A custom-made guide for femoral component positioning in hip resurfacing arthroplasty: development and validation study

Figures & data

Figure 1. Computer aided surgery procedure. Segmentation of the bony region (a) is followed by virtual component placement (b) (image created using Mimics®).

Table I.  Quantitative score table for guide concepts – 3D measurement (absolute values).

Measurement entry point distance	>10 mm	>4 mm	≤4 mm	≤2 mm	≤1 mm
Measurement angle	>10°	>4°	≤4°	≤2°	≤1°
Quantitative measurement scoring	Very poor	Poor	Acceptable	Good	Very good

Figure 2. Guide resulting from the guide development study. The components are as follows: 1 – neck collar; 2 – knife collar; 3 – connecting arms; 4 – drill cylinder. (Image created using 3-matic®.)

Figure 3. Box plot of entry-point distance and angular deviation.

Figure 4. Difference in the presence of soft tissue lobes around the femoral head and neck of a live patient (a) and a cadaver (b). The cadaver has less soft tissue present.