Short-Term Results of Patient Specific Instruments (PSI) – Total Knee Replacement (TKR)
Mahmoud, M., Amr, A., Hafez, M. (2020). Short-Term Results of Patient Specific Instruments (PSI) – Total Knee Replacement (TKR). EKB Journal Management System, 81(5), 2036-2045. doi: 10.21608/ejhm.2020.124803
Mohamed Mosa Mohamed Mahmoud; Amr Abdelhalem Amr; MA Hafez. "Short-Term Results of Patient Specific Instruments (PSI) – Total Knee Replacement (TKR)". EKB Journal Management System, 81, 5, 2020, 2036-2045. doi: 10.21608/ejhm.2020.124803
Mahmoud, M., Amr, A., Hafez, M. (2020). 'Short-Term Results of Patient Specific Instruments (PSI) – Total Knee Replacement (TKR)', EKB Journal Management System, 81(5), pp. 2036-2045. doi: 10.21608/ejhm.2020.124803
Mahmoud, M., Amr, A., Hafez, M. Short-Term Results of Patient Specific Instruments (PSI) – Total Knee Replacement (TKR). EKB Journal Management System, 2020; 81(5): 2036-2045. doi: 10.21608/ejhm.2020.124803

Short-Term Results of Patient Specific Instruments (PSI) – Total Knee Replacement (TKR)

The Egyptian Journal of Hospital Medicine
Article 19, Volume 81, Issue 5, October 2020, Page 2036-2045  XML PDF (600.11 K)
Document Type: Original Article
DOI: 10.21608/ejhm.2020.124803
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Authors
Mohamed Mosa Mohamed Mahmoud email 1; Amr Abdelhalem Amr1; MA Hafez2
1Department of Orthopaedic and Trauma Surgery, Faculty of Medicine, Al Azhar University, Assiut Branch
2Department of Orthopaedic and Trauma Surgery, Faculty of Medicine, 6 October University
Abstract
Background: TKR is an effective treatment for severely arthritic knees. PSI TKR is a recent technique, which relies on preoperative formulation of specific instruments for every patient preoperatively, aiming at decreasing surgical time and instruments and increasing accuracy and functional outcome. Objective: Assessment of functional and radiological outcome of PSI TKR after a period of 3 years duration. Patients and Methods: 40 TKRs in 24 patients were done using CT-based PSI technique. Pre-and postoperative knee society score (KSS) were measured and digital long-leg X-rays were obtained for all patients. Hip-knee-ankle, proximal tibia land lateral distal femoral angles together with mechanical axis deviation were measured for all patients to assess the mechanical axis alignment after TKR. Results: HKA (hip knee ankle) has decreased from 4.70 varus preoperatively to 1.27 varus. The mean knee society score had markedly increased from 31.2 preoperatively to 85.3 with fair to excellent KSS was 95% after 3 years duration. Conclusion: PSI TKR is an effective technique in knee replacement as conventional method. With the advantages of reduction of the operative steps and concurrent potential complications.
Keywords
PSI; TKR
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