ObjectiveTo compare the clinical efficacy of total arthroscopic surgery with arthroscopic debridement combined with posterior open resection for popliteal fossa cyst. MethodsSixty patients with popliteal fossa cyst were selected and randomly assigned to two groups, with 30 cases in each group. Total arthroscopic surgery via double posteromedial approach was employed in the observation group, whereas arthroscopic debridement combined with posterior open resection was conducted to the control group. Clinical indices, pre- and postoperative VAS scores, knee joint function Lysholm scores, the incidence of complications, and the recurrence states half year after surgery were compared between both groups. ResultsThe observation group exhibited shorter operation duration and incision length, and less bleeding volume as compared with the control group (all P＜0.05). Both groups demonstrated lower VAS scores but higher Lysholm scores after surgery than before surgery, and the observation group yielded a lower VAS score but a higher Lysholm score after surgery in comparison of the control group (all P＜0.05). Half year after surgery, two cases reoccurred cyst in the control group, whereas no reoccurred cases in the observation group was found, with no statistically significant difference between both groups (P＞0.05). No complication like neurovascular injury, infection and synarthrophysis etc. occurred in both groups. ConclusionBoth techniques, i.e. total arthroscopic surgery via double posteromedial approach or arthroscopic debridement combined with posterior open resection, can well treat popliteal fossa cyst; however, total arthroscopic surgery via double posteromedial approach has more significantly therapeutic effects, and it has small surgical incision, short operation duration, minor intraoperative bleeding volume, and rapid postoperative recovery, and thus it is more worthwhile for clinical promotion at present.

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