Background: Adjustment of leg length discrepancy is an important factor influencing the outcome of total hip arthroplasty (THA). However, leg length discrepancy after THA has been reported to be associated with inferior clinical outcome in previous studies. A new version of the imageless navigation software "OrthoPilot THAplus" has been developed to assess the leg length adjustment and offset value. The clear advantage of this system is the elimination of the need for femoral pin insertion, which is associated with potential complications and additional surgical invasion.
Methods: In this study, the accuracy of this newly developed system was evaluated in 50 consecutive hips implanted with primary THA. The operative results of these 50 patients were compared with those of another 50 consecutive primary THA patients operated on with the previous navigation system that was not equipped with the leg length adjustment system.
Results: After surgery, the average leg length discrepancy in the THA plus group was 0.9 mm (range -5 to 5 mm), while the corresponding value in the other group with the older software was 2.9 mm (range -13 to 20 mm), showing a significant difference.
Conclusion: The accuracy and reproducibility of new software added to the imageless THA navigation system in achieving equalization of leg length were assessed. Comparison of the surgical results as compared with the control group performed with the conventional navigation system showed the advantage of this system over the previous system.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00776-011-0038-2 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Simultaneous total hip and knee arthroplasties in hemophilic arthropathy: series of 5 cases.
Acta Orthop Traumatol Turc
December 2024
Department of Orthopedics and Traumatology, Ege University School of Medicine, Izmir, Türkiye.
Objective: This study aimed to compare preoperative and postoperative measures in haemophiliacs who had simultaneous total hip and knee arthroplasties.
Methods: A retrospective database search identified five patients with severe factor 8 deficiencies who underwent simultaneous hip and knee joint replacement surgery between 2002-2018. Preoperative and postoperative evaluations included Harris Hip Score (HHS), Knee Society Score (KSS), Knee Injury and Osteoarthritis Outcome Score (KOOS), range of motion, flexion contracture (FC), Visual Analog Scale (VAS), hip-knee angle, and leg length discrepancy.
High Dimensionless Figure of Merit and Efficiency Thermoelectrics for Operation below Sub-250 °C─Origin of Colossal Seebeck Coefficient with Phonon Assisting, Coexistence with Electrical Conductivity, and Device Application for Their Multilayered Structure.
ACS Appl Mater Interfaces
January 2025
Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
Thermoelectric (TE) devices recycle high-temperature waste-heat efficiently, but waste-heat below sub-250 °C remains uncaptured. As promoting full autonomy for the Internet of Things (IoT), we present a TE generator using multilayered pseudo--type GaN/TiN/GaN and -type TiO/TiN/TiO TE one-leg devices, where heterozygous of outer/inner layers demonstrates the functions of a colossal Seebeck coefficient ( = +15,000 μV K) with phonon-assist hopping, controlling by the porosity for reducing thermal conductivity (κ), a high electric conductivity (σ) with reducing κ by outer layers, and σ- coexistence over singular curve by the asymmetric electrode configuration. is elucidated hopping among inner grains and the space charge (SC) grain boundary (GB) of 100 μm regions within Debye length.
View Article and Find Full Text PDFMorselized Femoral Head Impaction Bone Grafting of Large Defects in Ankle and Hindfoot Fusions.
Foot Ankle Int
January 2025
Royal National Orthopaedic Hospital NHS Trust, Foot & Ankle Unit, Stanmore, United Kingdom.
Background: Ankle and hindfoot fusion in the presence of large bony defects represents a challenging problem. The purpose of this study was to evaluate outcomes of patients who underwent ankle-hindfoot fusions with impaction bone grafting (IBG) with morselized femoral head allograft to fill large bony void defects.
Methods: This was a 3-center, retrospective review of a consecutive series of 49 patients undergoing ankle or hindfoot fusions with femoral head IBG for filling large bony defects.
Gait, balance, and physical performance as markers of early Alzheimer's disease and related dementia risk.
J Alzheimers Dis
January 2025
Comprehensive Center for Brain Health, Department of Neurology, Miller School of Medicine, University of Miami, Boca Raton, FL, USA.
Background: Declining physical functionality is an indicator of cognitive impairment, distinguishing normal cognition (NC) from dementia. Whether this extends to pre-dementia stages is unclear.
Objective: Assess physical performance patterns, evaluate relationships with imaging biomarkers, and identify specific measures distinguishing NC, subjective cognitive decline (SCD) and mild cognitive impairment (MCI).
Morphological Comparisons of Adult Worker Bees Developed in Chinese and Italian Honey Bee Combs.
Insects
January 2025
Yunnan Provincial Engineering and Research Center for Sustainable Utilization of Honey Bee Resources, Eastern Bee Research Institute, College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China.
The size of comb cells is a key factor influencing the body size of honey bee workers. Comb cells and the body size of Chinese honey bee workers are smaller than those of Italian honey bee workers. To increase the size of Chinese honey bee workers, this study used newly built combs from Chinese honey bee colonies (control group) and Italian honey bee colonies (treatment group).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!