Aims. Hip displacement, common in patients with cerebral palsy (CP), causes pain and hinders adequate care.
The August 2023 Children’s orthopaedics Roundup360 looks at: DDH: What can patients expect after open reduction?; Femoral head deformity associated with hip displacement in non-ambulatory cerebral palsy; Bony hip reconstruction for displaced hips in patients with cerebral palsy: is postoperative immobilization indicated?; Opioid re-prescriptions after ACL reconstruction in adolescents are associated with subsequent opioid use disorder; Normative femoral and tibial lengths in a modern population of USA children; Retrospective analysis of associated anomalies in 636 patients with operatively treated congenital scoliosis; Radiological hip shape and patient-reported outcome measures in healed Perthes’ disease; Significantly displaced adolescent posterior sternoclavicular joint injuries.
The purpose of this study was to evaluate the biological fixation of a 3D printed porous implant, with and without different hydroxyapatite (HA) coatings, in a canine model. A canine transcortical model was used to evaluate the characteristics of bone ingrowth of Ti6Al4V cylindrical implants fabricated using laser rapid manufacturing (LRM). At four and 12 weeks post-implantation, we performed histological analysis and mechanical push-out testing on three groups of implants: a HA-free control (LRM), LRM with precipitated HA (LRM-PA), and LRM with plasma-sprayed HA (LRM-PSHA).Aims
Materials and Methods
We report the results at a mean of 24.3 years
(20 to 32) of 61 previously reported consecutive total hip replacements carried
out on 44 patients with severe congenital hip disease, performed
with reconstruction of the acetabulum with an impaction grafting
technique known as cotyloplasty. The mean age of the patients at
operation was 46.7 years (23 to 68) and all were women. The patients
were followed post-operatively for a mean of 24.3 years (20 to 32), using
the Merle d’Aubigné and Postel scoring system as modified by Charnley,
and with serial radiographs. At the time of the latest follow-up,
28 acetabular components had been revised because of aseptic loosening
at a mean of 15.9 years (6 to 26), and one at 40 days after surgery
because of repeated dislocations. The overall survival rate for aseptic
failure of the acetabular component at ten years was 93.1% (95%
confidence interval (CI) 86.5 to 96.7) when 53 hips were at risk,
and at 23 years was 56.1% (95% CI 49.4 to 62.8), when 22 hips remained
at risk. These long-term results are considered satisfactory for
the reconstruction of an acetabulum presenting with inadequate bone
stock and circumferential segmental defects. Cite this article: