Outcomes of strengthening approaches in the treatment of low-grade spondylolisthesis

Abstract

Background: Historically, spondylolisthesis has been treated by a wide variety of techniques such as flexion exercises, bracing, abdominal stabilizing programs, general strengthening, stretching, and in some cases, motor control exercises. Although surgical treatment of spondylolisthesis has been outlined in current literature, strengthening programs have not been well defined for this population.

Objective: To describe the outcomes in randomized clinical or controlled trials (RCTs) in which either a global or local strengthening approach was assessed against another comparator in conservative treatment of patients with a low-grade spondylolisthesis.

Methods: A systematic review of the literature. This review was formatted using the PRISMA guidelines, a 27-item checklist and four-phase flow diagram. An electronic search strategy targeting randomized controlled and clinical trials that compared conservative treatments for low-grade (I and II) spondylolisthesis that used a local stabilization approach, motor control, and/or a general strengthening program versus a surgical intervention or a control group was used. Physiotherapy Evidence Database (PEDro) was used to critically appraise each study for quality. Outcome measures included changes in pain measured by the visual analog scale (VAS) along with secondary measures of functional disability, working status, and lumbar range of motion.

Results: Although 28 studies went through full text review, only three studies met inclusion criteria. Within the studies, global strengthening exercise programs significantly decreased subjects’ pain as measured using the VAS but did not significantly improve the level of disability. In contrast, local stabilization or motor control exercises demonstrated improvements in both pain and disability. No studies directly compared a global strengthening approach versus a stabilization approach.

Conclusion: Our findings indicate that both exercise training programs of local strengthening/stabilization interventions, as well as general strengthening programs may be beneficial as conservative strengthening management to patients with a low-grade spondylolisthesis. A direct comparison of these approaches is needed for the spondylolisthesis population.

Keywords:

• Conservative treatment
• Strengthening
• Stabilization
• Spondylolisthesis