Fig. 4

Intraoperative views of the modified marionette technique. a The looped 1-0 nylons working as pivots were pierced through the chest wall (white arrow heads). The 1-0 nylons attached to the IOR were drawn out separately form the access port (black arrow heads). b When the left nylon attached to the IOR was pulled, the IOR retracted the lung upward toward the left-side looped nylon. White arrows indicate the direction of traction. c When the right nylon attached to the IOR was pulled, the IOR retracted the lung upward toward the right-side looped nylon