Scoliosis: Surgical Correction of AIS
Scoliosis Journal posted about real time noninvasive assessment of external trunk geometry during surgical correction of adolescent idiopathic scoliosis Authors: Luc Duong, Jean-Marc Mac-Thiong and Hubert Labelle Published: 24 February 2009 Background The correction of trunk deformity is crucial in scoliosis surgery, especially for the patient's self-image. However, direct visualization of external scoliotic trunk deformity during surgical correction is difficult due to the covering draping sheets. Methods An optoelectronic camera system with 10 passive markers is used to track the trunk geometry of 5 scoliotic patients during corrective surgery. The position of 10 anatomical landmarks and 5 trunk indices computed from the position of the passive markers are compared during and after instrumentation of the spine. Results Internal validation of the accuracy of tracking was evaluated at 0.41+/- 0.05 mm RMS. Intra operative tracking during surgical maneuvers shows improvement of the...