BACKGROUND: The purpose of this investigation was to evaluate the relationship between the severity of functional and mechanical ankle instability in physically active individuals. MATERIALS AND METHODS: Eighty college aged physically active individuals from a large university were recruited for this study. All subjects had unilateral functional ankle instability (FAI). FAI was defined as a history of at least two ankle sprains and a score less than or equal to 27 on the Cumberland Ankle Instability Tool (CAIT). The contralateral limb had no history of ankle injury or instability. Anterior displacement (mm) and talar tilt (degrees) were measured using the LigMaster joint arthrometer to identify mechanical ankle instability(MAI). Individuals were tested bilaterally and the maximum value attained during talar tilt and anterior displacement was used for statistical analysis. RESULTS: First we evaluated side-to-side differences in MAI in all subjects. We found no significant difference between the FAI and the non-FAI ankle for anterior displacement (t(1.79)=1.66, p = 0.10) or talar tilt (t(1.79)=-0.07, p=0.95). Secondly, we evaluated the relationship between the FAI and MAI measures and found no significant correlations between the severity of FAI and magnitude of anterior displacement(r=0.18, p=0.12) or talar tilt (r=0.09, p=0.42). CONCLUSION: This study demonstrated there was no side-to-side difference in MAI in individuals with unilateral functional ankle instability. Similarly, we also conclude there was no significant relationship between the severity of FAI and MAI. We feel that these findings suggest the symptoms of FAI may not be related to ankle joint laxity, but instead due to other factors associated with FAI.
BACKGROUND: The purpose of this investigation was to evaluate the relationship between the severity of functional and mechanical ankle instability in physically active individuals. MATERIALS AND METHODS: Eighty college aged physically active individuals from a large university were recruited for this study. All subjects had unilateral functional ankle instability (FAI). FAI was defined as a history of at least two ankle sprains and a score less than or equal to 27 on the Cumberland Ankle Instability Tool (CAIT). The contralateral limb had no history of ankle injury or instability. Anterior displacement (mm) and talar tilt (degrees) were measured using the LigMaster joint arthrometer to identify mechanical ankle instability(MAI). Individuals were tested bilaterally and the maximum value attained during talar tilt and anterior displacement was used for statistical analysis. RESULTS: First we evaluated side-to-side differences in MAI in all subjects. We found no significant difference between the FAI and the non-FAI ankle for anterior displacement (t(1.79)=1.66, p = 0.10) or talar tilt (t(1.79)=-0.07, p=0.95). Secondly, we evaluated the relationship between the FAI and MAI measures and found no significant correlations between the severity of FAI and magnitude of anterior displacement(r=0.18, p=0.12) or talar tilt (r=0.09, p=0.42). CONCLUSION: This study demonstrated there was no side-to-side difference in MAI in individuals with unilateral functional ankle instability. Similarly, we also conclude there was no significant relationship between the severity of FAI and MAI. We feel that these findings suggest the symptoms of FAI may not be related to ankle joint laxity, but instead due to other factors associated with FAI.
Authors: Kaori Tsutsumi; Utayo Nakaya; Yuta Koshino; Mari Tateno; Kazuhisa Matsumoto; Mai Tanaka; Mika Yokoyama; Tatsunori Horie; Mina Samukawa; Tamotsu Kamishima; Harukazu Tohyama Journal: Int J Environ Res Public Health Date: 2022-02-18 Impact factor: 3.390
Authors: Jin Hyuck Lee; Soon Hyuck Lee; Gi Won Choi; Hae Woon Jung; Woo Young Jang Journal: Knee Surg Sports Traumatol Arthrosc Date: 2018-10-05 Impact factor: 4.342
Authors: Phillip A Gribble; Eamonn Delahunt; Christopher M Bleakley; Brian Caulfield; Carrie L Docherty; Daniel Tik-Pui Fong; François Fourchet; Jay Hertel; Claire E Hiller; Thomas W Kaminski; Patrick O McKeon; Kathryn M Refshauge; Philip van der Wees; William Vicenzino; Erik A Wikstrom Journal: J Athl Train Date: 2013-12-30 Impact factor: 2.860
Authors: Ellen Kemler; Ingrid van de Port; Sandor Schmikli; Bionka Huisstede; Arno Hoes; Frank Backx Journal: J Foot Ankle Res Date: 2015-04-14 Impact factor: 2.303
Authors: Renato Andrade; Rogério Pereira; Ana Leal; Bruno Pereira; João Paulo Vilas Boas; C Niek van Dijk; João Espregueira-Mendes Journal: Porto Biomed J Date: 2021-02-11