scholarly journals Subchondral Bone Relative Area and Density in Human Osteoarthritic Femoral Heads Assessed with Micro-CT before and after Mechanical Embedding of the Innovative Multi-Spiked Connecting Scaffold for Resurfacing THA Endoprostheses: A Pilot Study

2021 ◽  
Vol 10 (13) ◽  
pp. 2937
Author(s):  
Mikołaj Dąbrowski ◽  
Piotr Rogala ◽  
Ryszard Uklejewski ◽  
Adam Patalas ◽  
Mariusz Winiecki ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Trabecular Bone ◽  
Hip Arthroplasty ◽  
Relative Area ◽  
Micro Ct ◽  
Calculated Density ◽  
Total Hip ◽  
Femoral Heads ◽  
Before And After ◽  
Relative Change

The multi-spiked connecting scaffold (MSC-Scaffold) prototype is the essential innovation in the fixation of components of resurfacing total hip arthroplasty (THRA) endoprostheses in the subchondral trabecular bone. We conducted the computed micro-tomography (micro-CT) assessment of the subchondral trabecular bone microarchitecture before and after the MSC-Scaffold embedding in femoral heads removed during long-stem endoprosthesis total hip arthroplasty (THA) of different bone densities from 4 patients with hip osteoarthritis (OA). The embedding of the MSC-Scaffold in subchondral trabecular bone causes the change in its relative area (BA/TA, bone area/total area ratio) ranged from 18.2% to 24.7% (translating to the calculated density ρB relative change 11.1–14.4%, and the compressive strength S relative change 75.3–122.7%) regardless of its initial density (before the MSC-Scaffold embedding). The densification of the trabecular microarchitecture of subchondral trabecular bone due to the MSC-Scaffold initial embedding gradually decreases with the increasing distance from the apexes of the MSC-Scaffold’s spikes while the spatial extent of this subchondral trabecular bone densification ranged from 1.5 to 2.5 mm (which is about half the height of the MSC-Scaffold’s spikes). It may be suggested, despite the limited number of examined femoral heads, that: (1) the magnitude of the effect of the MSC-Scaffold embedding on subchondral trabecular bone densification may be a factor contributing to the maintenance of the MSC-Scaffold also for decreased initial bone density values, (2) the deeper this effect of the subchondral trabecular bone densification, the better strength of subchondral trabecular bone, and as consequence, the better post-operative embedding of the MSC-Scaffold in the bone should be expected.

Changes in sexual activity of male patients with ankylosing spondylitis undergoing total hip arthroplasty

2018 ◽  
Vol 29 (3) ◽  
pp. 310-315 ◽  
Author(s):  
Jun Fu ◽  
Xiang Li ◽  
Kan Liu ◽  
Jiying Chen ◽  
Ming Ni ◽  
...  
Keyword(s):  
Ankylosing Spondylitis ◽  
Total Hip Arthroplasty ◽  
Sexual Activity ◽  
Hip Arthroplasty ◽  
Harris Hip Score ◽  
Clinical Parameters ◽  
Total Hip ◽  
Flexion Extension ◽  
Before And After ◽  
Male Patients

Introduction: Sexual activity is often an important component of life. To date, no studies have examined sexual activity before and after total hip arthroplasty (THA) in male patients with ankylosing spondylitis (AS). The purpose of the current study was to evaluate the effect of THA on sexual activity and to explore the most commonly reported and comfortable coital position for male AS patients with hip involvement. Methods: Data from 31 male AS patients who underwent THA for hip involvement were retrospectively reviewed. Information from the International Index of Erectile Function (IIEF), the Harris Hip Score (HHS) and other clinical parameters was collected and monitored over time. We compared the above-mentioned parameters before surgery and 2 years after surgery and analysed the correlation between changes on the IIEF and changes in clinical parameters. Results: The domain and total scores of the IIEF, except EF, were significantly higher after surgery than were those before surgery ( p < 0.05). There was a significant positive correlation between changes on the IIEF and improvement in flexion-extension range of motion (ROM), adduction-abduction ROM and HHS ( p < 0.05). Most patients (26/31, 83.9%) resumed sexual activity 5–12 weeks after surgery. The pre- and postoperative distributions of the most commonly reported and comfortable position were not significantly different (p > 0.05). Conclusions: Successful THA may improve sexual activity in male AS patients with hip involvement. Changes in hip ROM show the most significant correlation with improvement in sexual activity. Resumption of sexual activity occurs within 5–12 postoperative weeks.

Femoral head material loss at the head-neck junction in total hip arthroplasty: the effect of head size, stem material and stem offset

2018 ◽  
Vol 29 (6) ◽  
pp. 647-651 ◽  
Author(s):  
Giuseppe Valente ◽  
Brent Lanting ◽  
Steven MacDonald ◽  
Matthew G Teeter ◽  
Douglas Van Citters ◽  
...  
Keyword(s):  
Femoral Head ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Head Size ◽  
Material Loss ◽  
Total Hip ◽  
Femoral Heads ◽  
Measuring Machine ◽  
Head Neck ◽  
Neck Junction

Introduction:Material loss at the head-neck junction in total hip arthroplasty may cause adverse clinical symptoms and implant failure. The purpose of this study was to quantitatively examine the effects of head size, stem material and stem offset on material loss of the head-neck taper interface of a single trunnion design in retrieval implants of metal on polyethylene bearing surfaces.Methods:A retrieval study was performed to identify all 28-mm and 32-mm femoral heads from a single implant/taper design implanted for >2 years. This included n = 56 of the 28-mm heads and n = 23 of the 32-mm heads. The 28-mm femoral heads were matched to 32-mm femoral heads based on time in vivo and head length. A coordinate measuring machine was used to determine maximum linear corrosion depth (MLD). Differences in MLD for head diameter, stem material, and stem offset were determined.Results:There were no differences between groups for age, gender, BMI, or implantation time. There was no difference in MLD between 28 mm and 32 mm matched paired head diameters ( p = 0.59). There was also no difference in MLD between titanium or cobalt-chromium stems ( p = 0.79), and regular or high-offset stems ( p = 0.95).Conclusion:There is no statistical difference in femoral head MLD at the head-neck junction in THA between 28-mm and 32-mm matched paired femoral heads, similar or mixed alloy coupled femoral head stem constructs, and regular or high offset stems.

Effect of total hip arthroplasty on brake reaction time and braking force

2020 ◽  
pp. 112070002093663
Author(s):  
Henrik C Bäcker ◽  
David Krüger ◽  
Sophie Spies ◽  
Carsten Perka ◽  
Stephanie M Kirschbaum ◽  
...  
Keyword(s):  
Reaction Time ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Driving Experience ◽  
Total Hip ◽  
Emergency Braking ◽  
Before And After ◽  
The Mean ◽  
Braking Force ◽  
The Right

Introduction: The correct moment for return to driving after total hip arthroplasty (THA) remains unclear. Until today no uniform recommendation exists on the ability to perform an emergency brake. The aim of this prospective study was to investigate the braking ability of patients before and after THA implantation based on brake reaction time in milliseconds (BRT) and braking force in N (BF). Methods: In total, 25 patients (15 men, 10 women, mean age 51.3 ± 10.1 years) were treated with THA on the right side. Inclusion criteria consisted of a valid driving licence, frequent road participation and at least 2 years of driving experience. Exclusion criteria were underlying neurological disorders as well as severe complaints in the lumbar spine and the right knee joint. The brake ability was evaluated for emergency braking with a car simulator and a measuring sole. Measurements were performed preoperatively, 6 days, 2, 4 and 6 weeks after surgery. Results: Preoperatively, the mean BRT was 671.3 ± 123.5 ms and the BF 455.4 ± 185.0 N. Significant differences were observed at 6 days and 2 weeks after surgery, (BRT 836.4 ± 219.7 ms, respectively, BRT 735.0 ± 186.7 ms, and BF 302.6 ± 154.9 N, respectively, BF 375.5 ± 149.3 N, p < 0.05). Only 4 weeks after, no significant differences were seen compared to pre-operative with a BRT of 647.0 ± 91.9ms ( p = 0.354) and BF of 435.9 ± 177.4 ( p = 0.843). Furthermore, the BRT improved significantly after 6 weeks (607.4 ± 87.6; p = 0.005). Conclusions: The braking force is significantly reduced, and the brake reaction time is prolonged directly after surgery for at least 2 weeks. After 4 weeks, no statistically significant differences were measured, although special care should still be taken during return to activity.

scholarly journals Work Disability Before and After Total Hip Arthroplasty

1984 ◽  
Vol 27 (4) ◽  
pp. 410-421 ◽  
Author(s):  
Michael C. Nevitt ◽  
Wallace V. Epstein ◽  
Mathias Masem ◽  
William R. Murray
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Work Disability ◽  
Total Hip ◽  
Before And After

Gait Analysis in Adults with Severe Hip Dysplasia before and after Total Hip Arthroplasty

2010 ◽  
Vol 20 (4) ◽  
pp. 466-472 ◽  
Author(s):  
Salih Marangoz ◽  
Bülent Atilla ◽  
Haydar Gök ◽  
Güneş Yavuzer ◽  
Süreyya Ergin ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Gait Analysis ◽  
Hip Arthroplasty ◽  
Hip Dysplasia ◽  
Total Hip ◽  
Before And After
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