[Retrospective study of therapy of periprosthetic femoral supracondylar fractures after total knee arthroplasty with open reduction and less invasive stabilization system (LISS) internal fixation].

OBJECTIVE

To investigate the clinical results of therapy of periprosthetic femoral supracondylar fractures after total knee arthroplasty (TKA) with open reduction and internal fixation (ORIF) using less invasive stabilization system (LISS).

METHODS

Eight cases of periprosthetic femoral supracondylar fractures after TKA were treated with ORIF using distal femoral LISS in our department. They had full follow-up for 3 to 39 months. Their knee functions were evaluated through radiological and clinical checkups and functional evaluations by HSS (The Hospital for Special Surgery) scoring system and Lysholm Questionnaire.

RESULTS

None of the fractured patients had any infection or internal-fixation failure. The average knee motion range was 0-94°. There was no statistic difference of the femorotibial angle between pre- and postoperation. At the end of the last follow-up, the average HSS score was 79.38 and Lysholm score 80.25. All the average scores were good and excellent.

CONCLUSION

ORIF with LISS is a one of the valuable treatments for periprosthetic femoral supracondylar fractures after TKA.