Reply to comments on Farr et al.: “Clinical experience with arthroscopically-assisted repair of peripheral triangular fibrocartilage complex tears in adolescents—technique and results”

Farr, Sebastian; Girsch, Werner

doi:10.1007/s00264-015-2820-9

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…These add more structure to the waveforms. Some studies have shown how the inclusion of precession can improve measurements of the mass ratio and the spin of the larger black hole [39][40][41][42], although there are still indications that it is only the spin of the larger black hole that can be measured with any reasonable accuracy [13,43]. To date no studies have explicitly considered our ability to measure individual spins, or have considered the effects of merger and ringdown.…”

Section: Discussionmentioning

confidence: 99%

Can we measure individual black-hole spins from gravitational-wave observations?

2016

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Measurements of black-hole spins from gravitational-wave observations of black-hole binaries with groundbased detectors are expected to be hampered by partial degeneracies in the gravitational-wave phasing: between the two component spins, and between the spins and the binary's mass ratio, at least for signals that are dominated by the binary's inspiral. Through the merger and ringdown, however, a different set of degeneracies apply. This suggests the possibility that, if the inspiral, merger and ringdown are all within the sensitive frequency band of a detector, we may be able to break these degeneracies and more accurately measure both spins. In this work we investigate our ability to measure individual spins for non-precessing binaries, for a range of configurations and signal strengths, and conclude that in general the spin of the larger black hole will be measurable (at best) with observations from Advanced LIGO and Virgo. This implies that in many applications waveform models parameterized by only one effective spin will be sufficient. Our work does not consider precessing binaries or sub-dominant harmonics, although we provide some arguments why we expect that these will not qualitatively change our conclusions. LIGO-P1500255

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Section: Discussionmentioning

confidence: 99%

Can we measure individual black-hole spins from gravitational-wave observations?

2016

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“…Solving the PN equations of motion analytically is challenging, especially when the orbits are eccentric or the bodies are spinning. While solving the PN equations numerically is far less intensive than solving the full Einstein equations, it can add days or weeks to Bayesian parameter estimation studies [13,14]. Moreover, since most analyses are performed in the frequency domain, we seek closed form solutions that can be computed directly in frequency.…”

mentioning

confidence: 99%

Analytic Gravitational Waveforms for Generic Precessing Binary Inspirals

et al. 2017

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Binary systems of two compact objects circularize and spiral toward each other via the emission of gravitational waves. The coupling of the spins of each object with the orbital angular momentum causes the orbital plane to precess, which leads to modulation of the gravitational wave signal. Until now, generating frequency-domain waveforms for fully precessing systems for use in gravitational wave data analysis meant numerically integrating the equations of motion, then Fourier transforming the result, which is very computationally intensive for systems that complete hundreds or thousands of cycles in the sensitive band of a detector. Previously, analytic solutions were only available for certain special cases or for simplified models. Here we describe the construction of closed-form, frequency-domain waveforms for fully precessing, quasicircular binary inspirals.

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Editorial Commentary: The Hook Test Is More Accurate for Detecting Foveal Triangular Fibrocartilage Complex Tears but Not More Important Than the Trampoline Test

Farr¹

2021

Arthroscopy: The Journal of Arthroscopic & Related Surgery

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Wrist arthroscopy is a successful tool to diagnose and treat several intra-articular wrist pathologies. To assess the stability and integrity of the triangular fibrocartilage complex (TFCC), the most commonly injured structure in the ulnocarpal compartment, the trampoline and hook tests are frequently used in daily practice. However, their arthroscopic performance measures have not been well elucidated to date. While the hook test may primarily be seen as a sensitive tool to detect foveal TFCC tears, the trampoline test is of equal importance for the clinician because it can detect frequently occurring superficial (distal) tears in the peripheral TFCC area. As opposed to the hook test, however, the trampoline test might more easily lead to interrater disagreement since the rebound after probing is rather a continuum than a binary measure and might be related to a different severity of peripheral TFCC disruption. The combination of both tests should thus be pursued since they complement each other very well. Proper interpretation of the tests needs sufficient experience and should be done in concordance with the clinical evaluation (ie, fovea sign, distal radioulnar joint ballottement test). Hence, the hook test may be more accurate to detect foveal TFCC tears but all together not more important than the trampoline test to establish the correct diagnosis. For once, Captain Hook has won!

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Reply to comments on Farr et al.: “Clinical experience with arthroscopically-assisted repair of peripheral triangular fibrocartilage complex tears in adolescents—technique and results”

Cited by 3 publications

References 3 publications

Can we measure individual black-hole spins from gravitational-wave observations?

Can we measure individual black-hole spins from gravitational-wave observations?

Analytic Gravitational Waveforms for Generic Precessing Binary Inspirals

Editorial Commentary: The Hook Test Is More Accurate for Detecting Foveal Triangular Fibrocartilage Complex Tears but Not More Important Than the Trampoline Test

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