TO PERFORM KA TKA DO I NEED A PRE-OP PLANIFICATION?
NO
Serial verification checks incorporating caliper measurements restores native alignment with high reproducibility
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NEDOPIL AJ, SINGH AK, HOWELL SM, HULL ML
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DOES CALIPERED KINEMATICALLY ALIGNED TKA RESTORE NATIVE LEFT TO RIGHT SYMMETRY OF THE LOWERLIMB AND IMPROVE FUNCTION?
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J ARTHROPLASTY. 2018
DO KA TKA RESTORE BETTER SATISFACTION, FUNCTION AND MOTION THAN MA TKA IN SHORT FOLLOW UP (24 months) ?
YES
6 of 9 Independent RCTs (Randomized Control Trials Studies) from all over the world show KA TKA provides better results than MA TKA
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DOSSETT HG, ESTRADA NA, SWARTZ GJ, LEFEVRE GW, KWASMAN BG.
A RANDOMISED CONTROLLED TRIAL OF KINEMATICALLY AND MECHANICALLY ALIGNED TOTAL KNEE REPLACEMENTS: TWO-YEAR CLINICAL RESULTS.
BONE JOINT J. 2014
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CALLIESS T, BAUER K, STUKENBORG-COLSMAN C, WINDHAGEN H, BUDDE S, ETTINGER M.
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PSI KINEMATIC VERSUS NON-PSI MECHANICAL ALIGNMENT IN TOTAL KNEE ARTHROPLASTY: A PROSPECTIVE, RANDOMIZED STUDY.
KNEE SURG SPORTS TRAUMATOL ARTHROSC. 2017
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MATSUMOTO T, TAKAYAMA K, ISHIDA K, HAYASHI S, HASHIMOTO S, KURODA R.
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RADIOLOGICAL AND CLINICAL COMPARISON OF KINEMATICALLY VERSUS MECHANICALLY ALIGNED TOTAL KNEE ARTHROPLASTY.
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BONE JOINT J, 2017
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McEWEN PJ, DLASKA CE, JOVANOVIC IA, DOMA K, BRANDON BJ.
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COMPUTER-ASSISTED KINEMATIC AND MECHANICAL AXIS TOTAL KNEE ARTHROPLASTY: A PROSPECTIVE RANDOMIZED CONTROLLED TRIAL OF BILATERAL SIMULTANEOUS SURGERY.
J ARTHROPLASTY. 2019
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FRENCH SR, MUNIR S, BRIGHTON R.
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A SINGLE SURGEON SERIES COMPARING THE OUTCOMES OF A CRUCIATE RETAINING AND MEDIALLY STABILIZED TOTAL KNEE ARTHROPLASTY USING KINEMATIC ALIGNMENT PRINCIPLES. J
J ARTHROPLASTY. 2020
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MACDESSI SJ, GRIFFITHS-JONES W, CHEN DB, GRIFFITHS-JONES S, WOOD JA, DIWAN AD, HARRIS IA.
RESTORING THE CONSTITUTIONAL ALIGNMENT WITH A RESTRICTIVE KINEMATIC PROTOCOL IMPROVES QUANTITATIVE SOFT-TISSUE BALANCE IN TOTAL KNEE ARTHROPLASTY: A RANDOMIZED CONTROLLED TRIAL.
BONE JOINT J. 2020
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DO KA TKA WITH SOME RESTRICTIONS OF PRE-OP DEFORMITY OR POST-OP CORRECTION RESTORE BETTER SATISFACTION, FUNCTION AND MOTION THAN MA TKA IN SHORT FOLLOW UP ?
NO
3 of 9 Independent RCTs (Randomized Control Trials Studies) show KA TKA provides equal results than MA TKA if some restrictions are placed on pre-op deformity and post-op corrections
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YOUNG SW, WALKER ML, BAYAN A, ET AL.
THE CHITRANJAN S. RANAWAT AWARD: NO DIFFERENCE IN 2-YEAR FUNCTIONAL OUTCOMES USING KINEMATIC VERSUS MECHANICAL ALIGNMENT IN TKA: A RANDOMIZED CONTROLLED CLINICAL TRIAL.
CLIN ORTHOP RELAT RES 2016
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WATERSON HB, CLEMENT ND, EYRES KS, MANDALIA VI, TOMS AD.
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THE EARLY OUTCOME OF KINEMATIC VERSUS MECHANICAL ALIGNMENT IN TOTAL KNEE ARTHROPLASTY: A PROSPECTIVE RANDOMISED CONTROL TRIAL.
BONE JOINT J. 2016
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LAENDE EK, RICHARDSON CG, DUNBAR MJ.
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A RANDOMIZED CONTROLLED TRIAL OF TIBIAL COMPONENT MIGRATION WITH KINEMATIC ALIGNMENT USING PATIENT-SPECIFICINSTRUMENTATION VERSUS MECHANICAL ALIGNMENT USING COMPUTER-ASSISTED SURGERY IN TOTAL KNEE ARTHROPLASTY.
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BONE JOINT J. 2019
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AT 10-YEAR FOLLOW UP ARE THE ASEPTIC FAILURES MORE FREQUENT WITH KA TKA THAN WITH MA TKA ?
NO
Aseptic survival at 10 years of KA TKA without any restrictions (except incompetence of medial collateral ligament in valgus knees) is 98,5% in comparison of 93% of MA TKA
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HOWELL SM, SHELTON TJ, HULL ML.
IMPLANT SURVIVAL AND FUNCTION TEN YEARS AFTER KINEMATICALLY ALIGNED TOTAL KNEE ARTHROPLASTY.
J ARTHROPLASTY 2018
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ABDEL MP, OLLIVIER M, PARRATTE S, TROUSDALE RT, BERRY DJ, PAGNANO MW.
EFFECT OF POST-OPERATIVE MECHANICAL AXIS ALIGNMENT ON SURVIVAL AND FUNCTIONAL OUTCOMES OF MODERN TOTAL KNEE ARTHROPLASTIES WITH CEMENT: A CONCISE FOLLOW-UP AT 20 YEARS.
J BONE JOINT SURG AM. 2018
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ARE THE FAILURES OF KA TKA DUE TO AN EXCESSIVE VARUS PLACING OF THE TIBIAL COMPONENT ?
NO
Tibial component failure is infrequent (0,3%), NEVER due to excessive varus placement, instead due to excessive slope than native. This type of failure is minimized by restoring native slope. Simply look at your cut from lateral!
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NEDOPIL AJ, HOWELL SM, HULL ML.
WHAT MECHANISMS ARE ASSOCIATED WITH TIBIAL COMPONENT FAILURE AFTER KINEMATICALLY-ALIGNED TOTAL KNEE ARTHROPLASTY?
INT ORTHOP. 2017
DO VARUS OR VALGUS OUTLIERS HAVE HIGHER FORCES IN THE MEDIAL OR LATERAL COMPARTMENT THAN THOSE WHICH ARE IN RANGE AFTER KA TKA?
NO
The intra-operative forces in the medial and lateral compartments of patients with outlier alignment were comparable with those with in-range alignment (1).
Furthermore the intra-operative forces are three to six times lower than those reported for MA TKA (2).
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(1) SHELTON TJ, NEDOPIL AJ, HOWELL SM, HULL ML
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DO VARUS OR VALGUS OUTLIERS HAVE HIGHER FORCES IN THE MEDIAL OR LATERAL COMPARTMENTS THAN THOSE WHICH ARE IN-RANGE AFTER A KINEMATICALLY ALIGNED TOTAL KNEE ARTHROPLASTY? LIMB AND JOINT LINE ALIGNMENT AFTER KINEMATICALLY ALIGNED TOTAL KNEE ARTHROPLASTY
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BONE JOINT J. 2017
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(2) MENEGHINI RM, ZIEMBA-DAVIS MM, ET AL.
CAN INTRAOPERATIVE SENSORS DETERMINE THE “TARGET” LIGAMENT BALANCE? EARLY OUTCOMES IN TOTAL KNEE ARTHROPLASTY
J ARTHRO PLASTY 2016
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TKA HAVE BEEN DESIGNED FOR MA TKA. DO THEY ALSO WORK WITH KA TKA, EXPECIALLY FOR THE PATELLO-FEMORAL JOINT?
YES
Considering different designs of prosthesis KA technique more closely restores the groove location than MA technique
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LOZANO R, CAMPANELLI V, HOWELL S, HULL M.
KINEMATIC ALIGNMENT MORE CLOSELY RESTORES THE GROOVE LOCATION AND THE SULCUS ANGLE OF THE NATIVE TROCHLEA THAN MECHANICAL ALIGNMENT: IMPLICATIONS FOR PROSTHETIC DESIGN
KNEE SURG SPORTS TRAUMATOL ARTHROSC. 2019
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RIVIÈRE C, IRANPOUR F, HARRIS S, AUVINET E, AFRAMIAN A, PARRATTE S, COBB J.
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DIFFERENCES IN TROCHLEAR PARAMETERS BETWEEN NATIVE AND PROSTHETIC KINEMATICALLY OR MECHANICALLY ALIGNED KNEES.
ORTHOP TRAUMATOL SURG RES. 2018
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IS PATELLA INSTABILITY AFTER KA TKA A RELEVANT PROBLEM?
NO
Patella instability after KA TKA is infrequent (0.4%) and not due to the design of the TKA related to positioning with a KA technique. Presented atraumatically at 5 months post-op. Patients with PF Instability had 5° more flexion of the femoral component than controls. This type of failure is minimized by restoring the flexion of native DISTAL FEMUR.
NEDOPIL AJ, HOWELL SM, HULL ML
WHAT CLINICAL CHARACTERISTICS AND RADIOGRAPHIC PARAMETERS ARE ASSOCIATED WITH PATELLOFEMORAL INSTABILITY AFTER KINEMATICALLY ALIGNED TOTAL KNEE ARTHROPLASTY?
INT ORTHOP. 2017