What Is AC Joint Reconstruction Surgery?

AC joint (acromioclavicular) reconstruction is an orthopedic surgery used to repair a severely separated or dislocated shoulder joint. During this procedure, surgeons replace torn ligaments with a tissue graft and realign the collarbone (clavicle) to restore shoulder joint stability.

At Total Orthopedics and Sports Medicine, our surgeon, Dr. Charles Ruotolo, reviews your imaging scans, shoulder function, activity level, and age before recommending AC joint surgery. Then, he designs a personalized surgical approach to support faster recovery and a safe return to daily activities. We also offer a secure online patient portal with clear post-surgical instructions to keep you informed during recovery. Call 855-321-6784 to book an appointment in Massapequa.

How Does AC Joint Reconstruction Surgery Work?

AC joint reconstruction surgery restores stable alignment between the collarbone and the upper part of the shoulder blade after a severe AC joint dislocation. During arthroscopic surgery, the surgeon creates three tiny holes or a 2cm incision over the top of the shoulder and removes a small portion of the collarbone to reduce bone-on-bone contact. However, open surgery involves a larger incision to reconstruct ligaments.

Once the joint is prepared, the surgeon positions a tendon graft around the coracoid process (a bony hook on the front of the shoulder blade) to reconstruct the coracoclavicular (CC) ligaments. Then, the surgeon anchors the graft to the collarbone and supports controlled shoulder movement.

In addition, surgeons use specialized hardware, such as titanium buttons or strong artificial sutures, to hold the collarbone in its correct position while the graft heals and the AC joint regains stable function. This approach improves shoulder alignment, reduces long-term pain, and supports a confident return to daily and sports activities. In fact, research published in the Sage journal found that 81% of patients reported significant pain relief and functional improvement after AC joint surgery.

Which Factors Lead to AC Joint Separation?

Direct blows to the shoulder or falling onto an outstretched hand increase the risk of AC joint separation. High-impact sports such as football, hockey, rugby, skiing, and martial arts may also cause dislocation, as repeated collisions can apply direct force to the top of the shoulder. Over time, this force can overload the ligaments that stabilize the AC joint, leading to sudden instability and tears.

In addition, the following activity patterns and physical factors lead to AC joint injury:

• Weightlifting and Overuse: Repetitive overhead lifting or heavy presses strain the ligaments around the AC joint.
• High-volume Training: Frequent practice sessions with poor recovery lead to repeated joint loading.
• Physical Labor: Jobs with heavy lifting or constant overhead work can strain the top of the shoulder.
• Direct Workplace Impacts: Regularly bumping or falling onto tools or machinery can injure the AC joint.
• Upper Back Stiffness: Limited movement in the upper back and rib cage reduces shock absorption.
• Muscle Weakness and Imbalance: Weak rotator cuff, deltoid, or trapezius muscles provide less natural support.
• Poor Posture: Rounded shoulders and forward head posture change joint mechanics and overload the AC joint.

When Is AC Joint Reconstruction Recommended?

Our surgeon, Dr. Charles Ruotolo, recommends AC joint (acromioclavicular) reconstruction if non-surgical treatments, such as medication and rest, do not relieve chronic pain or shoulder instability. He also recommends surgery for younger athletes and manual laborers who have severe shoulder injuries with complete ligament tears and ongoing loss of shoulder function.

In such cases, reconstruction restores joint stability and supports a safer return to demanding work or high-level sports. In fact, a case study in the ScienceVolks journal followed a 16-year-old high-level athlete with a severe AC joint dislocation. After reconstruction surgery, his shoulder strength and control improved during overhead movements. By the end of follow-up, imaging and physical exam findings showed stable joint alignment, and he returned to sport without discomfort.

What Preoperative Tests Do You Need Before Surgery?

Before AC joint reconstruction, your orthopedic surgeon typically orders bilateral shoulder X‑rays and MRI scans to assess joint alignment and overall shoulder structure. He may also use diagnostic ultrasound to evaluate AC joint morphology and deliver a targeted anesthetic injection to confirm the exact source of pain.

If needed, blood tests such as a Complete Blood Count and a metabolic panel are recommended to check for infection, anemia, and general medical fitness for the procedure. Moreover, based on your age (usually 50+) or any underlying health conditions, your orthopedic surgeon may recommend the following tests:

• Electrocardiogram (ECG): Evaluate your cardiac rhythm and electrical activity before anesthesia.
• Chest X‑ray: Imaging of the lungs and chest to confirm your respiratory system disorders.
• Urine analysis: A laboratory check of your urine to identify any kidney problems or infections that could affect recovery.
• Coagulation studies: Ensure your clotting function is safe, especially if you take regular medications that affect bleeding.

How Do Surgeons Decide That You Need AC Joint Reconstruction?

Our surgeon, Dr. Charles Ruotolo, determines your eligibility for AC joint reconstruction based on the severity of the shoulder separation, the stability of the joint, and your activity level. He also reviews your age, sport, and work demands to design personalized treatment aligned with your daily routine and future goals.

Beyond that, he examines the overall condition of your shoulder and imaging studies, such as X-rays and MRI scans, to assess ligament damage and the position of the collarbone. This structured review guides the selection of surgical repair and supports better long-term shoulder function.

In addition, our orthopedic specialists, Dr. Charles Ruotolo, select the right surgical approach based on the following injury grade:

Grade I and Grade II AC joint injuries

Grade I and Grade II injuries cause mild ligament damage, while the acromioclavicular joint maintains a normal alignment. For these mild separations, our surgeons typically recommend non-surgical care, such as a sling, pain control, and guided exercises, to restore shoulder function. With this approach, most people return to normal activities and sports once pain and strength improve.

Grade III AC joint injuries

Grade III injuries cause complete ligament tears and a noticeable upward shift of the collarbone at the top of the shoulder. You also notice a visible bump and weakness in certain arm movements. In these cases, surgeons usually guide structured, targeted rehabilitation and activity changes to reduce symptoms and strengthen muscles. If pain and instability persist, reconstruction surgery restores a more secure joint position and improves shoulder function for daily life and sport.

Grade IV AC joint injuries

Grade IV injuries push the collarbone backward into the trapezius muscle behind the shoulder joint. This backward shift disrupts normal joint mechanics and can compress soft tissues around the shoulder. Because the deformity is noticeable and the joint position changes significantly, non-surgical care does not correct the underlying problem. Without proper treatment, this joint instability can lead to severe complications such as:

• Chronic shoulder pain
• Progressive weakness in the upper body
• Limited overhead arm movement
• Early joint degeneration (arthritis)
• Ongoing cosmetic deformity

Grade V and Grade VI AC joint injuries

Grade V injuries pull the collarbone significantly higher than its normal line at the top of the shoulder, which signals major ligament damage. In contrast, Grade VI injuries push the collarbone downward, beneath nearby muscles, and cause severe dislocation. Both grades cause significant loss of shoulder stability and soft-tissue disruption. Due to this severe structural damage, reconstruction surgery is generally required to realign the joint and protect shoulder function.

Which Surgical Techniques Help Rebuild The AC Joint?

Suspensory button fixation and biological ligament reconstruction with tendon grafts help restore AC joint alignment and stabilize the shoulder. Surgeons may also perform open or arthroscopic anatomic coracoclavicular reconstruction and use direct AC joint fixation with hardware to stabilize the clavicle. In some cases, the Weaver–Dunn procedure, capsule reconstruction, and distal clavicle resection provide support and pain relief in chronic deformity.

Here is how these procedures realign the clavicle and rebuild the stability of the shoulder girdle:

Suspensory Fixation & Cortical Buttons

Suspensory fixation with cortical buttons is a minimally invasive or arthroscopic‑assisted option for AC joint reconstruction. During the procedure, surgeons drill small tunnels through the clavicle and pass high‑strength sutures or tapes through these channels. Then, these sutures are secured with titanium cortical buttons on the clavicle and the scapula, called the coracoid process, to hold the bones in the correct position. This approach provides vertical stability while the damaged acromioclavicular and coracoclavicular ligaments heal.

Biological Ligament Reconstruction (Tendon Grafts)

An orthopedic surgeon recommends biological ligament reconstruction in chronic dislocations or severe acute tears. In this technique, surgeons use an autograft (your own tendon) or an allograft (donor tendon) to recreate the coracoclavicular ligaments. The graft is then looped around the coracoid and fixed into the clavicle using tunnels, screws, or buttons to reproduce the conoid and trapezoid bundles. This biologic reconstruction uses suture‑tape “internal bracing” to protect the graft during the healing process.

Weaver–Dunn Procedure

During the Weaver–Dunn procedure, the surgeon removes a small portion of the outer end of the clavicle (distal clavicle resection) to relieve pain. Then, the coracoacromial ligament is detached from the acromion and transferred to the cut end of the clavicle (a bony projection). This transferred ligament functions as a substitute for the torn coracoclavicular ligaments and restores shoulder stability.

In fact, a research study published in the Indian Journal of Orthopedics found that the modified Weaver–Dunn procedure provides long‑term functional outcomes for AC joint reconstruction. In that study, 35 patients were examined, and most returned to their pre-injury level of activity. At the mean follow-up of 95 months, research found the following clinical outcomes after surgery:

• Mean Oxford Shoulder Score: improved from 25 ± 7.2 to 43 ± 6.9
• Satisfactory outcome: 85% of patients (30 out of 35)
• Mild shoulder dysfunction: 15% of patients (5 out of 35)
• Radiological Grade 2 ACJ subluxation: 5 patients
• Ossification around the coracoclavicular ligament: 2 of those 5 patients
• Intermittent mild pain without functional disability: 3 patients
• Moderate restriction of shoulder movement: 1 patient

Direct AC Joint Fixation & Hardware

Direct AC joint fixation uses metal implants to hold the clavicle in position relative to the acromion while the joint heals. These devices provide short-term mechanical stability and require a revision surgery to remove the hardware. They also carry high risks such as hardware irritation, migration, or joint stiffness. For this reason, surgeons usually prefer ligament‑based reconstructions and suspensory button systems instead of AC joint fixation.

What Can You Expect On The Day Of Your Shoulder Surgery?

On the day of your AC Joint Repair, your surgeon completes a preoperative check‑in and examines the surgical shoulder. Then, your surgeon and medical team review the plan and administer general anesthesia. After the procedure, you will wake up in the recovery room with your arm supported in a sling while nurses monitor your pain, vital signs, and initial comfort. Once your condition is stable, you will be discharged home or to a ward to continue your early recovery.

Which Anesthesia Is Used For AC Joint Reconstruction?

Surgeons use a combination of general anesthesia and a regional nerve block during acromio-clavicular joint reconstruction. This approach keeps you fully asleep and unaware during surgery while the nerve block numbs the shoulder and arm. It also reduces pain and the need for strong opioid medicines in the hours after the procedure to ensure a smooth healing process. However, before finalizing your anesthesia plan, your anesthesiologist carefully considers several risk factors, such as:

• Age and overall physical fitness
• History of heart or lung disease
• Previous reactions to anesthesia or medications
• Presence of diabetes, high blood pressure, or other chronic illnesses
• Current infections, fever, or recent illness
• Kidney or liver function problems
• Smoking status, alcohol use, or recreational drug use
• Body weight and the presence of obesity or sleep apnea
• Ongoing blood‑thinning or other high‑risk medications
• Pregnancy status in women of childbearing age

What Are The Key Surgical Risks Of AC Joint Surgery?

You may notice infection, nerve or blood vessel injury, and stiffness or limited shoulder movement after AC joint surgery. Over time, irritation from the hardware, fractures of nearby bones, and loss of AC joint alignment can also affect shoulder function. In some cases, patients experience ongoing shoulder pain, delayed healing, or need another operation to correct problems.

In fact, a large NIH‑supported systematic review found a superficial infection rate of about 3.8% after AC joint reconstruction. Residual shoulder or AC joint pain and hardware irritation occurred in roughly 26.7% of patients. The review also reported coracoid or clavicle fractures in about 5.3% of cases treated with bony tunnel techniques. Beyond that, about 26.8% of patients experience loss of AC joint reduction during follow‑up.

How Painful Is AC Joint Reconstruction Surgery And Recovery?

You generally do not feel pain during AC joint reconstruction surgery because the procedure is performed under general anesthesia. A regional nerve block also numbs the shoulder and arm, which helps keep you comfortable during and right after the operation. However, as the nerve block wears off over the first 3–5 days, most patients experience moderate pain, which is usually managed with medication and ice.

During weeks 1–3, you may notice that pain gradually becomes a dull, more manageable ache. However, sharp pain can still occur if the shoulder is bumped or moved too far. For this reason, you should take pain medication as prescribed, attend guided therapy, and closely follow sling use and movement restrictions such as:

• Avoid overhead reaching with the surgical arm
• Limit lifting or carrying any objects with the injured arm
• Refrain from pushing or pulling heavy items or doors
• Try to prevent any sudden or jerky arm movements
• Do not use the surgical arm to support body weight when standing up or moving

When Can You Return To Work After AC Joint Surgery?  

Most patients can return to desk‑based office work within about 2–4 weeks after AC joint reconstruction surgery. In contrast, manual laborers and weight lifters usually need 3–4 months to regain safe, functional shoulder movement. During this time, shoulder strength and motion improve gradually with home exercises. Sutures are also usually removed within 12–14 days after surgery to ensure the wound is healing properly. Once your shoulder has sufficient strength and control, you can resume more demanding activities such as contact sports within about 4–6 months. However, the overall recovery time may vary depending on the following factors:

• Severity of the original AC joint injury
• Stability and quality of the surgical repair
• Consistency with home exercises and activity limits
• General health, age, and fitness level
• Previcious acromioclavicular ligaments injury
• Level of pain, swelling, and wound healing

How Does an Exercise Plan Support Your Shoulder Healing?

An exercise plan prevents stiffness, promotes tissue remodeling, and rebuilds the muscles that protect the joint. It also improves blood flow and stimulates collagen fibers healing without putting excess stress on the surgical repair. Beyond that, early guided exercises prevent the deltoid muscle from weakening, restore scapular control, and full range of motion. As your recovery progresses, sport‑specific or work‑specific drills will help with recovery and strength restoration.

Consult Dr.Charles Ruotolo For Advanced AC Joint Surgery In Massapequa!

A significant AC joint separation can make simple tasks like dressing, driving, or reaching into a cupboard more challenging. You may struggle to sleep comfortably and worry about your ability to work or play sports. Over time, the constant discomfort can affect your independence, especially if your job or hobbies require full-arm use.

Recognized as the Best Orthopedist on Long Island, our surgeon, Dr. Charles Ruotolo, at Total Orthopedics and Sports Medicine, uses modern arthroscopic techniques to treat AC joint injuries with precision. During surgery, he uses intraoperative neuroimaging to reduce tissue trauma and lower the risk of complications. He also guides you through structured rehabilitation, activity milestones, and close follow‑up to help you safely return to full activity. Call 855-321-6784 or visit our clinic in Massapequa for advanced AC joint surgery.

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