Abstract
Few studies have identified the effects of arthroscopic surgery on the clinical outcomes
when open wedge high tibial osteotomy (OWHTO) and arthroscopic surgery were performed
together. The purpose of this study was to evaluate the clinical efficacy of arthroscopic
surgery in patients who had varus osteoarthritic knee and were treated with OWHTO
combined with arthroscopic surgery. Among the 98 knees (88 patients) who underwent
OWHTO between January 2008 and March 2013, 79 knees (71 patients) with more than 2
years of follow-up were reviewed retrospectively. The patients were divided into two
groups: Group 1 (24 knees) underwent only OWHTO and Group 2 (55 knees) underwent OWHTO
combined with arthroscopic surgery. For clinical evaluation, the range of motion (ROM),
pain visual analog scale, Knee Society knee score, Knee Society function score, and
complication were used. For radiologic evaluation, Kellgren–Lawrence grade, mechanical
femorotibial angle, and posterior tibial slope were used. The average follow-up period
was 29.1 months. Group 2 showed a significant increase in the ROM at the last follow-up
(133.2 ± 6.0 degrees) compared with the preoperative time point (128.3 ± 7.7 degrees)
(p < 0.001). In the comparison of radiologic parameters between Groups 1 and 2, there
was no significant difference. In the minimum 24-month follow-up, when OWHTO combined
with arthroscopic surgery was performed, arthroscopic surgery helped increase the
ROM of patients with mechanical symptoms. However, the amount of the ROM increase
of 4.9 degrees was of unknown clinical significance.
Keywords
open wedge high tibial osteotomy - arthroscopic surgery - clinical efficacy - clinical
outcome - radiologic parameters
