What does Semmes Weinstein monofilament test measure?

What does Semmes Weinstein monofilament test measure?

Semmes–Weinstein monofilaments are a semi-quantitative test of sensory loss. The idea, developed by Josephine Semmes and Sidney Weinstein, was to measure touch-pressure in a standardized way by controlling the force of an applied stimulus to the skin [1].

How do I record a monofilament test?

Use a 3 step sequence that includes (1) touch the skin, (2) bend the filament, and (3) lift from the skin (See Figures 1-3). Do not use rapid movement. The approach, skin contact, and departure of the filament should be approximately 1½ seconds duration. 4) Ask the patient to respond “yes” when the filament is felt.

How do you test hand sensation?

For the ability to sense a sharp object, the best screening test uses a safety pin or other sharp object to lightly prick the face, torso, and 4 limbs; the patient is asked whether the pinprick feels the same on both sides and whether the sensation is dull or sharp.

What is impaired protective sensation?

Neuropathy often presents with a loss of protective sensation, defined as a level of sensory deficit, where a patient can sustain an injury without recognizing any inciting trauma.

How do von Frey filaments work?

Von Frey filaments rely on the principle that an elastic column, in compression, will buckle elastically at a specific force, dependent on the length, diameter and modulus of the material. Once buckled, the force imparted by the column is fairly constant, irrespective of the degree of buckling.

Why is monofilament test done?

Monofilament examination is used to assess high risk foot for diabetes foot ulcers. It is to assess pressure sensation perception. It is reliable in screening for patients at risk of foot ulceration because sensitivity is a more important parameter [1].

What is the role of Semmes Weinstein monofilament testing in the diagnosis of Electrophysiologically graded carpal tunnel syndrome?

Data of the first three digits were averaged to reveal the mean strength value of the monofilaments for each hand. [Results] The criteria of 2.83-conventional method yielded a sensitivity of 98% and a specificity of 17% in the diagnosis of carpal tunnel syndrome.

How do you document monofilament findings?

If reusing the monofilament, label the monofilament with the client’s name and the date. Monofilaments can be used for repeat testing as single patient use only. 1. If all sites are tested and the client feels the monofilament in each of the areas; then the score is 10/10.

What is the Semmes Weinstein test?

While physicians may use many quantitative methods to detect peripheral neuropathy, the Semmes Weinstein monofilament examination (SWME) is a noninvasive, low-cost, rapid, and easy-to-apply test often used in clinical testing and routine self assessment.

How to perform monofilament testing?

Use the 10gm monofilament to test sensation. Have patient close his or her eyes. Apply the filament perpendicular to the skin’s surface. Be aware that the approach, skin contact and departure of the monofilament should be approximately 1.5 seconds in duration. Apply sufficient force to allow the filament to bend. (Figure 1).

What is a positive monofilament test?

Monofilament test is a gold standard test. The monofilament test strand made of nylon is used to touch the base of the effected limb, if the patient feel pain on touching the monofilament, then the patient condition can be recovered with medications and some strict preventions.