Reliability and MDC of the weight-bearing lunge test (WBLT)
Decreased ankle dorsiflexion range of motion (DROM) is a risk factor for sustaining lower extremity injuries.A growing acceptance of weight-bearing DROM measurements has promoted the development of several versions of the WBLT The WBLT involves a patient standing in tandem stance and performing a forward lunge. The involved foot is planted on the ground as the tibia is progressed over the talus into maximum dorsiflexion.
A variety of measurement techniques quantify ROM: such as the distance from toe to wall, traditional goniometry or degrees of tibial inclination. The two most common positions use a tandem stance where one position involves measurement of the front ankle as the knee is flexed , while the other involves measurement of the rear ankle while the knee is in full extension .
The review demonstrates strong evidence for good inter- and intra-clinician reliability of the WBLT to assess DROM and may therefore be incorparated in clinically assessing DROM MDC changes of 4.6 degrees or 1.6 cm and intra-clinician changes of 4.7 degrees or 1.9 cm should be used within clinical practice to determine when changes in DROM.
> From: Powden et al., Manual Therapy (2015) (Epub ahead of print). All rights reserved to Elsevier Ltd. Click here for the Pubmed summary.