Your browser doesn't support javascript.
loading
Inverse kinematic total knee arthroplasty using conventional instrumentation restores constitutional coronal alignment.
Keyes, Sarah; Russell, Shane P; Bertalan, Zsolt; Harty, James A.
Afiliación
  • Keyes S; South Infirmary Victoria University Hospital, Cork, Ireland.
  • Russell SP; Bon Secours Hospital Cork, Cork, Ireland.
  • Bertalan Z; Department of Orthopaedic Surgery, University College Cork, Cork, Ireland.
  • Harty JA; Royal College of Surgeons in Ireland, Dublin, Ireland.
Knee Surg Sports Traumatol Arthrosc ; 2024 Jun 03.
Article en En | MEDLINE | ID: mdl-38829243
ABSTRACT

PURPOSE:

Restricted inverse kinematic alignment (iKA) is a contemporary alignment strategy for total knee arthroplasty (TKA), commonly performed with robotic assistance. While superior clinical results are reported for kinematic-type alignment strategies, registry data indicate no survivorship benefit for navigation or robotic assistance. This study aimed to determine the efficacy of an instrumented, restricted iKA technique for achieving patient-specific alignment.

METHODS:

Seventy-nine patients undergoing 84 TKAs (five bilateral procedures) using an iKA technique were included for preoperative and postoperative lower limb alignment analysis. The mean age was 66.5 (range 43-82) with 33 male and 51 female patients. Artificial intelligence was employed for radiographic measurements. Alignment profiles were classified using the Coronal Plane Alignment of the Knee (CPAK) system. Preoperative and postoperative alignment profiles were compared with subanalyses for preoperative valgus, neutral and varus profiles.

RESULTS:

The mean joint-line convergence angle (JLCA) reduced from 2.5° to -0.1° postoperatively. The mean lateral distal femoral angle (LDFA) remained unchanged postoperatively, while the mean medial proximal tibial angle (MPTA) increased by 2.5° (p = 0.001). By preservation of the LDFA and restoration of the MPTA, the mean hip knee ankle angle (HKA) moved through 3.5° varus to 1.2° valgus. The CPAK system was used to visually depict changes in alignment profiles for preoperative valgus, neutral and varus knees; with 63% of patients observing an interval change in classification.

CONCLUSION:

Encouraged by the latest evidence supporting both conventional instrumentation and kinematic-type TKA strategies, this study describes how a restricted, conventionally instrumented iKA technique may be utilised to restore constitutional lower limb alignment. LEVEL OF EVIDENCE Level III.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Knee Surg Sports Traumatol Arthrosc Asunto de la revista: MEDICINA ESPORTIVA / TRAUMATOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Irlanda Pais de publicación: Alemania
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Knee Surg Sports Traumatol Arthrosc Asunto de la revista: MEDICINA ESPORTIVA / TRAUMATOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Irlanda Pais de publicación: Alemania