Although HTO for the correction of malalignment in the medial osteoarthritic knee has been shown to provide successful outcomes in some studies, it is technically difficult to achieve the ideal valgus position postoperatively, and the likelihood of postoperative complications after HTO is greater than that after UKA . As compared with HTO, UKA has been reported to provide better long-term results, to have a shorter time to full weight bearing, to allow easier rehabilitation, and to have fewer perioperative complications. Furthermore, indications for UKA are broadening, including younger and more active patients, since encouraging midterm and long-term results were published.
Valgus high tibial osteotomy (HTO) and unicompartmental knee arthroplasty (UKA) are established treatment options for patients with medial compartmental osteoarthritis (OA) of the knee.However, the clinical outcomes of these treatment modalities for unicompartmental OA have become subjects of debate.