AC Arthritis

An Overview of AC Arthritis

Arthritis affects millions of Americans. AC arthritis, or osteoarthritis of the acromioclavicular joint, is quite common in middle-aged adults. This specific type of shoulder arthritis develops when the AC joint begins to deteriorate from loss of cartilage, causing AC joint pain and a limited range of motion in the shoulder. Dr. Peter Millett, orthopedic shoulder specialist, cares for a wide range of AC joint injuries, including AC shoulder arthritis.

As individuals age, cartilage in the shoulder area begins to deteriorate from overuse or normal wear and tear. Many individuals who experience cartilage loss will develop osteoarthritis. AC shoulder arthritis, much like other forms of osteoarthritis, can cause joint pain, inflammation and swelling.

Other causes of AC arthritis include an old injury to the AC joint, such as an AC joint separation, or repetitive overhead lifting. Athletes participating in contact sports are also at a higher risk of developing shoulder arthritis in the future if a hard fall or blunt hit to the shoulder area is sustained.

What are the symptoms of AC Arthritis?

One of the most common symptoms of AC shoulder arthritis is AC joint pain, or shoulder pain. Other common symptoms include tenderness at the top of the shoulder, swelling and limited range of motion.

Are you experiencing pain from AC arthritis?

There are two ways to initiate a consultation with Dr. Millett:

You can provide current X-rays and/or MRIs for a clinical case review ($250).

You can schedule an office consultation with Dr. Millett.

Request Case Review or Office Consultation

How is AC Arthritis Diagnosed?

In order to properly diagnosis AC joint pain and the presence of AC arthritis, Dr. Millett will perform a thorough physical examination. He will examine the shoulder for tenderness over the AC joint and the level of pain experienced when the joint is compressed or in motion. X-rays and an MRI may also be performed to confirm the AC shoulder arthritis diagnosis.

How is AC Arthritis Treated?

In many cases, AC arthritis treatment will begin with conservative measures such as rest, ice, cortisone injections and medications. If conservative measures do not alleviate AC joint pain, Dr. Millett may recommend a surgical approach. The most common surgical procedure used to treat AC shoulder arthritis is resection arthroplasty. During this procedure, a small amount of bone from the end of the collarbone is removed. The removal of this area of bone leaves a space that gradually fills with scar tissue. The procedure is effective in fighting the painful symptoms of AC arthritis.

For additional resources on AC arthritis, please contact the orthopedic practice of Dr. Peter Millett.

Peter Millett, MD

Average rating:

39 reviews

Alexandra Thompson

Mar 23, 2024

by Alexandra Thompson on Peter Millett, MD

110%

Dr. Millett and his team did a SLAP tear repair and bicep tenodesis on my left shoulder. I use my arms as an artist, and love to swim in the ocean, surf, paddle, and telemark ski. So regaining full use of my shoulder and keeping my bicep attached was very important to me. Now, over two years later, my shoulder has the equivalent range of motion as my other arm and as before the injury, and no pain. After the first three months it felt so good and was so strong that - to my horror - I completely forgot my six-month follow-up.

Not only did Dr. Millett and his team make my arm as good as new, but having had the experience of such kindness and expertise throughout the process of surgery and recovery is like an added shoulder superpower.

Thank you Rita, Brooke, Jason, Sarah, Camille, Olivia, Dr. Millett and everyone! And see you soon when my husband comes in for his knee...

Jeff Chandler

Jan 31, 2022

by Jeff Chandler on Peter Millett, MD

Flawless procedure, Easy recovery

Dr. Millet's repaired my knee and tibia, following a botched operation by a different surgeon. That procedure was virtually pain free and I was weight bearing within a few days. That was 18 years ago and the knee is still strong. A few years after the knee incident, Dr Millet repaired my shoulder. My insurance company approved me for 3 months of disability following that surgery. I was off pain medication in 2 days and had 90% range of motion within a week. I withdrew my disability claim and returned to work within two weeks of surgery. I’m not a famous athlete—just a regular guy. Nonetheless, I was treated like an NFL at the Steadman clinic. Most notable was the time for recovery. Other surgeons perform their hour-long task in the OR and don’t involve themselves in the other functions. Peter and his team manages the entire process from diagnosis, anesthesia, nursing care, and therapy. He takes a holistic approach to patient care and doesn’t skip any steps.

Jenn West

Jul 2, 2021

by Jenn West on Peter Millett, MD

Saved My Life

I went to Dr. Millett after 7 knee surgeries (6 on my right and 1 on my left) and had seen 11 different surgeons who all refused to remove femur metal from my right leg. I am highly allergic to metal and the chronic pain was leaving me bedridden for 3.5wks out of a month. He personally wrote me back on my inquiry, listened to my concerns, scheduled my surgery within a week (due to insurance issues) and personally followed up with my recovery. The level of patient care from Dr. Millett and his ENTIRE team is above any care I have ever received in my 20 years of dealing with orthopedic surgeons. There are not enough words to describe the level of care, dedication and professionalism you receive from Dr. Millett and his staff.
My only disappointment is that I did not find him sooner!!!