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Dynamic Chiropractic – August 15, 2006, Vol. 24, Issue 17
Dynamic Chiropractic
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Dynamic Chiropractic

Treatment of the Distal Fibular for Lateral Ankle Sprains

By Warren Hammer, MS, DC, DABCO

Mulligan1 believes the most significant lesion in a lateral ankle inversion sprain is due to the distal fibula getting "wrenched forward on the tibia," creating a positional fault.

He feels that the lateral ligamentous damage is "usually insignificantly damaged." A recent article in the Journal of Orthopaedic & Sports Physical Therapy confirms his findings.2 The authors of the study compared 30 patients who had no history of ankle sprain with 30 patients who had chronic ankle instability (CAI). The authors concluded that "the fibula was positioned significantly more anterior in relation to the tibia in subjects with unilateral CAI. It is unclear if repetitive bouts of ankle instability image - Copyright – Stock Photo / Register Mark caused the anterior fibular position or if the more anterior position was a predisposing factor to injury." Mavi, et al., used MRI to measure and also found the fibula positioned more anteriorly in an injured group.3 Other studies have found the fibula to be posterior positioned in acute ankle sprains; but Hubbard, et al., argue that the other measurements compared the fibular position to the talus rather than to the tibia.2

I recently used the Mulligan procedure for an acute lateral ankle sprain with excellent results. The patient had a typical inversion plantar flexion sprain with moderate swelling on the lateral side. Mulligan recommends immediate repositioning of the fibulal.1 You can first test the area to see if repositioning will help. With your left thenar eminence on the patient's right foot, put your other hand around the Achilles' tendon to stabilize the distal leg, and then use a posterior/superior force on the distal lateral malleolus (Figure 1)

image - Copyright – Stock Photo / Register Mark Hold this contact and notice if active inversion by the patient is relieved. If there is not marked relief, change the angle of your glide to reach the least painful motion during the active patient inversion. Taping is next, and after 48 hours, this test motion can be used with Mulligan's "mobilization with movement" method, in which the practitioner glides the lateral malleolus posterior/superior while the patient actively moves the foot into inversion/plantar flexion without pain. At the end of the inversion/plantar flexion, the patient or practitioner can contact the foot and use overpressure in inversion while the practitioner holds the contact.

Apply 2-inch-wide tape while the foot is in a neutral position anterior to the distal fibula with the tip of the distal fibula exposed below the tape's edge (Figure 2). Tape in the posterior/superior direction and maintain the posterior/superior pressure while the tape is pulled around the distal leg. Make sure the tapes do not meet, as space may be needed for possible swelling. While not shown, it is a good idea to reinforce the taping with a second strip. The tape may be changed every 48 hours.

References

  1. Mulligan BR. Manual Therapy "NAGS," "SNAGS," "MWMSs," etc., 5th edition. Wellington, New Zealand: Plane View Services, LTD; 2004.
  2. Hubbard TJ, Hertel J, Sherbondy P. Fibular position in individuals with self-reported chronic ankle instability. J Orthop Sports Phys Ther 2006;36(1):3-9.
  3. Mavi A, et al. The fibula incisura of the tibia with recurrent sprained ankle on magnetic resonance imaging. Saudi Med J 2002;23:845-849.

Click here for more information about Warren Hammer, MS, DC, DABCO.

Dynamic Chiropractic

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