Corrigendum to “Leg length inequality following total hip replacement” [Orthopaed Trauma 25 (2011) 37–42]

The authors of this article would like to draw attention to an error in the investigations section on page 40. In the third paragraph, the sentence starting ‘This provides three measurements per hip…’ should read: “This provides three measurements per hip, the CFR to teardrop, which corresponds to any change in leg length associated with the cup, the CFR to trochanter for LLI due to the stem and an overall measurement of leg length the teardrop to lesser trochanter; these can be of particular use in the audit of practice and in the bilateral or revision setting.” A corrected version of Figure 6 is also reproduced below. The authors would like to apologise for any inconvenience caused. Figure 6 caption: The Leeds method for measuring LLI on a radiograph. The reference line bisects the centres of femoral rotation. Two further parallel lines per hip are then drawn, the first at the level of the acetabular teardrop and the second at the level of the midpoint of the lesser trochanter. This produces three measurements per hip, C equating to any LLI due to the cup position, S any LLI due to the stem and overall measurement O. In this case the C measurements are similar, S is greater on the arthroplasty side and the overall measurement, O, is greater. Therefore the lengthening in this arthroplasty is predominantly due to the stem. Leg length inequality following total hip replacementOrthopaedics and TraumaVol. 25Issue 1PreviewTotal hip replacement is a technical and demanding operation and subsequent leg length inequality (LLI) is a recognized complication. Although noted when the operation was popularized in the 1960s it was in the 1990s that it increased in prominence. LLI following total hip replacement is an independent risk factor in the outcome of total hip replacement. While not everyone with a post-total hip replacement LLI will be symptomatic, those who are can complain of mechanical problems, pain and neurological deficit. Full-Text PDF