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The investigators collected retrospective data of severe (>80o) and rigid scoliosis patients who underwent preoperative traction before correction surgery from 2016 to 2018. The first group consisted of patients who underwent Cotrel traction exercises and second group underwent continuous-progressively increasing Skull Tongs Femoral Traction (STFT) traction. Posterior fusion was performed in all patients. Intraoperative parameters (blood loss, operation time and level instrumented) and radiologic change (initial, post-traction and postoperative Cobb Angle) was evaluated and analyzed
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Skull tong femoral traction |
| ||
| Cotrell longitudinal traction |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Preoperative traction | Procedure | Compare two methods of preoperative traction (Cotrel traction exercises and skull tongs femoral traction) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Radiologic change | Preoperative, post traction and postoperative xray | - Baseline - Immediately after 2 weeks of preoperative traction - immediately after the correction surgery |
| Measure | Description | Time Frame |
|---|---|---|
| Blood loss | The amount of blood loss during the correction surgery | Intraoperative |
| Duration of surgery | The time required to perform the correction surgery |
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Inclusion Criteria:
Exclusion Criteria:
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severe (>80o) and rigid scoliosis patients who underwent preoperative traction before correction surgery from 2016 to 2018
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| Intraoperative |
| Number of instrumented levels | the number of vertebrae instrumented during the correction surgery | Intraoperative |