Cross Cultural Validation of the Italian Version of the Bt-DUX

Cross Cultural Validation of the Italian Version of the Bt-DUX: A Subjective Measure of Health Related Quality of Life in Patients Who Underwent Surgery for Lower Extremity Malignant Bone Tumour

The purpose of the presented study is to translate the English Bt-DUX (Bt-DUX-Eng) questionnaire into the Italian language and then examine the validity of the Italian version of the Bt-DUX (Bt-DUX-It).

Validation of the Italian Bt-DUX:

Cross sectional study among patients of the Istituto Ortopedico Rizzoli, Bologna, Italy, will carry out. All patients who underwent a surgical intervention due to a malignant bone tumour in the leg will be identified through hospital records and a survey consisting of different QoL questionnaires will be executed:

Bt-DUX, EORTC QLQ C-30, The Toronto Extremity Salvage Score (TESS).

Inclusion Criteria:

• Patients are eligible if they're aged between 15 and 25 years at the time of the selection, if the time since surgery is ranged between 12 and 60 months, if the malignant bone tumour (osteosarcoma or Ewing's sarcoma) was located around the hip or the knee and the surgical intervention consisted of limb sparing or ablative surgery.

Exclusion Criteria:

• Patients will be excluded if other medical conditions limit their physical activities.