%0 Journal Article
%A Sánchez Gómez, Rubén
%A López-Alcorocho Sánchez, Juan Manuel
%A Nuñez Fernández, Almudena
%A González Fernandez, Maria Luz
%A Martinez Sebastian, Carlos
%A Ortuño Soriano, Ismael
%A Zaragoza García, Ignacio
%A Gómez Carrión, Álvaro
%T Morton’s Extension on Hallux Rigidus Pathology
%D 2023
%@ 2673-1592
%U https://hdl.handle.net/20.500.14352/73314
%X Study design, case-control study: Background, Morton’s extension (ME) is a kind of orthoticthat has been used as a conservative treatment of painful hallux rigidus (HR) osteoarthritis, but onlytheir effects on first metatarsophalangeal joint (MPJ) mobility and position in healthy subjects havebeen studied, but not on its applied pulled tension forces neither in subjects with HR. Objectives:This study sought to understand how ME’s orthotics with three different thicknesses could influencethe kinematic first MPJ by measuring hallux dorsiflexion using Jack’s test and a digital algometerwith a rigid strip anchored to the iron hook’s extremity and comparing subjects with healthy firstMPJ mobility to those with HR.We aimed to clarify whether tension values were different betweenhealthy and HR subjects. Methods: Fifty-eight subjects were selected, of whom thirty were includedin the case group according to HR criteria and twenty-eight were included in the control group. Adigital algometer (FPX®® 25,Wagner Instruments®®, Greenwich, CT, USA) was used to assess thepulled tension values (kgf) of the first MPJ during Jack’s test. Results: The pulled tension values werehighly reliable (ICC > 0.963). There were no statistically significant differences between the pulledtension values for the different ME conditions in the case (p = 0.969) or control (p = 0.718) groups.However, as it’s expected, there were statistically significant differences comparing all pulled tensionvalues between case and control group subjects (p < 0.001). Conclusions: Different ME’s thicknesseshad no influence on the pulled effort applied during the dorsiflexion Jack’s test between the healthyand HR groups; therefore, it can be prescribed without joint-care danger. In addition, it is proventhat there is greater resistance to performing Jack’s test in the HR group than in the healthy group,regardless of ME’s orthotics. Furthermore, it is shown that the digital algometer device is a valid toolto detect the first MPJ restriction and is more reliable than other tests.
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