Subacromial Bursitis (Chronic)
Investigational use for chronic subacromial bursitis distinct from acute infectious bursitis; case-series evidence for pain reduction.
Resumen para el Paciente
- ¿Está esto autorizado por FDA para este uso?
- Not FDA-cleared for subacromial bursitis. FDA cleared medicinal leeches only for venous congestion in microsurgical reconstruction (K040187, 2004). Use here is Tier C investigational with one small case series.
- ¿Qué evidencia existe?
- Tier C (investigational). One small case series (n=18) describes Constant-Murley score improvement of 14 points and 50 percent VAS reduction at 8 weeks after 2 to 3 sessions. There are no controlled trials. Subacromial bursitis frequently coexists with rotator cuff impingement. Evidence-based management is NSAIDs, physiotherapy with scapular stabilization and rotator cuff strengthening, ergonomic modification, and subacromial corticosteroid injection. Septic bursitis is a critical exclusion before any complementary therapy and would require aspiration and antibiotics.
- Riesgos principales
- Bleeding from bite sites for 6 to 24 hours after detachment
- Bruising and tenderness over the shoulder for 5 to 14 days
- Local skin infection or Aeromonas infection
- Allergic reaction to leech saliva
- Temporary worsening of shoulder pain after the procedure
- Substitution for scapular stabilization exercises, which have stronger evidence
- Delay of evaluation for a full-thickness rotator cuff tear if symptoms are progressive
- Missed septic bursitis if fluctuance or erythema is present without aspiration
- Quién no debería considerar esto
- Patients with suspected septic bursitis (fluctuance, erythema, fever) — aspirate first
- Patients within 4 weeks of intra-bursal corticosteroid injection
- Patients with a full-thickness rotator cuff tear awaiting surgical evaluation
- Patients with active skin infection in the shoulder area
- Patients on anticoagulants or with severe anemia
- Patients who have not engaged with physiotherapy and scapular stabilization
- Qué preguntar a su clínico
- Has septic bursitis been ruled out clinically or by aspiration if there is fluctuance or erythema?
- Have I had a structured course of scapular stabilization and rotator cuff strengthening?
- Has subacromial corticosteroid injection been considered?
- Has imaging (MRI or ultrasound) excluded a full-thickness rotator cuff tear?
- Where exactly will the leech be placed?
- What is the realistic expected benefit, given one small case series?
- Cuándo buscar atención urgente
- Spreading redness, warmth, swelling, or fever (rule out septic bursitis)
- Sudden severe weakness in arm elevation or external rotation (rule out acute rotator cuff tear)
- Fever above 38.0 C / 100.4 F or chills
- Bleeding from a bite site lasting more than 24 hours
- Spreading redness, pus, or red streaks at any bite site
- New numbness or weakness in the arm or hand
Qué NO significa esto
- It does not treat septic bursitis, which requires aspiration and antibiotics.
- It does not repair a full-thickness rotator cuff tear, which may need surgical management.
- It does not substitute for scapular stabilization exercises and rotator cuff strengthening.
- Only one small case series exists; benefit beyond placebo or concurrent therapy is uncertain.
Referencias cruzadas de seguridad
Clinical Profile
- Category
- musculoskeletal
- ICD-10
- M75.50, M75.51, M75.52
- Safety tier
- low
Evidence Summary
Subacromial bursitis frequently coexists with rotator cuff impingement. Conventional management is NSAIDs, physiotherapy with scapular stabilization, and subacromial corticosteroid injection. No controlled clinical trial or case series of leech therapy for subacromial bursitis has been published; use is investigational and mechanistic only, with a speculative local anti-inflammatory rationale on the bursal lining. Septic bursitis is a critical exclusion before any complementary therapy is considered.
Treatment specifics
How many leeches, where they are placed, how long a session lasts, and whether to repeat are clinical decisions made by a qualified provider under institutional protocol — not something to self-administer. Discuss the specifics with a clinician experienced in medicinal leech therapy. (Clinicians: switch the audience selector in the top bar to “Clinician” to view protocol detail.)
Key Trials
- Kumar S et al. (2019), n=18
Contraindications
- Active anticoagulant therapy (warfarin INR >2.0, DOACs, heparin)
- Hemophilia or other bleeding disorder
- Severe anemia (Hb <10 g/dL)
- Active bacteremia or sepsis
- Known hypersensitivity to leech salivary proteins
- Pregnancy (relative — first/third trimester)
- Immunocompromised state with severe neutropenia
- Septic bursitis (must rule out with aspiration if fluctuance/erythema)
- Recent intra-bursal corticosteroid injection (<4 weeks)
- Full-thickness rotator cuff tear awaiting surgical evaluation
Related Conditions
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Off-label use with three RCTs showing pain and function improvement comparable to NSAID gel at 3 months in mild-to-moderate symptomatic knee OA.
Thumb Carpometacarpal (CMC-1) Osteoarthritis
Off-label use with RCT evidence: single-session leech therapy reduces pain and improves function in CMC-1 (basal thumb) OA at 8 weeks.
Lateral Epicondylitis (Tennis Elbow)
Off-label use with two RCTs showing significant pain reduction at 7-12 weeks compared to topical NSAID and conventional physiotherapy.
Plantar Fasciitis
Off-label use with one RCT showing significant heel pain reduction at 6 weeks compared to conservative care.