Evaluation of tibial tray coronal plane alignment in total knee replacement using intramedullary JIG-a prospective study

  • Dr. Rahul Sreenivasan Thokaloath Lecturer, Orthopedics, Government Medical College Kottayam, Kerala, India
  • Dr. E.G. Mohankumar Head of the Department, Orthopedics, KIMS Al-Shifa Super Specialty Hospital, Perinthalmanna, Malappuram, Kerala, India
Keywords: Tibial Component Angle [TCA], Total Knee Replacement [TKR], Total Knee Arthroplasty [TKA], intramedullary jig, Tibialtray alignment


Introduction: Long term survivorship in total knee replacement [TKR] is significantly dependant on prosthesis alignment. In a standard total knee replacement, tibial component alignment is a key factor for the long-term success of the surgery.

Materials and Methods: A prospective observational study on 176 subjects who underwent TKR with intramedullary jig for tibial alignment with a minimum follow up period of 6 months was conducted in the Department of orthopaedics, KIMS Al Shifasuper-specialty hospital, Kerala. The Tibial component alignmentwas measured by the Tibial Component Angle [TCA] and Error in Tibial trayalignment. The other outcome variables were knee score, functional score, and Tourniquet time.

Results: The mean TCA in the study population was 90.56º±1.194º ranging from 86.45º to 94.05º. The mean error observed in tibial tray alignment was -0.56±1.199 degrees, ranging from -0.45 to + 3.55 degrees. Accuracy of TCA within 90 ± 2 degrees was achieved in 91.48% of subjects. The mean knee score at 6months was 89.45 ± 3.83. The mean functional score at 6months was 87.55 ± 4.93. The mean tourniquet time was 59.08 ± 5.88 minutes.

Conclusions: Intramedullary tibial referencing guide can be used in TKR with great accuracy (91.48%) to achieve desired coronal plane tibial component alignment (90o ±2o). When TCA was accurate, knee score and functional score were better than non-accurate TCA cases


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Evaluation of tibial tray coronal plane alignment in total knee replacement using intramedullary JIG-a prospective study
DOI: 10.17511/ijoso.2018.i04.03
Published: 2018-12-31
How to Cite
Sreenivasan Thokaloath, R., & Mohankumar, E. (2018). Evaluation of tibial tray coronal plane alignment in total knee replacement using intramedullary JIG-a prospective study. Surgical Review: International Journal of Surgery, Trauma and Orthopedics, 4(4), 144-150. https://doi.org/10.17511/ijoso.2018.i04.03
Original Article