Hindfoot Endoscopy: Correlation of the Preoperative Indications with the Perioperative Endoscopic Findings

Background: The aim of this study was to review the disorders treated with hindfoot endoscopy and investigate the detected ratio and type of combined pathologies. The second aim was to evaluate the preoperative and peroperative findings before and at the time of hindfoot endoscopy. Patients and Methods: 81 hindfoot endoscopies of the 77 patients performed between 2010-2015 were reviewed. Demographic informations, preoperative physical and radiological findings and operative data of all patients were noted. Preoperative physical examination for hindfoot was performed in a standart fashion for all patients. Weight-bearing anteroposterior and lateral radiographs were taken for all patients. Magnetic resonance imaging(MRI) was performed to all patients except obvious prescence of bony impingement. The hindfoot endoscopy was performed to all patients at prone position under either spinal or general anesthesia with standart posteromedial and posterolateral portals described as Van Dijk et al. Results: In this case series; the most detected preoperative indications were flexor hallucis longus tendinopathy(27.1%), symptomatic os trigonum(22.2%) as a cause of posterior ankle impingement and insertional achilles tendinopathy(20.9%). The most detected endoscopic findings were flexor hallucis longus tendinopathy(33.3%), symptomatic os trigonum(19.3%), and retrocalcaneal bursitis(16.2%).16 patients(19.7%) had preoperatively detected combined pathologies. In 32 patients(39.5%), a new indication was added to preoperative indication. Conclusion: Posterior ankle impingement and peri-achilles pathologies are the most seen indications for this technique. It is important that we all must aware of perioperatively detected new indications and rare conditions