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S e p t e m b e r 0 6 - 0 7 , 2 0 1 8 | B a n g k o k , T h a i l a n d

Note:

allied

academies

Joint Event on

Global Women Health 2018 & Orthopedics Congress 2018

Archives of General Internal Medicine

ISSN: 2591-7951

Volume 2

BREAST CANCER, GYNECOLOGY AND WOMEN HEALTH

ORTHOPEDICS AND RHEUMATOLOGY

World Congress on

Annual Conference on

Arch Gen Intern Med 2018, Volume 2 | DOI: 10.4066/2591-7951-C3-009

IMPROVED ALIGNMENT AND OPERATING ROOM EFFICIENCY COST WITH

PATIENT SPECIFIC INSTRUMENTATION FOR TKA

Luc Renson

, Pascal Poilvache

and

Hans Van den Wyngaert

STZH Hospital Sint Truiden, Belgium

Katholieke Universiteit Leuven, Belgium

Background:

Patient specific instrumentation (PSI) created using preoperative 3D modelling was developed to offer surgeons a

simplified, reliable, efficient and customised TKA procedure.

Methods

: In this prospective study, 60 patients who underwent TKA with conventional instrumentation and 71 patients operated

on using PSI were followed for one year. The primary endpoint was surgical time. Secondary endpoints included the number of

instrument trays used, radiographic limb alignment and clinical outcomes.

Results:

Comparedwith conventional instrumentation, PSI significantly reduced total surgical time (mean, 8.9minutes; ±3.3minutes

(standard deviation); p=0.038), OR time (8.6±4.2minutes; p=0.043), and number of instrument trays (six trays, p<0.001). Mechanical

axis malalignment of the lower limb >3° was observed in 14% of PSI patients versus 29% with conventional instrumentation

(p=0.043). PSI predicted the size of the actual femoral and tibial components used in 85.9% and 78.9% of cases, respectively. There

were no differences in VAS pain, EQ-5D and oxford knee scores at one-year follow-up

Conclusion:

PSI improves alignment, surgical and OR time over conventional instrumentation, reduces the number of instruments

trays used and results in fewer outliers in overall mechanical alignment in the coronal plane. No advantages in terms of clinical

outcome were noticed up to one year of follow-up.