Standardizing Joint-Line determination on anteroposterior knee radiographs: multicenter validation of the adductor ratio and a novel composite index in 3000 knees - Takeaways - MDSpire

Standardizing Joint-Line determination on anteroposterior knee radiographs: multicenter validation of the adductor ratio and a novel composite index in 3000 knees

  • By

  • Serhat Akcaalan

  • Ismail Duran

  • Mahmut Ugurlu

  • Salahulddin Abuljadail

  • Lina AlMudayris

  • Antonio Russo

  • Mattia Forgini

  • Moez Zeiton

  • Alexander Yan

  • Felipo Forero

  • Elliot Patarroyo

  • María Belén López Villagra

  • Ana Laura Bogado

  • Julius G. Pallera

  • Dexter R. Ramos

  • Daniela Seidel

  • Jorge Izquierdo

  • Kushal Hippalgaonkar

  • Niranjan Ghag

  • Gunes Ates

  • Mustafa Fatih Dasci

  • Mustafa Citak

  • February 2, 2026

  • 0 min

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  • 1

    The study involved 3000 knee radiographs from ten countries to assess joint line measurements after knee arthroplasty.

  • 2

    A joint line shift of 5 mm can lead to instability, while changes over 2 mm can worsen clinical outcomes.

  • 3

    Different anatomical landmarks are used for joint line measurements, but no universally accepted method exists.

  • 4

    The study aimed to define a new joint line index less influenced by age, gender, and regional variables.

  • 5

    Composite indices were developed to improve joint line estimation and reduce demographic dependency in measurements.

Original Source(s)

Standardizing Joint-Line determination on anteroposterior knee radiographs: multicenter validation of the adductor ratio and a novel composite index in 3000 knees

  • by Serhat Akcaalan, Ismail Duran, Mahmut Ugurlu, Salahulddin Abuljadail, Lina AlMudayris, Antonio Russo, Mattia Forgini, Moez Zeiton, Alexander Yan, Felipo Forero, Elliot Patarroyo, María Belén López Villagra, Ana Laura Bogado, Julius G. Pallera, Dexter R. Ramos, Daniela Seidel, Jorge Izquierdo, Kushal Hippalgaonkar, Niranjan Ghag, Gunes Ates, Mustafa Fatih Dasci, Mustafa Citak

  • February 2, 2026

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