Dominic Stone
The acronym MM is used in medical contexts to refer to muscles. This abbreviation is used in a variety of medical literature and resources.
Explore related products
What You'll Learn
Manual muscle testing
MMT can be performed on specific joints and movements. For example, distal strength can be measured with a handgrip ergometer or with an inflated BP cuff squeezed by the patient. This records grip strength and requires specialised equipment, most commonly a dynamometer. Dynamometry is a precise measurement of the force a muscle can exert and can record differences in strength over time.
The Oxford Scale (or Medical Research Council Manual Muscle Testing scale) is the most commonly accepted method of evaluating muscle strength. This involves testing key muscles from the upper and lower extremities against the examiner's resistance and grading the patient's strength on a scale from 0 to 5. Commonly tested muscles include the shoulder abductors, elbow flexors, wrist extensors, finger flexors, and hip flexors.
MMT can also be used to assess proximal and distal muscle strength. For example, rising from a chair or stepping onto a chair tests proximal leg strength, while walking on the heels and tiptoes tests distal strength.
In addition to MMT, muscle strength can also be assessed through other methods such as myometry, which can detect changes in strength over time that may not be detected with MMT.
Cardio and Muscle Atrophy: Friend or Foe?
You may want to see also
Explore related products
Neurologic problems
"MM" stands for "muscles" in medical shorthand. Neuromuscular disorders affect the nerves that control voluntary muscles and those that communicate sensory information to the brain. These disorders can cause muscles to weaken and waste away (atrophy). Many neuromuscular disorders are genetic.
There are several types of neuromuscular disorders, including:
- Metabolic myopathies: These are caused by issues with genes that give instructions for enzymes that muscles need. Examples include glycogen storage diseases and lipid storage disorders.
- Mitochondrial myopathies: These occur when there is a defect in muscle mitochondria, the energy-producing part of cells.
- Periodic paralysis: A group of inherited neurological disorders.
To diagnose a neuromuscular disorder, a physician will check a patient's reflexes and muscle strength and evaluate other symptoms. They will also take a medical and family history and perform a general physical and neurological exam. There is currently no cure for neuromuscular disorders, but treatments such as medication, physical therapy, occupational therapy, and surgery can help manage symptoms and delay disease progression.
Fasting for Muscle Health: Does It Work?
You may want to see also
Explore related products
Muscle strength grading
Muscle strength testing is an important component of the physical exam that can reveal information about neurological deficits and help diagnose many problems in which weakness plays a role. It is used to evaluate weakness and can differentiate true weakness from imbalance or poor endurance. It may be referred to as motor testing, muscle strength grading, manual muscle testing, or many other synonyms. The muscle strength evaluation may be performed by nurses, physicians, physical therapists, occupational therapists, chiropractors, and other practitioners.
Muscle strength can be assessed by a number of methods: manually, functionally, or mechanically. The most commonly accepted method of evaluating muscle strength is the Medical Research Council Manual Muscle Testing scale. Another approach to muscle strength testing involves testing functional movements instead of quantifiable strength. Examples of functional tests include squatting or rising from a chair. Functional strength tests provide information about whether the patient is strong enough to perform essential daily activities. However, they do not provide a grade or numeric quantity that can be tracked over time to gauge improvement.
The Oxford Scale is another commonly accepted method that does not require special equipment and demonstrates reasonable inter-rater reliability. More precise methods of measurement, such as hand-grip dynamometry, are less subjective and provide a quantifiable measurement that can be tracked over time. Dynamometry is a more precise measurement of the force that a muscle can exert and can allow for differences in strength to be recorded over time.
The muscles targeted for testing should be methodically chosen based on suspected diagnoses and for a complete characterisation of the strength deficit in various limbs. Commonly tested muscles include the shoulder abductors, elbow flexors, elbow extensors, wrist extensors, finger flexors, hand intrinsics, hip flexors, knee extensors, dorsiflexors, great toe extensors, and plantar flexors. These muscle groups are commonly chosen so that important spinal nerve roots are assessed systematically. For example, testing the strength of the elbow flexors, elbow extensors, wrist extensors, finger flexors, and hand intrinsics allows for a methodical evaluation of the C5 to T1 nerve roots.
The patient's strength is graded on a scale of 0 to 5. If the patient is unable to engage the muscle with gravity eliminated, the examiner should place a hand on the muscle and ask the patient to contract their muscles again. This allows the examiner to feel for a muscle twitch, even if a twitch is not visible. This observation would differentiate a score of 0 from a score of 1. When the patient demonstrates the full range of motion with gravity eliminated, the test should be repeated against gravity for the full range of motion. If this is successful, the patient should be challenged by the addition of a small degree of resistance, then maximal resistance by the examiner.
Activating Muscles: Techniques for Optimum Muscle Activation
You may want to see also
Explore related products
Medical Research Council Manual Muscle Testing
The Medical Research Council (MRC) manual muscle testing is a widely recognised system for evaluating muscle strength. It was introduced by Lovett, an orthopedic surgeon, in the 19th century and has since been used in daily neurological, rehabilitation, and general medicine examinations of patients. The system is based on ordinal scoring of muscle weakness, with grades ranging from 0 (paralysis) to 3 (normal strength). This system has undergone modifications over the years, including a proposal in 2011 to modify it using Rasch analyses, which resulted in a four-option grading system: 0 (paralysis), 1 (severe weakness), 2 (mild weakness), and 3 (normal strength).
The MRC Muscle Scale is licensed under the Open Government Licence, and its drawings illustrating how limb muscles should be tested have likely contributed to its worldwide recognition. The simplicity of the MRC system has made it the most widely used among similar grading systems.
The MRC grading system has been a fundamental tool in the evaluation of muscle strength for decades. Its longevity and widespread adoption can be attributed to its user-friendliness and the visual aids that accompany it. The system's ordinal scoring categories provide a straightforward framework for assessing muscle weakness, making it accessible to medical professionals across various specialties.
Over time, the MRC grading system has undergone modifications to enhance its clinical applicability and address limitations in differentiating between response categories. The proposed four-option grading system aims to improve the system's ability to distinguish between different levels of muscle weakness and provide a more nuanced assessment of a patient's muscle strength.
The MRC manual muscle testing is an essential tool in the field of neuromuscular disorders, providing a standardised approach to evaluating muscle strength. The system's longevity and ongoing refinement demonstrate its significance in medical research and clinical practice, contributing to more accurate diagnoses and effective treatment plans.
Muscle Insulation: Fact or Fiction?
You may want to see also
Explore related products
Hand-grip dynamometry
To perform hand-grip dynamometry, a hand grip dynamometer is used to measure an individual's maximal grip strength. The subject stands for testing and can use either hand. The grip bar is adjusted so that the second joint of the fingers is bent to grip the handle of the dynamometer. The subject holds the dynamometer parallel to their side with their elbow flexed at 90 degrees. It is important to ensure that the dynamometer is set to zero before the test. The subject is then instructed to squeeze the dynamometer as hard as they can without holding their breath, and the grip strength is recorded in kilograms.
The American Society of Hand Therapists recommends that the patient be seated with their shoulder in a neutral position, elbow flexed at 90 degrees, and forearm and wrist in a neutral position during the evaluation. This position is recommended to standardize the measurement process and control variables such as hand dominance and the patient's position, which can influence the variability of the results.
Digital hand grip dynamometers enable the assessment of additional indicators, such as the rate of force development, grip fatigue, fatigability index, and fatigue rate. These indicators can help identify disease-related motor changes and age-related impairments, enhancing the accuracy of referrals and interventions. The dynamometers can also be adjusted to different resistance levels and can measure average grip strength and the number of repetitions, providing a comprehensive evaluation of hand and arm muscle function.
Muscle Glycogen and Sucrose: What's the Connection?
You may want to see also
Frequently asked questions
MM stands for "Muscle (medical)".
You can find more information on the abbreviation by visiting websites such as AcronymFinder.com or Abbreviations.com.
An example of an MM muscle is the bicep, which is located in the upper arm.
Yes, the abbreviation MM may have other meanings depending on the context. For example, it can also stand for "millimetre".
When referencing the use of MM in your work, be sure to follow the appropriate style guide. For example, in APA style, you would format it as: "MM. (n.d.)".
