Fig. 1From: Healing period after open high tibial osteotomy and related factors: Can we really say that it is long? a A spacer is prepared to achieve the correction angle, and an OSferion is formed in the same shape as the spacer. b The cut tibia is opened with the spacer, and its condition is checked using fluoroscopy. c The spacer in the opening space is substituted by the same-shaped OSferion and is fixed with a TomoFix plateBack to article page