Objective To investigate the etiology,clinical characteristics,and therapeutic approaches of ankle-derived hallux tendon sheath cysts based on the clinical and anatomical findings from four cases of ankle-derived hallux tendon sheath cysts,in conjunction with a review of relevant literature.Methods The diagnosis of ankle-derived hallux tendon sheath cysts in all four cases was confirmed through clinical symptoms,physical signs,imaging studies,and intraoperative angiography.The treatment involved the excision of the hallux tendon sheath cysts combined with ankle joint capsule repair.Analysis and summary were conducted in light of the related literature.Results In this study,three patients experienced favorable healing,timely suture removal,and functional exercises post-surgery.One patient encountered the infection at the plantar incision site,which resolved after 14 days of diligent wound care.Follow-up periods ranged from 3 to 13 months(average 7.5 months),with no recurrences up to the time of manuscript submission.The outcomes,as indicated by AOFAS and VAS scores,were excellent.Conclusions The hypothesis proposed regarding the etiology of ankle-derived hallux tendon sheath cysts,based on the analysis of four cases from this study and eighteen cases from other literature,provides a plausible explanation for the clinical features of this condition.Accurate diagnosis before and during surgery is crucial for selecting the appropriate surgical strategy.
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