IQ-SPECT required a higher number of EIs to reach the EFTrue values, possibly due to a smaller number of projections and a more complex reconstruction process.
Of these, 87% were an all-polyethylene design, and 7 of 15 failed in less than 16 months and required more complex reconstruction with stems, augments, and screws and cement.
This study also demonstrates that IBR using an LD flap and/or implant is an acceptable option for most patients without the need for a more complex reconstruction using free tissue transfer and micro-vascular surgery.
It has been reported that 17%% of patients developed venous thrombosis [8] and the incidence may be significantly higher for more complex reconstructions.
In our series, knees that failed by medial tibial collapse had more significant bone defects and required more complex reconstructions than is currently reported in the literature.
However, more complex reconstructions lead to more complications after surgery, such as nerve and vessel damage, wound slough and deep infection, and mechanical or biological failure of the reconstruction [7, 17, 18, 19, 20, 21, 22].
However, young patients undergoing THA with acetabular deficiencies and therefore more complex reconstructions could still have a lower level of activity after surgery relative to primary cemented cups.
The authors' analysis is relevant, but I would like to add the possibility that the increase in more resistant germs such as MRSE and MRSA, and the technically more complex reconstructions have resulted in infections that are more difficult to treat.
Second, patients undergoing two-stage procedures tend to have been more complicated taking into consideration that they had undergone multiple revision procedures and had less bone stock to start off with, which may account for the more complex reconstructions and the higher observed Knee Society scores in the single-stage patients.
The encountered intra-oral defects after tumor resection are often large and require climbing up the reconstruction ladder to more complex reconstructive options for accepted functional and cosmetic results to be achieved.
By extension, to isotropically fill out frequency space with more than two orthogonally oriented sinusoids as we have presented above, more orientations can be implemented into the illumination at the cost of a more mathematically complex reconstruction procedure.
