Background: A discrepancy in leg length and femoral offset restoration is the leading cause of patient dissatisfaction in hip replacement surgery and has profound implications on patient quality of life. The aim of this study is to compare biomechanical hip reconstruction in hip resurfacing, large-diameter femoral head hip arthroplasty and conventional total hip replacement.
Method: Sixty patient's post-operative radiographs were reviewed; 20 patients had a hip resurfacing (HR), 20 patients had a Large Head Metal-on-metal (LHM) hip replacement and 20 patients had a conventional small head Total Hip Replacement (THR). The leg length and femoral offset of the operated and unoperated hips were measured and compared.
Results: Hip resurfacing accurately restored hip biomechanics with no statistical difference in leg length (P = 0.07) or femoral offset (P = 0.95) between the operated and non-operative hips. Overall HR was superior for reducing femoral offset discrepancies where it had the smallest bilateral difference (-0.2%, P = 0.9). The traditional total hip replacement was least effective at restoring the hip anatomy.
Conclusion: The use of a larger-diameter femoral head in hip resurfacing does not fully account for the superior biomechanical restoration, as LHM did not restore femoral offset as accurately. We conclude that restoration of normal hip biomechanics is best achieved with hip resurfacing.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3298517 | PMC |
http://dx.doi.org/10.1186/1749-799X-6-65 | DOI Listing |
J Arthroplasty
December 2024
Department of Orthopedic Surgery and Traumatology. La Paz University Hospital. Madrid, Spain; La Paz University Hospital. Paseo de la Castellana, 261, 28046, Madrid, Spain.
Background: The purpose of the study was to analyze the appearance of pelvic obliquity before total hip arthroplasty (THA) in adults who have Legg-Calvé-Perthes disease (LCPD) sequelae and its evolution in the first two postoperative years, identifying which factors influence its development.
Methods: The THAs performed between 2012 and 2021 at a single institution in adults who had LCPD during childhood were retrospectively identified. Each case was matched 1:1, based on age at surgery, sex, and body mass index, with a primary THA performed for hip osteoarthritis (primary OA).
Arch Orthop Trauma Surg
December 2024
Adventist Health Memorial Hospital, Lodi, CA, USA.
Background: Patellofemoral joint (PFJ) issues after total knee arthroplasty (TKA) are becoming a topic of interest once again. Due to the complex three-dimensional shape of the trochlea, various two-dimensional proxy measurements on plain X-rays have been described. One of these measurements is the anterior femoral offset (AFO).
View Article and Find Full Text PDFIntroduction: Various techniques have been described for restoring leg length and offset during total hip arthroplasty (THA). We herein describe a novel "Quartered Head Technique" (QHT) involving a series of femoral osteotomies.
Methods: 124 hips were included in the analysis.
Arthroplast Today
December 2024
Department of Orthopedic Surgery, NorthShore Skokie Hospital, Skokie, IL, USA.
Background: The addition of computer navigation (CN) technology in direct anterior approach (DAA) total hip arthroplasty (THA) has the potential to improve restoration of hip offset and leg length. In this investigation, we examine the effect of one fluoroscopic-based CN system on biomechanical parameters in DAA THA with femur-first (FF) workflow.
Methods: A retrospective review was performed on 235 primary DAA FF THA cases, with 100 CN cases and 135 in the conventional fluoroscopic overlay (FO) group.
Injury
October 2024
Department of Orthopaedic Surgery and Traumatology, Hospital Universitario La Paz, Madrid, Spain. Electronic address:
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