Trendelenburg’s test positive in all EXCEPT:
**Core Concept**
Trendelenburg's test is a clinical examination used to assess the competency of the saphenofemoral junction and the integrity of the great saphenous vein. It involves measuring the time it takes for the swelling in the ankle to decrease after compression of the saphenofemoral junction. A positive result indicates incompetence of the saphenofemoral junction.
**Why the Correct Answer is Right**
A positive Trendelenburg's test is indicative of saphenofemoral junction incompetence, which occurs when the valve between the great saphenous vein and the common femoral vein is damaged or absent. This leads to reflux of blood from the deep to the superficial system, resulting in varicose veins. The test is performed by compressing the saphenofemoral junction, and then releasing it. Normally, the swelling in the ankle should decrease rapidly. However, if the junction is incompetent, the swelling will persist or worsen.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided.
**Option B:** This option is not provided.
**Option C:** This option is not provided.
**Option D:** This option is not provided.
**Clinical Pearl / High-Yield Fact**
Trendelenburg's test is a useful clinical tool for diagnosing saphenofemoral junction incompetence, but it can be influenced by factors such as muscle tone, body habitus, and the presence of other venous insufficiencies.
**Correct Answer: Not Provided**