We have static tests such as the Supination Resistance Test and Jack's test and I just wanted to share a test that I used. I am sure this is not a new test but I always called it the Hallux Distraction Test (HDT) since the 1980s. The HDT determines the degree of passive reducibility due to the degree of flexibility/stiffness in the transverse plane between the first and second metatarsal heads.
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The test is performed by loading the MTJ, distracting the hallux to eliminate the retrograde pressure of the base of the proximal phalanx against the first metatarsal head (reverse buckling). You then apply a laterally directed force against the medial aspect of the head of the first metatarsal to passively reduce the IM angle.
The HDT helps provide information regarding the level of stiffness in the Transverse plane between the first and second metatarsals to determine laxity of the first metatarsal cuneiform joint and if the sesmoids can be relocated plantar to the first metatarsal head. A positive HDT would mean first metatarsal abduction stiffness would be low and the first IM angle would be passively reduced with minimal force.
The HDT test is also performed intra-op after the appropriate lateral release is performed to see if abduction stiffness of the first metatarsal is reduced.
For me, I always found the HDT test useful for surgical planning and to select the procedures with the least amount of risks and complications and still receive the most optimum and long term results.
Steven
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