Malposition of the acetabular component is a risk factor for post-operative dislocation after
The aim of our study was to describe the characteristics,
treatment, and outcomes of patients with periprosthetic joint infection
(PJI) and normal inflammatory markers after total knee arthroplasty
(TKA) and
Aims. The primary aim of this study was to analyse the position of
the acetabular and femoral components in total hip arthroplasty
undertaken using an anterior surgical approach. . Patients and Methods. In a prospective, single centre study, we used the EOS imaging
system to analyse the position of components following THA performed
via the anterior approach in 102 patients (103 hips) with a mean
age of 64.7 years (. sd. 12.6). Images were taken with patients
in the standing position, allowing measurement of both anatomical
and functional anteversion of the acetabular component. . Results. The mean inclination of the acetabular component was 39° (standard
deviation (. sd). 6), the mean anatomical anteversion was
30° (. sd. 10), and the mean functional anteversion was 31°
(. sd. 8) five days after surgery. The mean anteversion of
the femoral component was 20° (. sd. 11). Anatomical and functional
anteversion of the acetabular component differed by >
10° in 23
(22%) cases. Pelvic tilt was the only pre-operative predictive factor
of this difference. Conclusion. Our study showed that anteversion of the acetabular component
following THA using the anterior approach was greater than the recommended
target value, and that substantial differences were observed in
some patients when measured using two different measurement planes.
If these results are confirmed by further studies, and considering
that the anterior approach is intended to limit the incidence of
dislocation, a new correlation study for each reference plane (anatomical
and functional) will be necessary to define a ‘safe zone’ for use
with the anterior approach. Take home message: EOS imaging system is helpful in the pre-operative
and post-operative radiological analysis of
Bilateral venography was performed between 12 and 15 days after
Post-mortem retrieval of canine, cemented femoral components was analysed to assess the performance of these implants in the dog as a model for human
This study compared component wear rates and pre-revision blood metal ions levels in two groups of failed metal-on-metal hip arthroplasties: hip resurfacing and modular
We present a case of early retrieval of an Oxinium femoral head and corresponding polyethylene liner where there was significant surface damage to the head and polyethylene. The implants were retrieved at the time of revision surgery to correct leg-length discrepancy just 48 hours after the primary hip replacement. Appropriate analysis of the retrieved femoral head demonstrated loss of the Oxinium layer with exposure of the underlying substrate and transfer of titanium from the acetabular shell at the time of a reduction of the index
Deep prosthetic joint infection remains an uncommon but serious complication of
We present a case of delayed presentation of a subdural haematoma causing cauda equina syndrome which occurred 96 hours after a spinal anaesthetic had been administered for an elective
The aim of this study was to assess whether a femoral component which retained the neck reduced the incidence of leg-length inequality following
The occurrence of an osteosarcoma at the site of a cobalt-chrome total hip replacement is described, and the possibility of the tumour arising as a result of the liberation of cobalt particles is discussed. The experimental and clinical evidence relating tumour formation to the presence of particulate metals, and to the presence of solid and particulate polyethylene, is presented. It is considered that the risk of tumour formation at the site of any
We report a systematic review and meta-analysis of published randomised controlled trials evaluating the efficacy of tranexamic acid (TXA) in reducing blood loss and transfusion in
We report six cases of contralateral limb involvement during
The survivorship of
We describe a patient with cerebral palsy, of normal intelligence, who could not walk but who by the age of 16 had been successfully managed with a staged bilateral
Ninety-seven revisions of
We compared the radiographic results of secondary
We report the kinematic and early clinical results
of a patient- and observer-blinded randomised controlled trial in which
CT scans were used to compare potential impingement-free range of
movement (ROM) and acetabular component cover between patients treated
with either the navigated ‘femur-first’
We reviewed 123 second-generation uncemented
Orientation of the native acetabular plane as defined by the transverse acetabular ligament (TAL) and the posterior labrum was measured intra-operatively using computer-assisted navigation in 39 hips. In order to assess the influence of alignment on impingement, the range of movement was calculated for that defined by the TAL and the posterior labrum and compared with a standard acetabular component position (abduction 45°/anteversion 15°). With respect to the registration of the plane defined by the TAL and the posterior labrum, there was moderate interobserver agreement (r = 0.64, p <
0.001) and intra-observer reproducibility (r = 0.73, p <
0.001). The mean acetabular component orientation achieved was abduction of 41° (32° to 51°) and anteversion of 18° (−1° to 36°). With respect to the Lewinnek safe zone (abduction 40° ±10°, anteversion 15° ±10°), 35 of the 39 acetabular components were within this zone. However, there was no improvement in the range of movement (p = 0.94) and no significant difference in impingement (p = 0.085). Alignment of the acetabular component with the TAL and the posterior labrum might reduce the variability of acetabular component placement in