Range Of Motion
Range Of Motion - Related Videos
00:59
Range
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2023
The range is one of the measures of variation. It can be defined as the difference between a dataset's highest and lowest values. For example, in the study of seven 16-ounce soda cans, the filled volume of soda was measured, thus producing the following amount (in ounces) of soda: 15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5 Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
11:41
Kinematics and Projectile Motion
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2023
Source: Ketron Mitchell-Wynne, PhD, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA This experiment demonstrates the kinematics of motion in 1 and 2 dimensions. This lab will begin by studying motion in 1 dimension, under constant acceleration, by launching a projectile directly upward and measuring the maximum height reached. This lab will verify that the maximum height reached is consistent with the kinematic...
10:12
Newton's Laws of Motion
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2023
Source: Andrew Duffy, PhD, Department of Physics, Boston University, Boston, MA This experiment examines at various situations involving two interacting objects. First, the experiment examines the forces that two objects apply to one another while they collide. The objects are wheeled carts that have variable masses. The purpose of this experiment is to discover when the force the first cart exerts on the other is the same magnitude as the force the second cart exerts back on the first, as well...
06:03
Motion-induced Blindness
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University One thing becomes very salient after basic exposure to the science of visual perception and sensation: what people see is a creation of the brain. As a result people may fail to see things, see things that are not there, or see things in a distorted way. To distinguish between physical reality and what people perceive, scientists use the term awareness to refer to what people perceive. To study awareness, vision scientists often...
01:27
¹H NMR: Long-Range Coupling
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2024
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling. In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene π orbitals.
FAQs
The relationship between active and passive measurements helps narrow the likely source of movement loss. A patient may move less actively because of pain or weakness, while a larger passive limitation can point toward stiffness or soft-tissue restriction. Comparing both measurements therefore adds clinical meaning beyond recording a single joint angle.
These factors influence measurements in different ways. Pain may limit a patient’s willingness or ability to move, weakness can reduce movement generated by the patient’s muscles, and stiffness or soft-tissue restriction may limit motion even when an external force is applied. Recognizing these influences helps practitioners interpret restricted movement rather than treating every reduction as equivalent.
Different movement directions reveal different aspects of joint function, so clinicians record flexion, extension, rotation, and other applicable motions as separate measurements. Quantifying each direction with an angle provides a more detailed functional profile than relying on a general impression of mobility. This detail supports clearer comparisons during diagnosis, rehabilitation, and follow-up.
A goniometer provides an objective way to quantify the angle reached during a joint movement. Instead of describing mobility only as better or worse, the practitioner can document a measured value for active or passive motion. Those values create a consistent basis for evaluating functional change and judging whether treatment or rehabilitation is producing improvement.
The assessment distinguishes movement produced by the patient’s own muscles from movement achieved through an external force. The practitioner evaluates relevant directions such as flexion, extension, or rotation, then uses a goniometer or another measurement tool to quantify the resulting angles. Recording these values establishes objective findings for clinical interpretation and planning.
Clinicians can use these measurements during diagnosis, rehabilitation planning, treatment evaluation, and recovery monitoring. They are particularly relevant after injury or surgery and when disease affects movement. Repeated measurements provide objective evidence of functional change, helping practitioners determine whether a patient’s mobility is improving, remaining limited, or changing during care.
Comparing measurements over time reveals changes in the angles achieved during specific joint movements. Improvement in active or passive values can document functional progress, while persistent restrictions may show that limitations remain. Because the measurements are tied to defined motions, they give treatment teams objective evidence for evaluating rehabilitation and adjusting clinical decisions.
Together, the two measurement types describe both patient-generated movement and movement available when an external force is used. This comparison can help characterize limitations associated with pain, weakness, stiffness, or soft-tissue restriction during recovery. Documenting the findings after injury or surgery supports diagnosis, rehabilitation planning, and objective monitoring of functional change.