Responsiveness of isokinetic dynamometry in patients with osteoarthritis after knee and hip arthroplasty

ǂa ǂprospective repeated-measures cohort study

Ferdinand Prüfer (Avtor), Monika Pavlović (Avtor), Špela Matko (Avtor), Stefan Loefler (Avtor), Michael J. Fischer (Avtor), Nejc Šarabon (Avtor), Vincent Grote (Avtor)

Povzetek

Functional assessments are crucial for the evaluation of rehabilitation after total knee (TKA) and hip (THA) arthroplasty. Muscle strength, a key determinant of physical function (PF), is often measured with isokinetic dynamometry (ID), which is considered the gold standard. However, studies lack evaluations of responsiveness—the ability to detect changes over time. This study aims to determine the responsiveness of ID in measuring PF in TKA and THA rehabilitation—is muscle strength a valid indicator for assessing improvement in rehabilitation processes? The pre- and post-surgery PF of 20 osteoarthritis patients (age 55–82) was assessed, using ID, performance-based and self-reported measures. Responsiveness was evaluated by comparing the observed relationship of changes in ID and PF scores with the a priori defined expected relationship of change scores. While the performance-based and self-reported measures showed significant improvements post-surgery (Cohen’s d [0.42, 1.05] p < 0.05), ID showed no significant differences. Moderate correlations were found between changes in some ID parameters and selected functional tests (r ≈|0.5|, p < 0.05). Responsiveness was solely found for the peak torque of knee extension at 180°/s on the operated side. Responsiveness is an often-overlooked psychometric property of outcome measurements. The findings suggest that ID may not be fully responsive to the construct of PF after TKA and THA, raising questions about its role and usefulness in this context and the need for more appropriate assessment methods.

Ključne besede

arthroplasty;replacement hip;replacement knee;muscle strength;physical functional performance;rehabilitation;responsiveness;

Podatki

Jezik:	Angleški jezik
Leto izida:	2024
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UP FVZ - Fakulteta za vede o zdravju
UDK:	615.82/.84:617.3
COBISS:	183481347
ISSN:	2227-9032
Št. ogledov:	205
Št. prenosov:	11
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	artroplastika;zamenjava kolka;zamenjava kolena;mišična moč;fizična funkcionalna zmogljivost;rehabilitacija;odzivnost;
Vrsta dela (COBISS):	Članek v reviji
Strani:	18 str.
Letnik:	ǂVol. ǂ12
Zvezek:	ǂissue ǂ3, [article no.] 314
Čas izdaje:	Jan. 2024
DOI:	10.3390/healthcare12030314
ID:	22778488