Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Spine Patient Outcomes Research Trial (SPORT): A Multicenter Randomized Trial for Degenerative Spondylolisthesis (DS) With Spinal Stenosis (SpS) at L4/L5 Level.
Brief Summary: This study tests the effectiveness of different treatments for the three most commonly diagnosed conditions of the lower backbone (lumbar spine). The purpose is to learn which of two commonly prescribed treatments (surgery and nonsurgical therapy) works better for specific types of low back pain.

In this part of the study, we will treat patients with spinal stenosis (a narrowing of spaces in the backbone that results in pressure on the spinal cord and/or nerve roots) caused by degenerative spondylolisthesis (a condition in which one vertebra, or spinal bone, slips forward on another) with either surgery or nonsurgical methods. This study does not cover the cost of treatment.


Options:
A: Arm Label: Surgery; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Decompressive laminectomy, Other: Non-surgical treatments, Procedure: Fusion--Instrumented, Procedure: Fusion-Non-instrumented | Arm Label: Non-surgical intervention; Type: ACTIVE_COMPARATOR; Interventions: Other: Non-surgical treatments | Intervention Type: PROCEDURE; Name: Decompressive laminectomy; Assigned to Arm(s): Surgery | Intervention Type: OTHER; Name: Non-surgical treatments; Assigned to Arm(s): Non-surgical intervention, Surgery | Intervention Type: PROCEDURE; Name: Fusion--Instrumented; Assigned to Arm(s): Surgery | Intervention Type: PROCEDURE; Name: Fusion-Non-instrumented; Assigned to Arm(s): Surgery
B: Arm Label: 1; Type: EXPERIMENTAL; Interventions: Procedure: Surgical decompression | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Procedure: Physical therapy | Intervention Type: PROCEDURE; Name: Surgical decompression; Assigned to Arm(s): 1 | Intervention Type: PROCEDURE; Name: Physical therapy; Assigned to Arm(s): 2
C: Arm Label: Surgery; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Decompressive laminectomy, Other: Non-surgical treatments | Arm Label: Non-surgical treatments; Type: ACTIVE_COMPARATOR; Interventions: Other: Non-surgical treatments | Intervention Type: PROCEDURE; Name: Decompressive laminectomy; Assigned to Arm(s): Surgery | Intervention Type: OTHER; Name: Non-surgical treatments; Assigned to Arm(s): Non-surgical treatments, Surgery
D: Arm Label: Posterolateral Fusion w/Pedicle Screws; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Decompression, Device: Posterolateral Fusion and Implantation of Pedicle Screws | Arm Label: coflex Interlaminar Technolgy; Type: ACTIVE_COMPARATOR; Interventions: Procedure: Decompression, Device: Implantation of coflex Interlaminar Technology | Intervention Type: PROCEDURE; Name: Decompression; Assigned to Arm(s): Posterolateral Fusion w/Pedicle Screws, coflex Interlaminar Technolgy | Intervention Type: DEVICE; Name: Posterolateral Fusion and Implantation of Pedicle Screws; Assigned to Arm(s): Posterolateral Fusion w/Pedicle Screws | Intervention Type: DEVICE; Name: Implantation of coflex Interlaminar Technology; Assigned to Arm(s): coflex Interlaminar Technolgy

Answer: A