Infectious Tenosynovitis with 3 or More Kanavel Signs When Closed Flexor Tendon Sheath Irrigation Has Not Resolved the Infection

This protocol addresses the clinical decision point reached when a patient with moderate to severe digit infection and three or more Kanavel signs of flexor tendon sheath involvement has undergone initial surgical irrigation — and infection clearance has not been achieved.

Applicable scenario: Three or more Kanavel signs of flexor tendon sheath infection are present, with moderate to severe digit infection symptoms. Advanced, necrotic, and chronic forms of flexor tendon sheath infection have been excluded.

Previous treatment did not achieve the goal

Initial management with closed catheter irrigation and debridement of the flexor tendon sheath (including pulley release, catheter-based irrigation, and a course of intravenous followed by oral antibiotics) was performed. The target outcome — resolution of the flexor tendon sheath infection — was not achieved within the expected timeframe, prompting escalation to this protocol.

Next Surgical Step — Partial Overview

This protocol involves operative re-intervention targeting the flexor tendon sheath — with the specific technique determined by whether the initial exposure was sufficient. The complete sequence, indications for each approach, and intraoperative criteria are detailed in the full protocol.

Treatment Goals

Resolution of flexor tendon sheath infection Clearance of purulent fluid from the sheath

Instant Access to Structured Evidence-Based Regimens

References

DOI: 10.1055/s-0039-1700370

In cases of advanced or delayed presentation, three or more Kanavel signs, and/or failure to respond to antibiotics after 24 to 48 hours, surgery is indicated.

Repeat operative irrigation can be performed 2 days later, if necessary.

If the exposure or the extent of irrigation is too limited to adequately clear the infection, the entire marked incision can be opened to connect the initial two incisions.

The flexor sheath is then repeatedly irrigated with antibiotic-impregnated irrigation, until satisfied that the purulent fluid has been cleared away.

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