Why Do Shoulders Hurt After Surgery?

Shoulder surgery can be a necessary step toward improving mobility and reducing chronic discomfort. Following such a procedure, experiencing pain is a common aspect of the recovery process. This post-surgical discomfort can vary in intensity and duration depending on the individual and the specific surgical intervention.

Immediate Post-Operative Pain Sources

Pain experienced immediately after shoulder surgery stems from the body’s natural response to trauma. During the procedure, tissues such as muscles, ligaments, and tendons are cut, stretched, or manipulated, leading to direct tissue injury. This manipulation initiates an inflammatory response, where the body sends immune cells to the surgical site, causing swelling and pain. The pain can be sharp and localized to the incision area, reflecting the direct damage to skin and underlying tissues.

The effects of anesthesia wearing off also contribute to immediate post-operative pain. While regional nerve blocks can provide pain relief for a short period, this numbing sensation gradually diminishes, allowing pain signals to become more apparent.

The positioning of the body during surgery, which can sometimes involve extended periods in certain postures, may also lead to discomfort or strain in areas beyond the immediate surgical field. The initial 24 to 48 hours post-surgery are typically the most painful period as these acute effects are at their peak.

Pain During the Healing Process

As the initial acute pain subsides, discomfort continues as the body repairs the surgical site. Inflammation persists with immune cells clearing debris and initiating tissue regeneration. This ongoing inflammatory process can cause prolonged soreness and tenderness around the shoulder joint. Muscle spasms are also common during this phase, occurring as a protective mechanism or a reaction to the trauma and disuse, which can manifest as painful twitching or cramping in the muscles surrounding the shoulder.

The formation of scar tissue is a natural part of wound healing, but it can contribute to pain and stiffness. As the body lays down new collagen fibers to repair damaged tissues, this scar tissue can become tight and less flexible than original tissue, restricting movement and causing discomfort. Physical therapy, which typically begins days to weeks after surgery, can also cause soreness. While designed to restore strength and range of motion, the exercises involved in physical therapy can stretch healing tissues and challenge recovering muscles, leading to temporary increases in pain or discomfort.

Nerve-Related and Referred Pain

Nerve irritation can be a source of discomfort after shoulder surgery. Nerves may be stretched, compressed, or directly affected during the surgical procedure. This can result in neuropathic pain, described as burning, tingling, numbness, or shooting sensations that may radiate down the arm or up into the neck. Nerve injuries can lead to persistent symptoms.

Referred pain is discomfort felt in the shoulder but originates from a different part of the body. For example, irritation of the phrenic nerve, which innervates the diaphragm, can cause shoulder pain, particularly after laparoscopic procedures where gas is used to inflate the abdomen. Conditions affecting the neck, such as a pinched nerve, or issues with internal organs like the heart, gallstones, or even lung problems, can also manifest as shoulder pain. This type of pain may not change with shoulder movement, indicating its origin is elsewhere.

When Pain Indicates a Problem

While some pain is expected after shoulder surgery, certain symptoms can signal a complication requiring prompt medical attention. A sudden, sharp increase in pain that is not relieved by prescribed medication, or pain that worsens over time instead of improving, warrants immediate evaluation. Signs of infection include increasing redness, warmth, swelling, or pus-like drainage around the incision site, often accompanied by a fever or chills.

Significant swelling that increases rapidly, new or worsening numbness, tingling, or weakness in the arm or hand, and a sudden inability to move the arm are also indicators of a problem. Complications like blood clots or deep infections require urgent medical assessment. Report any concerning or unexpected changes in pain or other symptoms to the surgical team.

What Is an EZH2 Inhibitor and How Does It Work?

Thyroid Atrophy: Causes, Symptoms, and Treatment

What Does It Mean If You Have a Spot on Your Lung?