Ligamentous lesions of the ankle joint are common. Isolated medial ligament injuries are rare but are often associated with lateral ligament injuries, isolated medial ligament lesions are often overlooked. The present study aimed to evaluate the clinical and functional differences in the outcomes of isolated lateral and combined medial and lateral ligament reconstruction. The study is based on patient-reported outcome measurements and motion sensor technology to assess these outcomes. The purpose of this study was to compare the clinical and functional outcomes of isolated lateral and combined lateral and medial ankle ligament reconstruction. From December 2014 to August 2018, 111 patients underwent either isolated lateral ligament (LG) or medial and lateral ligament (MLG) reconstruction. Of the 104 patients meeting the inclusion criteria, 49 had LG and 55 had MLG reconstruction. Outcome measures included the Short Form-36 Health Survey SF-36, Foot and Ankle Outcome Score (FAOS), Foot and Ankle Ability Measure (FAAMG), Tegner Activity Scale, the European Foot and Ankle Society (EFAS), American Orthopaedic Foot and Ancle Society (AOFAS) hindfoot score, and the Karlsson Peterson Score. Mobility and stability were assessed using the Ortheligent™ motion sensor for both healthy and treated ankles. While there were no significant differences in outcome scores between the groups, overall scores improved after treatment (p >0.00). Notably LG showed improved movement, with better dorsal extension measured by the Sensor (p ÷ 0.02). The sensor's results correlated significantly with FAOS subscales for pain (p ÷0.05), stiffness (p ÷ 0.01), ADL (p ÷0.02), and sports (p >0.00). Postoperative results, regardless of LG or MLG, showed significant subjective well-being improvement. LG's advantages were highlighted by a significant improvement in dorsal extension, supported by correlated results from a portable motion sensor assessing ankle stability.
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