In a case of flexor tenosynovitis, which symptom is least likely to be present?

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In a case of flexor tenosynovitis, the symptoms typically include tenderness over the flexor tendon sheath, swelling of the finger, and pain with passive extension. These signs are directly associated with the inflammation of the tendon sheath and the surrounding structures.

Tenderness over the flexor tendon sheath is a hallmark of this condition, as the inflammation directly affects the tendon and its sheath. Swelling of the finger also aligns with flexor tenosynovitis, as the inflammatory process can lead to increased fluid in the area, resulting in noticeable swelling. Pain with passive extension is particularly significant; it is often referred to as the "passive extension test," where the flexor tendons are put under tension during extension, provoking pain due to the inflammation.

On the other hand, erythema of the flexor surface of the involved digit is less commonly present in flexor tenosynovitis. While some redness might be observed in cases of acute inflammation, it is not a consistent or distinguishing feature of the condition compared to the other symptoms listed. The absence of significant erythema is what makes this symptom the least likely to be present in typical cases of flexor tenosynovitis.

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