RT Journal Article
T1 Morton’s Extension on Hallux Rigidus Pathology
A1 Sánchez Gómez, Rubén
A1 López-Alcorocho Sánchez, Juan Manuel
A1 Nuñez Fernández, Almudena
A1 González Fernandez, Maria Luz
A1 Martinez Sebastian, Carlos
A1 Ortuño Soriano, Ismael
A1 Zaragoza García, Ignacio
A1 Gómez Carrión, Álvaro
AB 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.
PB MDPI
SN 2673-1592
YR 2023
FD 2023-02-21
LK https://hdl.handle.net/20.500.14352/73314
UL https://hdl.handle.net/20.500.14352/73314
LA eng
DS Docta Complutense
RD 9 abr 2025