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Table 1 Surgical procedures and postoperative data

From: Treatment of scoliosis in patients affected with Prader-Willi syndrome using various techniques

  First surgery year Age at first surgery Surgery description Surgery duration Blood losses during surgery Hospital stay after surgery Preop Cobb angle of primary scoliosis Postop Cobb angle of primary scoliosis Correction rate
B.S.F. 1998 14 yrs T4-L4 posterior arthrodesis using hybrid instrumentation with sublaminar wires, hooks and a couple of distally-inserted pedicle screws 3 hrs 1000 ml 10 days 79° 15° 81%
M.S. 1998 10 yrs T2-L2 posterior arthrodesis using hybrid instrumentation: proximally-inserted hooks and a couple of distally-inserted screws in L1 and L2, as well as 2 DTTs 4 hrs 3000 ml 17 days 65° Instrumentation removal -
C.F. 2005 12 yrs T4-L4 posterior arthrodesis using only titanium pedicle screw instrumentation 6 hrs 1500 ml 9 days 95° 33° 65%
P.L. 2006 11 yrs T3-L4 growing rod instrumentation using only titanium pedicle screws; final fusion after 18 months 5 hrs 2000 ml 10 days 96° 32° 63%
E.H.J. 2007 15 yrs T3-L2 posterior arthrodesis using only titanium pedicle screw instrumentation 6 hrs 1000 ml 10 days 75° 35° 53%
O.M. 2007 15 yrs T5-L3 posterior arthrodesis using only titanium pedicle screw instrumentation 6 hrs 2000 ml 10 days 80° 50° 38%