful. When that layer of cartilage is damaged or worn away, your bones grind against one another causing lesions and shoulder pain that hurts.  It may even keep you up at night. Osteoarthritis usually occurs in people over 50 years old, however, it’s possible for it to occur in younger people as well.

Osteonecrosis (AVN)

shoulder replacement surgeryThis condition is translated as “bone death” (osteo=bone, necrosis=death). Also known as avascular necrosis or AVN (avascular = loss of blood supply). Osteonecrosis is caused by lack of blood supply to the bone, resulting in the deterioration of bone tissue and the collapse of the bone. It can be triggered by a variety of factors including trauma, alcohol abuse, genetic abnormalities, pregnancy, systemic disease or corticosteroids use from receiving medical treatment (e.g., cancer treatments and organ transplantation). However, in approximately 25% of patients the cause is still unknown.

Traumatic Lesions

The most common type of traumatic injury is known as a “Hillsachs Lesion.” This most often occurs when you dislocate your shoulder. A shoulder dislocation causes the head of the shoulder to chip off pieces of bone and can even break a piece of bone from the front edge of the glenoid. The chipping can result in a lesion on the back of the head and it usually causes a tear of the labrum (soft tissue bumper) on the front edge of the glenoid. When 30% or more of the head is chipped off, the Hillsachs lesion is sufficiently large enough to engage or catch on the front of the glenoid, causing discomfort. While not all Hillsachs lesions are painful, this catching can result in a sore shoulder and severely limit your motion. To stop this from happening again, the surgeon needs to fill the defect on the back of the head to keep it from catching. This can be accomplished by placing a HemiCAP® implant into the defect, restoring the shape of the humeral head and allowing it to articulate again without catching.

  • No activity restrictions create an active alternative to shoulder replacement
  • It is custom matched and fit to a patient’s joint size and shape
  • Significantly less cartilage and bone is removed than traditional joint replacements
  • It is placed into the surface of the bone rather than on top, leaving the joint less surgically altered, and native anatomy intact.
  • Joint motion and the native structures are preserved so no bridges are burned for future revision options

With the Arthrosurface® Joint Restoration Systems, the surgeon only resurfaces the damaged area of the joint, similar to the way a dentist fills in a cavity. This leaves the rest of the structures in your joint intact so your native anatomy is preserved. The exposed and painful bone is covered while all the structures in your joint help you move and function properly are left in place. This differs from a total joint replacement which removes the entire head of the humerus, the rotator cuff and significant amounts of bone from the glenoid resulting in compromised supporting tissues. Because of the less invasive nature of this implant system, patients can expect shorter hospital stays, quicker recovery and the ability to live an independent active lifestyle following recovery.

Patients report outstanding pain relief, rapid recovery times and significant range of motion improvements in multi-center studies and the procedure may be performed on outpatient basis. Every surgery has risks and your prospects for a safe and successful surgery must be evaluated with your surgeon. If you are affected by osteonecrosis or cartilage damage caused by a previous injury, a successful joint restoration procedure may significantly improve your quality of life by reducing pain and restoring function. Many patients return to full activity after rehabilitation and go back to doing things that they had given up on in the years before surgery. After the surgical repair of a joint, your surgeon will provide you with specific post-operative instructions which you need to follow carefully. Post-operative rehabilitation recommendations will vary depending on the invasiveness of your surgery and your individual recovery patterns.  The immediate focus in all surgeries will be on swelling and pain management.  In some cases you may wear a brace for a few weeks and will be prescribed exercises and activities to strengthen your muscles. Here are a few helpful suggestions as you recover and rehabilitate from your surgery:

  • Follow the recommendations of your surgeon and physical therapist.
  • Keep a log to track your progress as you recover and increase activity.
  • Ask for assistance from family and friends to help with chores and errands during your recovery.
  • Wear loose, comfortable clothing during your recovery period.
  • Eliminate possible tripping hazards in your home – wires, cables, rugs, etc.
  • Return to any moderate or demanding activities should be guided by your tolerance for weight bearing.

Do you suffer from Shoulder Arthritis or pain and want to maintain and active or independent lifestyle? After trying non-operative treatments, such as steroid (cortisone) injections, physiotherapy, pain and anti-inflammatory medications, the pain relief is not receding. Now, the pain is serious enough that it is affecting your daily activities, your ability to work out and even your sleep. Most likely, you have been told that your next option is a total shoulder replacement but you don’t want a procedure that will restrict your active lifestyle.

  • Want to regain your active lifestyle (crossfit, weightlifting, running, etc.)
  • Want to live independently without restrictions (i.e. yard work, picking up grand kids, or children)
  • You have had a microfracture treatment and/or injections, but the pain has returned
  • You cannot afford lengthy rehabilitation time or excessive time off work
  • You want to fix your shoulder problem now versus waiting for further damage
  • Your surgeon has told you that you will need a traditional total shoulder replacement in the near future

*Seek professional medical advice for specific personal care.


shoulder replacement