Correlation Analysis Of Arthroscopy And MRI Assisted Selection Of Surgical Procedure Of Osteochondral Lesions Of The Talus

Objective:To summarize and analyze the correlation of MRI and arthroscopy assisted arthroscopy assisted selection of surgical procedure of OLT.Methods:The retrospective study included 22 patients with OLT confirmed between August 2010 and July 2013 at a single institute. There were 14 males and 8 females, with average age of 37.6 years (range 26 to 52 years). Every patient had only one foot injury, the numbers of left foot injury were 7 patients and the right injuries were 15 patients. The numbers of inner side injury were 17 patients and the lateral injuries were 5 patients.18 cases of all cases had the clear history of trauma. All patients took both MRI and arthroscopic examination routinely before surgery, and MRI Hepple’ staging and arthroscopic Bohndorf’s staging were evaluated respectively. Moreover, the ankle-hindfoot scores of American Orthopaedic Foot and Ankle Society(AOFAS)were calculated respectively before and after surgery.Results:According to MRI Hepple’s staging, there were 1,9,4,2 and 6 cases from stage I to V respectively. Meanwhile, there existed 1,1,2,14,2, and 2 patients with stage A to F respectively based on arthroscopic Bohndorf’s staging. There was no significant relation between the MRI and arthroscopic evaluation (r=0.26, P=0.24).19 of those patients received a median follow-up of 15.7 months (range:1-35 months), and the follow-up rate was 86.4%. Before operation, the ankle-hindfoot score was 42.16 ± 10.23, while at the end of followup, the score was significantly increased, which was 82.84 ±13.03 (P<0.01).Conclusion:MRI combined with arthroscopic examination could improve the diagnosis of OLT and better the selection of surgical procedure. The results of surgical treatment for OLT were satisfactory.