Olecranon Bursitis
Olecranon bursitis (swelling of the bursa sac over the tip of the elbow) is a common and usually benign condition. However, distinguishing septic from aseptic bursitis is the most critical clinical decision, as septic bursitis requires antibiotic therapy and may need surgical drainage. At Maryland Orthopedic Specialists, we provide same-day evaluation, bursal aspiration with fluid analysis, and comprehensive management of all forms of olecranon bursitis.
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What is olecranon bursitis?
The olecranon bursa is a fluid-filled sac overlying the olecranon process at the posterior elbow tip. It reduces friction between the skin and the bony prominence. When irritated or infected, the bursa fills with fluid, producing the characteristic soft, fluctuant swelling.
The olecranon bursa is a fluid-filled sac overlying the olecranon process at the posterior elbow tip. It reduces friction between the skin and the bony prominence. When irritated or infected, the bursa fills with fluid, producing the characteristic soft, fluctuant swelling.
Causes:
- Traumatic / repetitive pressure: The most common cause. Prolonged leaning on the elbow (students, plumbers, miners, hence "miner's elbow") or a direct blow causes bursal irritation and hemorrhagic effusion.
- Inflammatory (crystal-related): Gout (urate crystal deposition) and pseudogout (calcium pyrophosphate) cause inflammatory bursitis. Rheumatoid arthritis (RA) also produces olecranon bursitis as part of systemic inflammatory joint disease.
- Septic (infectious): The most serious form. Staphylococcus aureus accounts for ~80% of cases. Bacteria enter via skin breakdown over the posterior elbow, minor puncture wounds, or hematogenous spread. Diabetics and immunocompromised patients are at elevated risk.
Distinguishing septic from aseptic bursitis is paramount:
- Skin erythema/warmth: Aseptic — Mild or absent; Septic — Usually prominent
- Systemic signs (fever, leukocytosis): Aseptic — Absent; Septic — May be present
- Bursal fluid WBC: Aseptic — < 2,000–5,000/µL; Septic — > 50,000/µL (may be lower)
- Bursal fluid Gram stain/culture: Aseptic — Negative; Septic — Positive (~70%)
- Crystal analysis: Aseptic — Positive in gout/pseudogout; Septic — Negative
Symptoms — do you recognize these?
- Soft, fluctuant swelling at the posterior elbow tip
- Pain ranges from mild to severe depending on etiology
- Warmth and erythema of overlying skin (more prominent in septic or inflammatory bursitis)
- Limited elbow flexion due to skin tightness when the bursa is tense
- Fever and systemic malaise in septic bursitis
- In gout: associated joint pain elsewhere; tophi may be visible
Call us at (301) 515-0900. Same-day appointments available at our Bethesda and Germantown locations.
How we diagnose it
Aspiration with bursal fluid analysis is the key diagnostic procedure whenever infection cannot be excluded:
- Cell count with differential
- Gram stain and culture
- Crystal analysis (polarized microscopy for gout and pseudogout)
- Glucose, protein, and LDH
Blood work: CBC, ESR, CRP, uric acid when inflammatory or septic etiology is suspected.
Plain radiographs rule out olecranon fracture, identify bony irregularities, or show osteomyelitis in severe septic cases.
Treatment options
Surgical Excision of the olecrenon bursa
Surgical excision of the olecranon bursa is reserved for cases that have failed 3 to 6 months of conservative management (including aspiration, compression, padding, and corticosteroid injection) and continue to cause significant pain or functional limitation. The procedure is performed as an outpatient surgery, removing the entire bursal sac through a posterior elbow incision with care taken to achieve meticulous wound closure, as the posterior elbow skin is under tension and wound healing complications are the most common adverse outcome. A compressive dressing and elbow splint are maintained for 2 to 3 weeks postoperatively to minimize dead space and reduce the risk of recurrence or wound dehiscence. Recurrence after complete surgical excision is uncommon, approximately 5 to 10 percent, and outcomes are generally excellent when the procedure is performed for appropriately refractory cases.
Recovery & rehabilitation
Most aseptic bursitis resolves within 4–8 weeks with appropriate conservative management. Septic bursitis clears with a 10–14 day antibiotic course in uncomplicated cases. Recurrence rates after aspiration alone are approximately 30–50%; surgical bursectomy has a lower recurrence rate (< 5%) but carries risks of wound healing problems and scar sensitivity.
Frequently Asked Questions
How do I know if my elbow swelling is infected?
Can I drain it myself?
Will the bursa grow back after surgery?
Should I avoid leaning on my elbow if I have olecranon bursitis?
What is the treatment if my olecranon bursitis is not infected?
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References
- Blackwell JR, Hay BA, Bolt AM, Hay SM. Olecranon bursitis: a systematic overview. Shoulder & Elbow. 2014;6(3):182–190. https://doi.org/10.1177/1758573214532787
- Stell IM. Management of acute bursitis: outcome study of a structured approach. Journal of the Royal Society of Medicine. 1999;92(10):516–521. https://doi.org/10.1177/014107689909201008
- American Academy of Orthopaedic Surgeons. Olecranon (Elbow) Bursitis. OrthoInfo. https://orthoinfo.aaos.org/en/diseases--conditions/olecranon-elbow-bursitis (accessed May 2026).
- Ho G Jr, Tice AD, Kaplan SR. Septic bursitis in the prepatellar and olecranon bursae: an analysis of 25 cases. Annals of Internal Medicine. 1978;89(1):21–27. https://doi.org/10.7326/0003-4819-89-1-21