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Tibial tubercle osteotomy to improve exposure in complex knee fractures: A cadaveric study and case series

Humza Khan, Karl Grob, Lachlan Peter Milne & Markus Stefan Kuster

abstract

UNASSIGNED
Adequate exposure is fundamental to safely and correctly perform open procedures around the knee. Tibial tubercle osteotomy (TTO) has previously been described as a method to improve exposure, particularly in complex primary elective knee arthroplasty or revision surgery. We describe a tibial tubercle osteotomy technique to improve exposure in complex knee fractures and a cadaveric study and trauma case series.

METHODS
A cadaveric study using 8 knee specimens was conducted using a lateral subvastus approach to the knee. Standardised pictures were taken of the exposure, the tibial tubercle osteotomy was performed and pictures were taken of the new exposed area. These images were compared using a computer program that calculated the area of exposure before and after tibial tubercle osteotomy and the results analysed. The technique was then used in a case series of 6 different complex knee fractures including three distal femoral, one periprosthetic distal femur and two tibial plateau fractures. The outcomes of these patients were followed clinically and radiologically.

RESULTS
All specimens in the cadaveric study demonstrated an increase in area of exposure after the TTO with a mean increase of 148%. All tibial tubercle osteotomies performed in the trauma case series were united by 6 months without complication.

CONCLUSIONS
Tibial tubercle osteotomy is a recognised technique for improving exposure to the knee. This has been demonstrated in a cadaveric study and in a case series of six complex fractures around the knee. If performed properly, this technique can be extended to appropriate trauma cases with good results.
   
citation Khan H, Grob K, Milne L P, Kuster M S. Tibial tubercle osteotomy to improve exposure in complex knee fractures: A cadaveric study and case series. Injury 2016; 47:2331-2338.
   
type journal paper/review (English)
date of publishing 04-05-2016
journal title Injury (47/10)
ISSN electronic 1879-0267
pages 2331-2338
PubMed 27445207
DOI 10.1016/j.injury.2016.03.027