Effects of isokinetic and proprioceptive training after lateral ankle ligament reconstruction: A case report

Introduction: Lateral ankle ligament reconstruction (LALR) is fundamental to avoid instability and the risk of osteoarthritis. After surgery, deficits in muscular strength and the proprioceptive system lead to functional changes. This study aimed to investigate if proprioceptive and isokinetic training can be incorporated to manage a professional soccer player after LALR. Method: A 25-year-old professional soccer player, who injured his right ankle while playing, participated in the study. An MRI revealed partial rupture of the anterior talofibular ligament and associated fracture of the posterolateral distal fibular. Three months after the reconstruction surgery, the participant performed 20 sessions of isokinetic training along with 10 proprioceptive exercises. Outcomes were isokinetic inversion and eversion variables in concentric mode at 60, 120, and 240°/s (during the isokinetic phase – sustained velocity), postural sway (assessed in single-limb stance, using a force platform), and physical function (Foot and Ankle Ability Measure (FAAM) and the Lower Extremity Functional Scale (LEFS)). Results: Post-treatment, the sustained velocity increased by ∼6% and decreased by 3% in the other isokinetic phases in inversion and eversion. At 60°/s, the Peak Torque/Body Mass for the evertor muscle was 30% higher post-treatment. Center of Pressure (CoP) data with eyes open showed a decrease for anteroposterior dispersions and displacement. The FAAM (sports sub-section) and LEFS increased by 15.6 and 9 points, respectively. Conclusion: Isokinetic and proprioceptive training improved postural control parameters, physical function, and inversion and eversion isokinetic variables in a professional soccer player after lateral ligament reconstruction.