SHOULDER REPLACEMENT COMPLICATIONS
Infection After
Shoulder Replacement
Infection after shoulder replacement is uncommon, but it is one of the most important causes of persistent pain, stiffness, swelling, or implant failure. Diagnosis can be challenging because shoulder infections may be subtle and develop slowly.
But Serious
Symptoms Can Be Mild
Requires Careful Workup
Sometimes Required
Why Shoulder Replacement Infection Can Be Difficult To Diagnose
Some infections after shoulder replacement are obvious, with fever, drainage, redness, or increasing pain. Others are much more subtle. Low-grade shoulder infections may cause persistent discomfort, stiffness, weakness, or implant loosening without dramatic signs of infection.
Dr. Streit's Clinical Perspective
Infection must be considered in any painful or poorly functioning shoulder replacement. The key is not assuming the cause. A careful diagnostic workup helps separate infection from stiffness, loosening, instability, fracture, rotator cuff failure, or other mechanical problems.
Symptoms That May Suggest Infection
More Obvious Signs
- Drainage from the incision
- Increasing redness
- Fever or chills
- Worsening swelling
- Increasing pain after surgery
More Subtle Signs
- Persistent pain
- Stiffness that does not improve
- Weakness or loss of function
- Pain that returns after initial improvement
- Unexplained implant loosening
How Infection Is Evaluated
Diagnosing infection after shoulder replacement often requires combining multiple sources of information. No single test is perfect.
History
Timing of pain, drainage, fever, prior surgeries, and symptom progression.
Exam
Incision appearance, swelling, motion, pain pattern, and shoulder function.
Testing
Blood work, aspiration, cultures, and additional laboratory analysis when appropriate.
Imaging
X-rays and CT scans may show loosening, bone loss, or other implant problems.
Why Cultures Matter
Some shoulder infections are caused by organisms that grow slowly and may not produce dramatic symptoms. When infection is suspected, cultures and careful laboratory evaluation are often essential to guide treatment.
The Goal Is A Precise Diagnosis
Treatment should be directed at the actual cause of pain. If infection is present, identifying the organism helps guide antibiotics, surgical planning, and the overall treatment strategy.
Treatment Options
Nonsurgical Or Limited Treatment
- Antibiotics in selected situations
- Close monitoring
- Laboratory follow-up
- Coordination with infectious disease specialists when appropriate
Surgical Treatment
- Irrigation and debridement in selected cases
- Implant exchange
- Staged revision surgery
- Antibiotic spacer placement when needed
- Conversion to reverse shoulder replacement in complex cases
When Revision Surgery Is Needed
If infection involves the implants or surrounding bone and soft tissue, revision surgery may be necessary. The strategy depends on the timing of infection, organism, implant fixation, bone quality, soft tissue condition, and patient health.
Early Infection
May sometimes be treated with urgent debridement and implant retention in selected patients.
Chronic Infection
Often requires a more complex revision strategy and prolonged treatment.
Complex Reconstruction
Bone loss, instability, or implant loosening may require advanced revision planning.
Related Resources
Concerned About Infection After Shoulder Replacement?
Persistent pain, drainage, swelling, stiffness, or implant loosening after shoulder replacement should be evaluated carefully. The first step is identifying the cause and building the right treatment plan.
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