Millon’s test is used for detection of –
**Core Concept**
Millon's test is a clinical examination technique used to assess the presence of a specific condition related to the musculoskeletal system. It involves the application of a gentle, sustained pressure to a particular area, causing the patient to experience pain or discomfort. This test is primarily used to detect abnormalities in the lumbar spine, particularly in the sacroiliac joints.
**Why the Correct Answer is Right**
Millon's test relies on the principle of joint dysfunction, where the sacroiliac joint becomes inflamed or irritated, leading to pain and stiffness. The test involves applying pressure to the iliac crest, which is the curved ridge of bone at the top of the pelvis. When the sacroiliac joint is inflamed, it can cause referred pain to the lower back, glutes, or even the legs. The mechanism behind Millon's test involves the activation of pain receptors in the sacroiliac joint, which transmit signals to the brain, indicating the presence of an underlying condition.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because Millon's test is not used for detecting conditions related to the shoulder or upper limb. The test is specifically designed to assess the sacroiliac joint.
* **Option B:** This option is incorrect because the FABER test (Flexion, Abduction, and External Rotation) is a different clinical examination technique used to assess the sacroiliac joint, but it involves a different set of movements and is not the same as Millon's test.
* **Option C:** This option is incorrect because the Gaenslen's test is another clinical examination technique used to assess the sacroiliac joint, but it involves a different set of movements and is not the same as Millon's test.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that Millon's test should be performed with caution, as it can cause pain and discomfort in patients with underlying sacroiliac joint dysfunction. A thorough history and physical examination are necessary to determine the presence of a sacroiliac joint disorder before performing this test.
**Correct Answer: C.**