Development of a Surgical Robot for Cementless Total Hip Arthroplasty

Paul, H.A.; Bargar, William L.; Mittlestadt, B.; Musits, B.L.; Taylor, Russell H.; Kazanzides, Peter; Zuhars, J.; Williamson, Bill; Hanson, William A.

doi:10.1097/00003086-199212000-00010

Cited by 246 publications

(123 citation statements)

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“…With the use of robotic system, the intraoperative fractures are rare (Bargar et al, 1998;Jerosch et al, 1999;Paul et al, 1992). Bargar et al reported the result of one ongoing study in the USA, which included 134 hips (69 of robotic system and 65 of control).…”

Section: Discussionmentioning

confidence: 99%

The dimensional accuracy of preparation of femoral cavity in cementless total hip arthroplasty

Hahne

Hassenpflug

2004

J. Zheijang Univ.-Sci.

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Abstract:Objective: To observe the accuracy of femoral preparation and the position of the cementless prosthesis in femoral cavity, and to compare the results between the computer-assisted surgical group (CASPAR) and the conventional group. Methods: Ten femoral components were implanted either manually or by CASPAR in cadaver femurs. The specimens were cut to 3 mm thick slices. Microradiograms of every slice were sent to a computer for analysis with special software (IDL). The gaps and the medullary cavities between component and bone, the direct bone contact area of the implant surface, the gap width and the percentage of gap and bone contact area were measured in every slice. Results: In the proximal implant coated with HA of the CASPAR group, the average percentage of bone contact reached 93.2% (ranging from 87.6% to 99.7%); the average gap percentage was 2.9% (ranging from 0.3% to 7.8%); the maximum gap width was 0.81 mm and the average gap width was only 0.20 mm. While in the conventional group, the average percentage of bone contact reached 60.1% (ranging from 49.2% to 70.4%); the average gap percentage was 32.8% (ranging from 25.1% to 39.9%); the maximum gap width was 2.97 mm and the average gap width was 0.77 mm. The average gap around the implant in the CASPAR group was only 9% of that in the manual group; the maximum and average gap widths were only about 26% of those in the manual group. On the other hand, the CASPAR group showed 33% higher bone contact than the manual group. Conclusion: With the use of robotics-assisted system, significant progress can be achieved for femoral preparation in total hip arthroplasty.

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Section: Discussionmentioning

confidence: 99%

The dimensional accuracy of preparation of femoral cavity in cementless total hip arthroplasty

Hahne

Hassenpflug

2004

J. Zheijang Univ.-Sci.

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“…Clinical use of this system began in 1992 [20]. The US Food and Drug Administration authorized a multicenter study starting in 1994.…”

Section: Introductionmentioning

confidence: 99%

A Comparison between Robotic-assisted and Manual Implantation of Cementless Total Hip Arthroplasty

Nakamura

Sugano

Nishii

et al. 2010

Clinical Orthopaedics &Amp; Related Research

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Background The benefits of robotic techniques for implanting femoral components during THA are still controversial. Questions/Purposes The purpose of this study was to prospectively compare the results and complications of robotic-assisted and hand-rasping stem implantation techniques. Method The minimum followup was 5 years (mean, 67 months; range, 60-85 months). One hundred forty-six primary THAs on 130 patients were included in this study. Robot-assisted primary THA was performed on 75 hips and a hand-rasping technique was used on 71 hips.

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“…A solid impermeable titanium alloy implant served as control. Two surgical fittings (exact and gap) were applied to mimic the clinical setting, where implants, even though inserted with press fit, initially have large areas without bone-implant contact [14,20].…”

Section: Introductionmentioning

confidence: 99%

Particle migration and gap healing around trabecular metal implants

Rahbek

Kold

Zippor

et al. 2005

International Orthopaedics (SICO

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Bone on-growth and peri-implant migration of polyethylene particles were studied in an experimental setting using trabecular metal and solid metal implants. Cylindrical implants of trabecular tantalum metal and solid titanium alloy implants with a glass bead blasted surface were inserted either in an exact surgical fit or with a periimplant gap into a canine knee joint. We used a randomised paired design. Polyethylene particles were injected into the knee joint. In both types of surgical fit we found that the trabecular metal implants had superior bone ongrowth in comparison with solid metal implants (exact fit: 23% vs. 7% [p=0.02], peri-implant gap: 13% vs. 0% [p=0.02]. The number of peri-implant polyethylene particles was significantly reduced around the trabecular metal implants with a peri-implant gap compared with solid implants.Résumé Dans un cadre expérimental, nous avons étudié la réhabitation osseuse et la migration péri-implant de particules de polyéthylène en utilisant des implants en métal trabéculaire et des implants en métal massif. Des implants cylindriques de tantale trabéculaire et des implants en alliage de titane massif avec traitement de surface ont été inséré avec une adaptation exacte ou avec un espace péri-implant dans des genoux de chiens. Nous avons utilisé une forme randomisée par paire. Des particules de polyéthylène ont été injectées dans le genou. Dans les deux types d'implantation nous avons trouvé que les implants en métal trabéculaire avaient une réhabitation osseuse supérieure en comparaison des implants en métal massif. Le nombre de particules de polyéthylène était notablement réduit autour de l'implant en métal trabéculaire avec un intervalle péri-implant comparé aux implants en métal massif.

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Development of a Surgical Robot for Cementless Total Hip Arthroplasty

Cited by 246 publications

References 0 publications

The dimensional accuracy of preparation of femoral cavity in cementless total hip arthroplasty

The dimensional accuracy of preparation of femoral cavity in cementless total hip arthroplasty

A Comparison between Robotic-assisted and Manual Implantation of Cementless Total Hip Arthroplasty

Particle migration and gap healing around trabecular metal implants

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