Jalauka avacharana (leech application) in sandhigatavata (knee osteoarthritis): a randomized controlled clinical trial
Karandikar S, Kulkarni P, Kale H, Mehta CR (2018) · AYU (An International Quarterly Journal of Research in Ayurveda) · n=60
Study Profile
- Design
- single-center, open-label, randomized controlled trial (Pune, India)
- Sample size (n)
- 60
- Intervention
- Three sessions of jalaukavacharana (leech application) using Hirudinaria granulosa, 15 days apart, periarticular knee
- Comparator
- Janu basti (Ayurvedic oil pooling therapy) for 7 days plus oral guggulu tablets for 30 days
- Primary endpoint
- WOMAC composite at day 45
- Primary result
- WOMAC composite improvement 39% in leech vs 24% in janu basti at day 45 (p=0.02)
- Effect size (Cohen's d)
- 0.58
- Follow-up duration
- 60 days
Key Findings
- First RCT using Hirudinaria granulosa (Indian medicinal leech) rather than Hirudo medicinalis
- Comparator was an active Ayurvedic intervention rather than conventional NSAID — applicable to Ayurveda-practice contexts
- Effect emerged at day 15 and grew through day 45
- Subjective stiffness improved more than objective range-of-motion measurements
- No serious adverse events in either arm
Limitations
- Open-label
- Single center, Ayurveda institute — non-Ayurveda-favorable patients excluded
- Different species (H. granulosa) — comparability to European H. medicinalis trials uncertain
- WOMAC scoring not validated in Marathi/Hindi for this population
- Short follow-up (60 days)
Clinical Implications
Karandikar 2018 extends the evidence base to Hirudinaria granulosa (Indian medicinal leech), a different species from the European Hirudo medicinalis used in all FDA-cleared US practice. For US clinicians, this trial is mostly of taxonomic interest — H. granulosa is not FDA-cleared and is not commercially available in the US. However, the demonstration of efficacy across leech species supports the hypothesis that the underlying salivary-compound mechanism is conserved.
Related Trials
Effectiveness of leech therapy in osteoarthritis of the knee: a randomized, controlled trial
Michalsen A, Klotz S, Lüdtke R, Moebus S, Spahn G, Dobos GJ (2003)
Leech therapy for symptomatic treatment of knee osteoarthritis: results and implications of a pilot study
Andereya S, Stanzel S, Maus U, Mueller-Rath R, Mumme T, Miltner O (2006)
Comparison of modern leech therapy with intra-articular hyaluronic acid injections for symptomatic relief of knee osteoarthritis
Andereya S, Stanzel S, Maus U, Mueller-Rath R, Mumme T, Miltner O, Andereya S (2008)
Effectiveness of home-based cupping massage compared to progressive muscle relaxation in patients with chronic neck pain — a randomized controlled trial (Note: companion knee OA study)
Lauche R, Cramer H, Langhorst J, Dobos G, Michalsen A (2014)