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Shoulder Nerve Injuries: What You Need to Know and How Physiotherapy Can Help 💡

If you’re dealing with pain, weakness, or strange sensations around your shoulder and arm, you might be wondering if a nerve injury could be the cause. 🤔 Nerve-related shoulder problems can be confusing, especially when symptoms don’t seem to match up with a clear muscle or joint issue.

As a shoulder physiotherapy clinic in Melbourne, we regularly see people who’ve been told they have a “nerve issue” affecting the shoulder—but aren’t sure what that really means. Let’s break it down in plain English, based on the latest clinical evidence and experience. ✅

What Is a Shoulder Nerve Injury? 🧠

A nerve injury affecting the shoulder occurs when one of the nerves that controls the muscles or sensation around the shoulder becomes compressed, stretched, inflamed, or in some cases, torn. These nerves are part of a complex network called the brachial plexus, which originates in the neck and travels down into the arm. 🪢

Common Types of Shoulder-Related Nerve Injuries ⚡

Here are some of the more common nerve injuries we see in people with shoulder complaints:

1. Axillary Nerve Injury

📍 Function: Controls the deltoid muscle (shoulder abduction) and sensation over the outer shoulder.
🔹 Common causes: Shoulder dislocation, blunt trauma, humeral neck fracture, or surgical complications.
🔸 Symptoms: Weakness lifting the arm sideways, numbness over the deltoid region, shoulder instability.

2. Suprascapular Nerve Entrapment

📍 Function: Controls the supraspinatus and infraspinatus (shoulder stabilisers and rotators).
🔹 Common causes: Repetitive overhead activity, labral tears, ganglion cysts, or traction injuries.
🔸 Symptoms: Deep ache in the shoulder, weakness with lifting or rotating the arm, especially in athletes or manual workers.

3. Long Thoracic Nerve Palsy

📍 Function: Controls the serratus anterior muscle (prevents scapular winging).
🔹 Common causes: Heavy lifting, blunt trauma, viral illness (e.g. Parsonage-Turner Syndrome), surgical traction.
🔸 Symptoms: Winged scapula, difficulty with overhead motion or pushing actions, shoulder fatigue.

4. Spinal Accessory Nerve Injury

📍 Function: Controls the trapezius (scapular elevation and stability).
🔹 Common causes: Neck surgery, lymph node biopsy, trauma.
🔸 Symptoms: Shoulder drooping, pain or fatigue, difficulty shrugging the shoulder.

5. Brachial Plexus Injury

📍 Function: Controls most of the arm.
🔹 Common causes: High-impact trauma (motorbike accidents, sports), stretching injuries, obstetric complications.
🔸 Symptoms: Varying degrees of weakness, numbness, and motor loss in the shoulder, arm, or hand.

⚠️ Note: Nerve compression from improper use of axillary crutches can also cause nerve injury, especially affecting the radial nerve or brachial plexus. This can lead to numbness, weakness, or even wrist drop.

What Are the Implications of a Shoulder Nerve Injury? 🩻

Unlike muscle strains or tendon inflammation, nerve injuries can have longer recovery times and may result in muscle wasting (atrophy) if left untreated. 😟

Because nerves also control sensation, you might experience numbness, tingling, or burning pain in specific zones of the shoulder or arm. If motor function is impaired, muscles can weaken significantly, altering shoulder mechanics and potentially leading to secondary joint or tendon issues.

Surgery vs. Conservative Management: What’s the Right Call? 🔍

Most nerve injuries do not require surgery.

🛠️ Surgery may be considered when:

🧘‍♂️ Conservative rehab is usually appropriate when:

💡 Even in cases requiring surgery, physiotherapy before and after the procedure is crucial for the best recovery outcomes.

What Is the Healing Timeline? ⏳

Nerve healing is slow. Unlike muscles or bones, nerves regenerate at a rate of roughly 1 mm per day. So a nerve injury that affects the shoulder may take several months to over a year to recover fully, depending on:

📣 It’s common to feel discouraged during recovery—but targeted physiotherapy can make a huge difference.

Current Clinical Approach to Managing Shoulder Nerve Injuries 🧑‍⚕️

An evidence-based approach typically includes:

🧪 Electrodiagnostic testing (EMG/NCS)
🖥️ Imaging (MRI or ultrasound)
⛔ Activity modification to reduce irritation
💊 Pain control: NSAIDs, nerve modulators, corticosteroids
📤 Referral to neurologist or surgeon when appropriate

The Role of Physiotherapy in Nerve Injury Recovery 🏋️‍♀️

Physiotherapy is central to the management of shoulder nerve injuries—whether you’re avoiding surgery or recovering after one.

✅ How physio can help:

👥 We also track your recovery closely and escalate care if needed.

A Personal Note from Melbourne Shoulder Rehab

As a clinic with deep expertise in shoulder and nerve conditions, we’ve helped people from all walks of life—overhead athletes, manual workers, and those recovering from trauma or Parsonage-Turner Syndrome.

We understand how frustrating nerve-related weakness and pain can be—especially when it feels like no one has answers. But with the right plan, nerve recovery is possible, and you don’t have to go through it alone. 🤝

Think You Might Have a Nerve Injury? 🤷‍♂️

If you’re experiencing unexplained weakness, numbness, or pain in your shoulder, don’t ignore it. Early assessment and treatment can make all the difference. ⏱️

👉 Book an expert consultation today at Melbourne Shoulder Rehab and let’s get you back on track—with clear answers and evidence-based care tailored to you.