Evaluation of functional stability in patients after total knee arthroplasty: bi-cruciate stabilised versus cruciate retaining implants - a preliminary comparative study
ESSKA Academy. Bialy M. 11/08/19; 284372; epEKA-32 Topic: Joint Replacement
Maciej Bialy
Maciej Bialy
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Evaluation of functional stability in patients after total knee arthroplasty: bi-cruciate stabilised versus cruciate retaining implants - a preliminary comparative study

ePoster - epEKA-32

Topic: TKA

Bialy M.1,2, Dec J.3, Pierzchala A.3
1Sport-Klinika, Endoscopic Surgery Clinic, Functional Diagnosis Laboratory, Żory, Poland, 2The Jerzy Kukuczka Academy of Physical Education, Motion Analysis Laboratory, Knee Research Group, Katowice, Poland, 3Sport-Klinika, Endoscopic Surgery Clinic, Department of Orthopaedic Surgery, Żory, Poland

Introduction: Total knee arthroplasty (TKA) is a successful treatment for degenerative knee osteoarthritis. The development of new implant designs does not only focus on pain relief, but also aims to improve knee function after TKA.
Objective/Aim: The aim of this study was to evaluate early functional stability outcomes between two different types of prosthesis in patients after TKA.
Methods: Prospective collected data from patients who underwent Bi-cruciate Stabilised Knee (JII BCS) (n=9) and Conventional Cruciate Retaining (GII CR) (n=9) TKA were gathered 3-4 months after surgery. Range of motion was measured actively. For functional stability of the operated extremity, anterior tibia translation was measured using an electromechanical arthrometer, while a balance platform was used to measure single leg stance performance. The WOMAC questionnaire was used for assessing subjective functional outcomes. Subjects signed their written informed consent and the rights of participants were protected. Differences between JII BCS and GII CR group of all measured variables for operated extremities were compared using a non-parametric Mann Whitney U test. The Alpha level was set at 0.05.
Results: Both groups showed significant differences (p< 0.05) in stability measurements. The arthrometry result showed a difference between operated and non-operated extremity in the JII BCS group of -0.2mm, while for the GII CR group this was 2.3mm. The single leg balance test showed an overall stability index of 2.7° for the JII BCS group, while this was 4.6° for the GII CR group. Both AROM and WOMAC scores were better for the JII BCS group, as compared with the GII CR data.
Conclusions: Replacing the function of the anterior and posterior cruciate ligaments with a bi-cruciate stabilised implant can result in better functional stability outcomes in the early postoperative phase, as compared with conventional cruciate retaining prosthesis in patients after TKA.
Evaluation of functional stability in patients after total knee arthroplasty: bi-cruciate stabilised versus cruciate retaining implants - a preliminary comparative study

ePoster - epEKA-32

Topic: TKA

Bialy M.1,2, Dec J.3, Pierzchala A.3
1Sport-Klinika, Endoscopic Surgery Clinic, Functional Diagnosis Laboratory, Żory, Poland, 2The Jerzy Kukuczka Academy of Physical Education, Motion Analysis Laboratory, Knee Research Group, Katowice, Poland, 3Sport-Klinika, Endoscopic Surgery Clinic, Department of Orthopaedic Surgery, Żory, Poland

Introduction: Total knee arthroplasty (TKA) is a successful treatment for degenerative knee osteoarthritis. The development of new implant designs does not only focus on pain relief, but also aims to improve knee function after TKA.
Objective/Aim: The aim of this study was to evaluate early functional stability outcomes between two different types of prosthesis in patients after TKA.
Methods: Prospective collected data from patients who underwent Bi-cruciate Stabilised Knee (JII BCS) (n=9) and Conventional Cruciate Retaining (GII CR) (n=9) TKA were gathered 3-4 months after surgery. Range of motion was measured actively. For functional stability of the operated extremity, anterior tibia translation was measured using an electromechanical arthrometer, while a balance platform was used to measure single leg stance performance. The WOMAC questionnaire was used for assessing subjective functional outcomes. Subjects signed their written informed consent and the rights of participants were protected. Differences between JII BCS and GII CR group of all measured variables for operated extremities were compared using a non-parametric Mann Whitney U test. The Alpha level was set at 0.05.
Results: Both groups showed significant differences (p< 0.05) in stability measurements. The arthrometry result showed a difference between operated and non-operated extremity in the JII BCS group of -0.2mm, while for the GII CR group this was 2.3mm. The single leg balance test showed an overall stability index of 2.7° for the JII BCS group, while this was 4.6° for the GII CR group. Both AROM and WOMAC scores were better for the JII BCS group, as compared with the GII CR data.
Conclusions: Replacing the function of the anterior and posterior cruciate ligaments with a bi-cruciate stabilised implant can result in better functional stability outcomes in the early postoperative phase, as compared with conventional cruciate retaining prosthesis in patients after TKA.
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