Mulligan Concept in the Treatment of Ankle Sprains

Aim of the study is to establish the efficiency of the mulligan concept vs a sham group (who will also serve as control). Patient with an subacute ankle sprains will be assess following the mulligan concept and then randomized in two groups: Mobilization with movement (MWM) group and Sham group. MWM group will receive 3 sets of 10 repetitions of treatment (i.e. passive accessory glide during an active dorsiflexion) while the sham treatment will do 3 sets of 10 active dorsiflexion with the hand of the Physiotherapist only apply on the skin. 3 sessions with 4 days apart will take place. outcomes will be measure before and after every sessions.

All included subject will received the Mulligan concept assessment. First investigator will applied non-weight bearing inferior tibiofibular mobilization with movement (MWM), i.e. passive accessory glide in a posterior and superior direction on the inferior tibiofibular joint. If not painful, Weightbearing inferior tibiofibular MWM will be applied 6 times. it consist on applying a passive accessory glide on the subject while he/she is doing an active dorsiflexion of the injured ankle. Dorsiflexion range of motion, pain and function will be reassess. If either one of previously cited outcomes is improve, subject is considered respondents. If he/she feels any pain or no improvements at all, he/she will be considered non-respondents. If non-weight-bearing inferior tibiofibular MWM is painful, talocrural MWM will be apply, first in non-weightbearing and if painfree, in weight bearing position. Talocrural MWM consist on a posterior glide of the talus while the subject realized an active dorsiflexion of the injured ankle. Same outcomes as previsouly cited will be assess and will determine if the patient is respondent or non-respondent. If the subject is non-respondent of the talocrural MWM or if he/she felt any pain during the talocrural MWM, a non weightbearing cubometatarsal MWM, i.e. cranio-caudal glide of the lateral cubometatarsal joint during an active dorsiflexion of the injured ankle, will be applied. If painfree, a tape will be placed as to replicate the cubometatarsal MWM, and the patient will reassess ROM, pain and function with the tape to see whether he/she is a respondent or non respondent subject. If the subject is non-respondent to neither of the three MWM, he/she is considered a drop-out. Respondent patient will then be randomized into two groups: MWM group and Sham group. MWM group will receive 3 sessions with 4 days apart of 3 sets of 10 repetitions of preferential MWM (inferior tibiofibular, talocrural, cubometatarsal) while the sham group will receive 3 sessions with 4 days apart of 3 sets of 10 repetitions with the first investigator doing a light touch during an active dorsiflexion, mimicking the real MWM techniques. Outcomes will be measures at T0 (beginning of the treatment-beginning of the first session), T1 (end of the first session), T2 (beginning of the second session), T3 (end of the second session), T4 (beginning of the third session) and T5 (end of the treatment-end of the third session).

Eligibility Criteria:
Inclusion Criteria:

* ankle sprain since 2 weeks to 12 weeks
* Grade 1 or 2 ankle sprain
* Asymetrical dorsi-flexion limitation

Exclusion Criteria:

* Acute or Grade 3 ankle sprain
* More than 12 weeks ankle sprain
* Any other trauma of the lower limb