DENVER — Patients who underwent medial patellofemoral ligament reconstruction with either allograft or autograft had low risks of repeat dislocation and had similar rates of recurrent subjective instability, according to results presented here.
“Redislocation after isolated [medial patellofemoral ligament] MPFL reconstruction with allograft or autograft tissue is rare and not significantly different between the graft types,” Scott Shemory, MD, said in his presentation, which was awarded the Patellofemoral Surgical Anatomy Research Excellence Award at the Arthroscopic Association of North America Annual Meeting. “Recurrent subjective instability occurs more frequently for reconstructions done both with allograft and autograft and is also not significantly different between the graft types.”
Shemory and colleagues obtained information regarding current dislocation and subjective instability in 53 of 117 patients who underwent isolated MPFL reconstruction. Of these patients, 37 received an allograft and 16 patients received an autograft. A subset of 33 patients were interviewed and completed patient-reported outcomes.
While he noted no significant differences in patient demographics, redislocation or subjective instability between the allograft and autograft groups, Shemory said patients in the allograft group had a significantly better patellar instability score in the patient-reported outcome subset. Results showed patients in the allograft group had significantly higher KOOS pain, symptom, activities of daily living and quality of life scores.
“The overall rate of redislocation after MPFL reconstruction in this study was low, just under 2%, and similar to previously published rates,” Shemory said. “There was no significant difference found in this study in redislocation after isolated MPFL reconstruction; however, there were significantly higher scores found in multiple patient-reported outcomes in the allograft group.” – by Casey Tingle
Shemory S, et al. Paper #SS-22. Presented at: Arthroscopy Association of North America Annual Meeting; May 18-20, 2017; Denver.
Disclosure: Shemory reports no relevant financial disclosures.