Abstract
Purpose
Fully conforming, mobile-bearing total knee replacement (TKR) was initially designed using a posterior cruciate-sacrificing (CS) technique. Rotating-platform TKR that could also be performed retaining the posterior cruciate developed afterwards. The purpose of this study was to compare the clinical and functional outcomes of patients who had either cruciate-retaining (CR) or cruciate-sacrificing (CS) TKR at a minimum follow-up of 2 years with the same prosthetic design.
Methods
One hundred and two consecutive TKR (88 patients) were performed at the same institution either with CS (56 TKR—49 patients) or with CR (46 TKR—39 patients) technique. Patients were followed at a minimum of 2 years. Patients were evaluated for articular range of motion, complication rate (infection, loosening) and clinical outcome measures included the pain and functional components of the Knee Society Score.
Results
The two groups (CS, CR) were homogeneous. At final follow-up, no significant difference was seen between the two surgical techniques in terms of ROM, pain and functional level, and revision rate.
Conclusions
This study showed that for this given mobile-bearing, fully conforming prosthetic design, sacrificing or resecting the PCL does not influence the clinical and functional outcomes at a minimum of 2-year follow-up. Surgeons may indifferently choose one of the two options (CS, CR) according to their preferences.
Level of evidence
Case series, level IV.
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Conflict of interest
Davide Enea received a Grant (No. 012102) cofinanced by Permedica s.p.a. and the Polytechnic University of Marche. The other authors declare no conflicts of interest.
Ethical standard
This work was performed in keeping with the ethical standards of the 1964 Declaration of Helsinki as revised in 2000. All the patients gave their informed consent prior to being included into the study, and the study was authorized by the local ethical committee.
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Enea, D., Cigna, V., Sgolacchia, C. et al. Retained versus resected posterior cruciate ligament in mobile-bearing total knee replacement: a retrospective, clinical and functional assessment. Musculoskelet Surg 99, 149–154 (2015). https://doi.org/10.1007/s12306-014-0345-9
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DOI: https://doi.org/10.1007/s12306-014-0345-9