Fig. 2　Surgical exposure using the direct medial approach to the right knee（continued）

（A）The surgical epicondylar axis（blue line）and the Whiteside line（green line）in knee flexion.（B）The vastus medialis obliquus muscle（*）and the synovial flap（†）before closure.（C）The synovial flap is pulled up.（D）Reconstruction of the medial capsule with the synovial flap. Observe the complete covering of the vastus medialis muscle sheath.