Wondering if your breastbone is cut during heart surgery? Let's talk about sternotomy!

When your doctor tells you that you need heart surgery, hearing that they might need to open your chest can feel very scary and stressful. That worry is completely normal because nobody likes the idea of major surgery. However, heart surgeons perform this specific procedure every single day with great success. There is no need to panic or feel overwhelmed.

In this guide, we will break down everything in simple terms. We will explain what a sternotomy is, why doctors need to do it, how the procedure works step by step, and what you can expect during your recovery at home.

What Is a Sternotomy?

Simply put, a sternotomy is a surgical procedure where the flat bone right down the middle of your chest, known as the sternum or breastbone, is cut and separated into two halves. Some medical teams also refer to this procedure as a median sternotomy.

Think about the important organs inside your chest, such as your heart and lungs. Your breastbone and ribs form a strong protective cage around these vital organs, much like a natural shield. When you have a heart problem that requires a major operation, your surgeon needs a direct and safe pathway to reach your heart. Cutting down the middle of the breastbone and gently spreading the halves apart creates the best and most reliable path for the surgical team.

In some specific cases, surgeons perform a mini sternotomy instead of cutting the entire breastbone. This smaller version involves making just a short incision measuring about two to three inches.

Is Open Heart Surgery the Same Thing, and Is This a Major Operation?

Many people confuse these two terms, but they mean different things. A sternotomy is the method used to open the chest and create a clear path to perform an open heart surgery. Think of it like unlocking the front door of your house when you need to fix something inside. The sternotomy opens the door. This the actual repair work done on your heart is the open heart surgery.

Yes, medical professionals consider this a major operation. After the surgeon cuts the bone, it takes about two months for the bone to knit back together and heal completely. Because this procedure forms part of a larger open heart operation, the combined experience makes it a significant medical event.

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Why Do Doctors Need to Perform This Surgery?

A surgeon uses this technique when they need to reach organs protected by your breastbone and rib cage. The most common reasons include:

• The Heart: Surgeons use this approach to repair or replace damaged heart valves or to perform coronary artery bypass graft surgery.
• The Aorta: This is the main blood vessel carrying blood away from your heart, and doctors operate here to fix dangerous bulges or tears.
• Pulmonary Arteries: Surgeons use this pathway to reach the main blood vessels that carry blood from your heart to your lungs.

A sternotomy is not a treatment that cures a disease on its own. Instead, it is an access route that gives the surgical team the room they need to perform life-saving work safely. In countries like the United States, doctors perform hundreds of thousands of these procedures every year, making it a very standard medical practice.

What Happens Before Your Surgery?

Before your scheduled operation date, your medical team will give you several important instructions to prepare your body:

• Your care team will ask you to take a thorough bath or shower with antiseptic soap before coming to the hospital.
• Nurses will carefully remove any hair from your chest area to keep the surgical site clean.
• Doctors will give you preventative antibiotic medicines to lower your risk of developing an infection.
• The medical staff will thoroughly clean and disinfect the skin over your chest where the incision will be made.

The Surgical Process Step by Step

Reading about this procedure might feel a bit intimidating, but remember that you will receive strong general anesthesia and fall into a deep, painless sleep before anything begins. You will not feel a thing while it happens.

1. First, the surgeon makes a straight cut through the skin starting near the top of your chest bone and moving downward.
2. Next, the surgeon uses a specialized surgical instrument called a sternal saw to cut carefully down the center of the breastbone from top to bottom.
3. The surgical team then uses a specialized instrument called a retractor to gently separate the two cut bone halves, creating an open pathway to the heart.
4. After that, the surgeon opens the thin, protective sac surrounding the heart, known as the pericardium.
5. Now the surgical team has a clear view of your heart and can perform the main operation, such as a bypass or valve repair.
6. Once the main heart repair is finished, the surgeon brings the cut breastbone halves back together. They use about eight to twelve small stainless steel sternotomy wires to secure the bone tightly, much like tying together something that was split apart.
7. Finally, the medical team closes your skin and chest tissues with stitches or staples and applies a sterile protective dressing over the wound.

What to Expect After Surgery

Right after your operation, you will spend one or two days recovering closely in the intensive care unit before moving to a regular hospital room.

• Pain Management: You will naturally feel some soreness around your chest area after waking up. Your doctor will give you safe pain relief medicines, such as paracetamol, to keep you comfortable.
• Chest Tubes: Doctors place one or more small temporary tubes in your chest to drain extra fluid and blood after surgery. The medical team removes these tubes after a couple of days.
• Special Guidance for Women: If you have larger breasts, doctors recommend wearing a supportive bra twenty-four hours a day for the first one to two weeks after leaving the hospital. This extra support helps reduce weight and pulling pressure on your healing chest wound.

The Benefits and Risks of This Procedure

Like any medical operation, a sternotomy brings both great medical benefits and some standard surgical risks.

Benefits	Risks and Complications
Gives the surgical team exceptional and direct access to your heart and major blood vessels.	Risk of wound infection at the incision site.
Proven, highly reliable technique that most patients tolerate very well.	Potential for excessive bleeding during or after the procedure.
Allows doctors to perform complex, life-saving repairs quickly and safely.	Temporary abnormal heart rhythms.
Low overall complication rate when managed by experienced surgical teams.	Swelling, bruising, or delayed bone healing.

Healing and Taking Care of Yourself at Home

Your breastbone needs about eight full weeks to heal and fuse back together completely. During this recovery window, you must limit upper body movements. Following your surgeon's specific rules is extremely important for a smooth recovery.

Remember that your breastbone needs stable healing conditions, so you must completely avoid activities that put unnecessary strain on your chest.

• Avoid Heavy Lifting: Do not lift anything weighing more than ten pounds, which is roughly equal to four liters of milk.
• Use Both Arms Equally: If you need to pick up an object, use both arms evenly and together. Never lift heavy items using just one arm.
• Keep Your Arms Close: When moving or pushing yourself up from a chair, keep your arms tucked in close to your body.

A Note on Driving

You can usually start driving again about one month after your surgery, but you must get direct approval from your doctor first. While your breastbone is still healing, sitting in the front passenger seat is a safer option when traveling in a car. Even if your seatbelt feels a bit uncomfortable across your chest, always wear your seatbelt because it protects you safely in case of a sudden stop or accident.

When to Seek Emergency Help

Call 911 (US/Canada) or 999 (UK) right away, or go to the nearest emergency department if you experience severe chest pain, sudden shortness of breath, or heavy bleeding.

Contact your doctor right away if you notice:

• Severe or worsening pain around your breastbone that does not get better with medicine.
• A feeling that your breastbone is moving or shifting when you cough, laugh, or twist your body.
• Unusual clicking or popping sounds coming from your chest area.
• Signs of infection at your incision, such as pus, foul drainage, worsening redness, or swelling.

A Note from Dr. Priya Sammani