What is Quadrilateral Space Syndrome (QSS)?

Quadrilateral Space Syndrome (QSS) is a rare condition that occurs when the axillary nerve and/or the posterior circumflex humeral artery get squeezed or compressed as they pass through a small area in the back of your shoulder called the 'quadrilateral space.' This compression can lead to pain, numbness, tingling, and weakness in your arm.

QSS is often caused by repetitive overhead activities, common in athletes like throwers, swimmers, and tennis players. It can also result from repeated motions that narrow the space (overuse), extra bands of tissue that can form and compress the nerve or artery (fibrous bands), trauma or injury such as a shoulder dislocation or a direct blow to the shoulder which can cause swelling or scar tissue, or muscle enlargement if muscles in the area grow significantly (e.g., in bodybuilders), they can crowd the space.

What are the common symptoms of QSS?

Symptoms typically include vague pain or a dull ache in the back of the shoulder, sometimes radiating down the arm; numbness, tingling, or a 'pins and needles' sensation in the shoulder and upper arm; pain that worsens with overhead movements or when your arm is in a 'throwing' position; tenderness when pressure is applied over the back of the shoulder in the quadrilateral space; weakness or fatigue in the arm, especially when lifting or rotating it; and sometimes, shrinking (atrophy) of certain shoulder muscles like the teres minor or deltoid.

How is QSS diagnosed?

Diagnosing QSS can be challenging because its symptoms can be similar to other shoulder problems. Your doctor will ask about your symptoms, activities, and any past injuries; perform a physical examination to check your shoulder's range of motion, strength, sensation, and tenderness; may order imaging tests like MRI or ultrasound to look at the quadrilateral space, assess muscle size, and check for any abnormalities or scarring. In some cases, nerve conduction studies (NCS) or electromyography (EMG) might be performed to evaluate how well the axillary nerve is working. An injection of local anesthetic into the quadrilateral space that temporarily relieves your symptoms can also help confirm the diagnosis.

What are the non-surgical treatment options?

Most cases of QSS improve with non-surgical treatment. These options focus on reducing pressure on the nerve and artery, managing pain, and restoring function: rest and activity modification (avoiding or modifying activities that worsen your symptoms, especially overhead movements); anti-inflammatory medications (over-the-counter or prescription NSAIDs like ibuprofen can help reduce pain and inflammation); ice or heat packs (applying ice can help reduce pain and inflammation, especially after activity, heat can help relax muscles); physical therapy (a physical therapist will guide you through exercises to maintain or improve shoulder range of motion and flexibility, strengthen the muscles around your shoulder to provide better support, improve posture and body mechanics); and corticosteroid injections (in some cases, your doctor may suggest an injection of corticosteroid medication into the area to reduce inflammation and pain).

When is surgery considered for QSS?

Surgery is usually considered if non-surgical treatments haven't significantly improved your symptoms after about six weeks or more; symptoms are severe or progressively worsening; or there's clear evidence of nerve damage or significant compression.

What does the surgical procedure involve?

The goal of surgery, called decompression, is to relieve pressure on the axillary nerve and posterior circumflex humeral artery. This typically involves making a small incision at the back of your shoulder; identifying the compressed nerve and artery; carefully removing or cutting any fibrous bands, scar tissue, or other abnormal structures that are causing the compression. The procedure is designed to free up the nerve and artery, allowing them to function normally.

What are the potential risks of surgery?

As with any surgery, there are potential risks, though QSS surgery is generally safe. These can include infection, bleeding, damage to surrounding nerves or blood vessels, scarring, persistent pain or incomplete relief of symptoms, and reaction to anesthesia. Your surgeon will discuss these risks with you in detail.

What do I need to do before surgery?

Your healthcare team will provide specific instructions, but generally, you may need to undergo a pre-operative physical examination and blood tests; stop certain medications (e.g., blood thinners, some anti-inflammatory drugs) a week or two before surgery; arrange for someone to drive you home after surgery and help you during the first few days of recovery; and avoid eating or drinking for a certain period before the surgery.

What can I expect immediately after surgery?

You will likely have your arm in a sling to help it rest and heal. You may experience some pain, which will be managed with medication. Your surgical site will be covered with a dressing. Your surgeon will give you instructions on wound care and activity restrictions.

How long is the typical recovery period?

Recovery times vary for each person, depending on the severity of the condition and how long the nerve was compressed. First few weeks (0-2 weeks): Focus on rest, pain management, and protecting the surgical site. Gentle elbow and wrist movements will be encouraged. Weeks 2-6: You will start physical therapy, focusing on gentle range-of-motion exercises for your shoulder. After 6 weeks: As healing progresses, your physical therapist will introduce strengthening exercises to rebuild muscle strength. Overall, it can take several weeks to months to feel significant improvement, as nerve healing is a slow process.

What does rehabilitation/physical therapy involve?

Physical therapy is crucial for a successful recovery. Your therapist will design a personalized program that may include pain and swelling management (using ice, gentle massage, or other techniques); range of motion exercises (to restore full movement in your shoulder); strengthening exercises (targeting the muscles around your shoulder, including the deltoid and teres minor, which may have been weakened); postural correction (to improve overall shoulder mechanics); and activity-specific training (gradually reintroducing movements related to your work, sports, or daily activities).

How will pain be managed?

Your doctor will prescribe pain medication to help manage discomfort after surgery. This may include prescription pain relievers (e.g., opioids for a short period); over-the-counter pain relievers (e.g., acetaminophen, ibuprofen) as recommended by your doctor. You may also use ice packs to reduce localized pain and swelling.

When can I expect to return to daily activities, work, driving, and sports?

This timeline varies greatly based on your recovery progress and the demands of your activities. Daily activities: Light daily activities can usually be resumed within a few days to weeks. Driving: You can typically drive once you are no longer taking strong pain medications and have sufficient control and range of motion in your shoulder to safely operate a vehicle (often a few weeks after surgery). Work: Return to work depends on the nature of your job. Light, desk-based work might be possible within a few weeks, while jobs requiring heavy lifting or repetitive overhead movements will take longer, potentially several months. Sports: A gradual return to sports, especially overhead activities, will be guided by your physical therapist and surgeon, often not for several months after surgery. Full return to competitive sports may take 3-6 months or longer.

What is the expected long-term outcome?

For many patients, surgical decompression of QSS provides significant relief from pain, numbness, and weakness, allowing them to return to their normal activities, including sports. Nerve healing can be slow, so improvement may continue for several months. While some mild symptoms may occasionally linger, the goal is to significantly improve your quality of life and shoulder function.

Surgical Shoulder Procedures

Proximal Humerus Open Reduction Internal Fixation (ORIF)

Get Clear, Concise Answers to Your Top Questions About Proximal Humerus Open Reduction Internal Fixation (ORIF)

If you have sustained a displaced proximal humerus fracture, your surgeon may recommend an Open Reduction Internal Fixation (ORIF) procedure. This guide answers key patient questions about preparation, the surgery, sling wear, and the rehabilitation process.

Q1. What is a proximal humerus fracture?

A proximal humerus fracture is a break in the upper part of the arm bone (humerus) close to the shoulder joint. This type of fracture often occurs due to a fall onto an outstretched hand, a direct blow to the shoulder, or high-energy trauma such as a car accident. It is particularly common in older adults who may have weakened bones due to osteoporosis.

Q2. What does ORIF stand for, and what does the surgery involve?

ORIF stands for Open Reduction Internal Fixation. During this surgical procedure:

Open Reduction: The surgeon makes an incision to access the shoulder and realign the fractured bone pieces back into their correct anatomical position.
Internal Fixation: The surgeon uses specialized metal plates, screws, or heavy sutures to securely hold the bone fragments together while they heal.

Q3. How do I know if I need ORIF surgery for my shoulder fracture?

While many shoulder fractures can heal with conservative treatments like sling immobilization, surgery is typically recommended if:

The bone fragments are significantly displaced or out of alignment.
The fracture involves multiple broken pieces (partially or fully comminuted).
The fracture involves the joint surface, which could lead to severe arthritis if left unaligned.
There is a high risk that the bone will not heal correctly (nonunion) or will heal in a bad position (malunion).

Q4. What are the main benefits of having ORIF surgery?

The primary benefits of ORIF surgery include:

Restored Alignment: Placing the bones back in their precise positions allows for optimal healing.
Early Mobility: Secure fixation allows you to start gentle rehabilitation sooner, reducing shoulder stiffness.
Pain Reduction: Stabilizing the broken bones helps alleviate severe pain during recovery.
Improved Function: Rebuilding the shoulder anatomy maximizes long-term shoulder strength, motion, and function.

Q5. What are the risks and potential complications of this procedure?

As with any surgery, there are risks, which include:

Infection or bleeding at the incision site.
Nerve or blood vessel damage around the shoulder.
Hardware irritation, where the plate or screws cause discomfort or limit movement.
Nonunion (the bone fails to heal) or malunion (the bone heals in a poor position).
Avascular necrosis, where the blood supply to the humeral head is disrupted, causing bone tissue damage.
Shoulder stiffness and loss of range of motion.

Q6. How should I prepare for my upcoming shoulder ORIF surgery?

To prepare for your surgery, you should:

Follow all pre-operative fasting (eating and drinking) instructions provided by your surgical team.
Arrange for a responsible adult to drive you home and assist you for the first 24 to 48 hours.
Set up your home environment beforehand, placing daily essentials within easy reach to avoid lifting.
Wear loose, comfortable clothing, preferably a button-down shirt that can easily fit over a large shoulder dressing and sling.

Q7. What type of anesthesia is used during the surgery?

Typically, a combination of general anesthesia and a regional nerve block is used:

General Anesthesia: This puts you to sleep for the duration of the procedure, ensuring you feel no pain.
Regional Nerve Block (Interscalene Block): An injection near the neck numbs the nerves supplying the shoulder and arm. This provides excellent pain relief during the surgery and for up to 12 to 24 hours afterward.

Q8. How long does the ORIF procedure take?

The surgery generally takes between 1.5 to 3 hours to complete. This timeline depends on the complexity of the fracture, the number of bone fragments, and the specific fixation methods required. Additional time is also needed before the surgery for preparation and anesthesia, as well as afterward for monitoring in the recovery room.

Q9. What should I expect immediately after surgery in the recovery room?

When you wake up in the recovery room:

Your arm will be placed in a protective sling or shoulder immobilizer.
Your shoulder and upper arm will feel numb if you received a nerve block.
Nurses will monitor your vital signs and administer pain medication if needed.
You will have a dressing over your shoulder incision, which must be kept clean and dry.

Q10. Will I need to wear a sling, and if so, for how long?

Yes, wearing a protective sling is essential to protect the surgical repair. You will generally need to wear the sling for 4 to 6 weeks. It is typically worn at all times, including while sleeping and walking. Your surgeon will instruct you when it is safe to temporarily remove the sling for gentle exercises, showering, and dressing.

Q11. How can I manage my pain after the surgery?

Pain management involves a combination of strategies:

Medications: Take prescribed pain relievers exactly as directed by your physician. You may transition to over-the-counter pain medications as discomfort decreases.
Ice Therapy: Applying ice packs or using a cold therapy unit for 15 to 20 minutes at a time can help reduce swelling and pain.
Elevation: Keeping your upper body slightly elevated helps prevent fluid buildup and swelling.

Q12. What is the safest way to sleep after a proximal humerus ORIF?

Sleeping can be challenging after shoulder surgery. The safest and most comfortable positions include:

Semi-Reclined Position: Sleep in a recliner chair or prop yourself up in bed with several pillows at a 45-degree angle.
Back Sleeping: If sleeping on your back, place a small pillow under your elbow and forearm on the surgical side to support the arm and prevent it from falling backward.
Never sleep on your stomach or on your side where you would put pressure on the operated shoulder.

Q13. When can I start physical therapy, and what does the rehabilitation process look like?

Rehabilitation begins very early, often within the first week after surgery:

Phase 1 (Weeks 1 to 6): Focuses on protecting the surgical site while performing passive range-of-motion exercises (where the therapist or your other arm moves your shoulder) and pendulum exercises.
Phase 2 (Weeks 6 to 12): Progresses to active-assisted and active range-of-motion exercises as the bone continues to heal.
Phase 3 (Month 3 and beyond): Introduces progressive strengthening exercises for the rotator cuff and surrounding shoulder muscles.

Q14. How long does it take for a proximal humerus fracture to heal completely?

The bone typically takes about 8 to 12 weeks to heal structurally. However, full recovery of shoulder strength, flexibility, and overall function can take anywhere from 6 to 12 months. Healing times can vary based on your age, overall health, bone quality, and adherence to your rehabilitation program.

Q15. When can I return to normal daily activities, driving, and work?

Your return to activities depends on your healing progress:

Light daily activities: Using your hand for eating or writing can usually begin within a few weeks, keeping your elbow close to your side.
Driving: You should not drive while wearing the sling or taking narcotic pain medications (typically 6 weeks or more).
Work: Desk jobs can often be resumed within 2 to 3 weeks, while manual labor or heavy lifting jobs may require 4 to 6 months.

We encourage you to write down any specific questions you have and discuss them thoroughly with your surgeon, doctor, or physical therapist. They are your best resource for personalized advice and care.

Disclaimer: This brochure provides general information and is not a substitute for professional medical advice. Always consult your doctor or qualified healthcare provider with any questions you may have regarding your specific medical condition and treatment plan.

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