Normativne vrednosti anteriorne in mediolateralne rotacijske laksnosti kolenskega sklepa pri zdravih odraslih preiskovancih

Jelen, Matic (author), Vauhnik, Renata (mentor), Kejžar, Nataša (comentor), Weber, Daša (comentor)

Uvod: Ocenjevanje laksnosti kolenskega sklepa, ki je pomemben kazalnik stabilnosti sklepa, ima ključno vlogo pri diagnostiki, spremljanju poteka rehabilitacije in ocenjevanju tveganja za poškodbe. Objektivno ocenjevanje laksnosti z artrometri omogoča natančnejšo in zanesljivejšo oceno v primerjavi z manualnimi testi, vendar je njihova klinična uporabnost omejena zaradi pomanjkanja normativnih vrednosti, zlasti za novejše merilne naprave. Namen: Namen raziskave je bil določiti referenčne intervale za anteriorno in mediolateralno rotacijsko laksnost kolenskega sklepa, izmerjeno z artrometrom DYNEELAX®, pri zdravih odraslih preiskovancih. Poleg tega smo proučili razlike med spoloma, lateralno simetrijo, razlike med zaporednima ocenjevanjema in povezanost med anteriorno ter mediolateralno rotacijsko laksnostjo. Metode dela: V presečno raziskavo je bilo vključenih 112 zdravih odraslih preiskovancev, starih 19–29 let. Laksnost naključno izbranega kolenskega sklepa je bila ocenjena dvakrat zapored v sagitalni in transverzalni ravnini. Anteriorna laksnost je bila ocenjena pri silah 134 N, 150 N in 200 N, mediolateralna rotacijska laksnost pa pri navorih 3 N⋅m in 5 N⋅m. Zbrane podatke smo analizirali z uporabo standardnih statističnih metod. Rezultati: Določeni so bili 50-% in 95-% referenčni intervali za anteriorno in mediolateralno rotacijsko laksnost kolenskega sklepa pri zdravih odraslih preiskovancih, starih 19–29 let. Ženske so imele večjo mediolateralno rotacijsko laksnost kolenskega sklepa kot moški, medtem ko razlike v anteriorni laksnosti med spoloma niso bile statistično značilne. Vrednosti anteriorne laksnosti so bile nižje na desnem kolenskem sklepu kot na levem, razlike v mediolateralni rotacijski laksnosti med stranema pa niso bile statistično značilne. Med prvim in drugim merjenjem prav tako nismo ugotovili statistično značilnih razlik. Anteriorna in mediolateralna rotacijska laksnost sta bili med seboj zanemarljivo do šibko povezani. Razprava in zaključek: Prvič so bili oblikovani referenčni intervali za anteriorno in mediolateralno rotacijsko laksnost na velikem homogenem vzorcu preiskovalcev. V primerjavi s predhodnimi raziskavami so bile ugotovljene vrednosti nižje, kar je verjetno posledica uporabe višjih stabilizacijskih sil in specifičnega protokola. V vzorcu so bile razlike med spoloma v mediolateralni rotacijski laksnosti klinično pomembne, medtem ko razlike med stranema v anteriorni laksnosti niso dosegle kliničnega pomena. V prihodnjih raziskavah bi bilo treba proučiti vpliv spola, strani in dominance spodnjega uda na večjih vzorcih ter določiti referenčne intervale tudi za posteriorno ter valgusno-varusno laksnost in za primarno ter sekundarno skladnost.

• Language: Slovenian
• Keywords: sprednja križna vez, zadnja križna vez, stranske vezi, DYNEELAX®, artrometer
• Work type: Master's thesis/paper
• Organization: ZF - Faculty of Health Sciences
• Year: 2026
• PID: 20.500.12556/RUL-182558
• Publication date in RUL: 16.05.2026

Secondary language

• Language: Unknown
• Title: Normative Values of Anterior and Mediolateral Rotational Knee Joint Laxity in Healthy Adults

Abstract

Introduction: Assessment of knee joint laxity, an important aspect of joint stability, plays a role in diagnosis, rehabilitation monitoring, and evaluation of the risk of injury. Objective assessment of laxity using arthrometers provides more precise and valid measurements than manual tests, but their clinical applicability is limited by the lack of normative values, particularly for newer devices. Purpose: The aim of this study was to establish reference intervals for anterior and mediolateral rotational knee joint laxity, measured using the DYNEELAX® arthrometer, in healthy adult subjects, and to examine sex differences, lateral symmetry, differences between consecutive assessments, and the correlation between anterior and mediolateral rotational laxity. Methods: A cross-sectional study included 112 healthy adults aged 19–29 years. Laxity of a randomly selected knee joint was assessed twice consecutively in the sagittal and transverse planes. Anterior laxity was assessed at forces of 134 N, 150 N and 200 N, while mediolateral rotational laxity was assessed at torques of 3 N⋅m and 5 N⋅m. Data were analysed using standard statistical methods. Results: 50 % and 95 % reference intervals for anterior and mediolateral rotational knee joint laxity were determined in healthy adults aged 19–29 years. Women exhibited greater mediolateral rotational laxity compared to men, whereas differences in anterior laxity between sexes were not statistically significant. Anterior laxity values were lower in the right knee compared to the left, while differences in mediolateral rotational laxity between sides were not statistically significant. No statistically significant differences were observed between the first and second assessments. Anterior and mediolateral rotational laxity were negligibly to weakly correlated. Discussion and conclusion: For the first time, reference intervals for anterior and mediolateral rotational laxity were established in a large homogeneous sample. Compared to previous studies, the values were lower, likely due to higher stabilization forces and the measurement protocol used. In the sample, sex-related differences in mediolateral rotational laxity were clinically relevant, whereas differences between sides in anterior laxity were not clinically relevant. Future studies should investigate the influence of sex, side, and lower-limb dominance in larger samples, as well as determine reference intervals for posterior and valgus-varus laxity and for primary and secondary compliance.

• Keywords: anterior cruciate ligament, posterior cruciate ligament, collateral ligaments, DYNEELAX®, arthrometer