Short-term Clinical Outcomes of Robotic-Arm Assisted Total Hip Arthroplasty: A Pair-Matched Controlled Study

Orthopedics ◽  
2020 ◽  
Author(s):  
Itay Perets ◽  
John P. Walsh ◽  
Brian H. Mu ◽  
Yosif Mansor ◽  
Philip J. Rosinsky ◽  
...  
10.29007/455b ◽  
2018 ◽  
Author(s):  
Itay Perets ◽  
John Walsh ◽  
Brian Mu ◽  
Yosif Mansor ◽  
Leslie Yuen ◽  
...  

Recent advances have made robotic assistance a viable option in total hip arthroplasty (THA). However, the clinical outcomes of this procedure relative to THA without robotic assistance have yet to be reported. This study presents short-term outcomes of robotically assisted THA compared to a pair-matched control group of patients that underwent THA without robotic assistance.Data were prospectively collected on all THAs performed from July 2011 to January 2015. Patients were included if they underwent primary THA treating idiopathic osteoarthritis and were eligible for minimum two-year follow-up. Outcomes were measured using Harris Hip Score (HHS), the Forgotten Joint Score (FJS-12), pain on a visual analog scale (VAS), and satisfaction from 0-10. Patients that underwent THA with robotic assistance were matched 1:1 with THA patients without robotic assistance for age, sex, BMI, and approach.There were 85 patients in each study group. There were no significant differences in the demographic factors matched for. Both HHS and FJS-12 were significantly higher in the robotic assistance group at minimum two-year follow-up. VAS was lower in the robotic assistance group, but this was not statistically significant (p = 0.12). There was a not a significant difference in patient satisfaction. There was no significant difference in the rate of postoperative complications or subsequent revisions between groups.Robotically assisted THA is safe and may lead to superior short-term outcomes compared to THA without robotic assistance.


Author(s):  
Matthew Hepinstall ◽  
Harrison Zucker ◽  
Chelsea Matzko ◽  
Morteza Meftah ◽  
Michael Mont

Introduction: Longevity and success of total hip arthroplasty (THA) is largely dependent on component positioning. While use of robotic platforms can improve this positioning, published evidence on its clinical benefits is limited. Therefore, the aim of this study was to assess the clinical outcomes of THA with robotic surgical assistance. Materials and Methods: We conducted an analysis of robotic arm-assisted primary THAs performed by a single surgeon utilizing a posterior approach. A total of 99 patients (107 cases) who had a minimum two-year follow up were identified. Their mean age was 61 years (range, 33 to 84 years), and their mean body mass index was 30.5 kg/m2 (range, 18.5 to 49.1 kg/m2). There were 56% female patients and primary osteoarthritis was the principal hip diagnosis in 88.8%. Operative times, lengths of hospital stay, and discharge dispositions were recorded, along with any complications. Modified Harris Hip Scores (HHS) were calculated to quantify clinical outcomes. Results: Mean postoperative increases in HHS at 2- to 5.7-year follow up was 33 points (range, 6 to 77 points). There were no complications attributable to the use of robotic assistance. Surgical-site complications were rare; one case underwent a revision for prosthetic joint infection (0.93%) but there were no dislocations, periprosthetic fractures, or cases of mechanical implant loosening. There was no evidence of progressive radiolucencies or radiographic failure. Discussion: Robotic arm-assisted THA resulted in low complication rates at minimum two-year follow up, with clinical outcomes comparable to those reported with manual surgery.1–4 The haptically-guided acetabular bone preparation enabled reliable cementless acetabular fixation and there were no adverse events related to the use of the robot. Dislocations were avoided in this case series. Randomized controlled clinical trials are needed to compare manual to robotic surgery and to investigate whether the precision found with this functional planning will reliably reduce the incidence of dislocations.


2020 ◽  
Author(s):  
Nao Shibanuma ◽  
Kazunari Ishida ◽  
Tomoyuki Matsumoto ◽  
Koji Takayama ◽  
Yutaro Sanada ◽  
...  

Abstract Background The purpose of this study was to compare the clinical outcomes of total hip arthroplasty (THA) using computer navigation systems (nTHA) and those of robotic arm-assisted THA (rTHA).Methods Thirty prospective subjects who underwent rTHA were clinically compared with 30 subjects who underwent nTHA. Clinical data (the surgical time, intraoperative blood loss, length of hospital stay, pain severity, number of days to independent walking, and Harris Hip Score (HHS) at discharge) and radiographic parameters (the inclination and anteversion angles) were statistically compared between the two groups. Results The surgical time, number of days to independent walking, and postoperative pain were significantly reduced in the rTHA group than in the nTHA group. The rTHA group showed a significantly higher postoperative HHS than did the nTHA group. No statistically significant difference was observed in radiographic parameters between the groups.Conclusion The surgical time, postoperative pain, and number of days to independent walking were significantly shorter, and the HHS at discharge was significantly higher in the rTHA group than in the nTHA group. Thus, as compared to nTHA, rTHA improved early clinical outcomes.


2020 ◽  
Vol 30 (6) ◽  
pp. 662-672 ◽  
Author(s):  
Mohamed Sarraj ◽  
Aaron Chen ◽  
Seper Ekhtiari ◽  
Luc Rubinger

Background: The direct anterior approach (DAA) for total hip arthroplasty (THA) was originally performed with a supine patient on a specialised traction table, but the approach can also be performed on a standard operating table. Despite cost and safety implications, there are few studies directly comparing these techniques and table choice remains largely surgeon preference. The purpose of this review was to compare the clinical outcomes and complication profiles of traction and standard table DAA for primary THA. Methods: The authors searched databases for relevant studies, screening in duplicate. Study quality was assessed using MINORS criteria or Cochrane Risk of Bias Tool. Data pertaining to patient demographics, clinical outcomes, and complications were abstracted. Results: Of 3085 initial titles, 44 studies containing a total 26,353 patients were included and analysed. Mean operative time was 70.9 ± 21.2 minutes for standard table ( n = 4402) and 100.1 ± 32.6 minutes for traction table ( n = 3518). Mean estimated blood loss was 382.3 ± 246.4 mL for standard ( n = 2992) and 531.7 ± 364.3 mL for traction table ( n = 2675). Intra-operative fracture rate was 1.3% for standard table ( n = 3940) and 1.7% for traction table ( n = 8386). Complication rates including revisions, dislocations and peri-prosthetic fractures were qualitatively similar between traction and standard table studies. Conclusion: Standard table and traction table DAA have similar outcomes and complications. Both techniques offer the short-term advantages of DAA when compared to other THA approaches. However, the standard table technique may offer perioperative advantages including decreased blood loss, shorter operative time, and fewer intraoperative fractures. In the context of rising global healthcare costs and lack of access to specialised orthopaedic traction tables, this review at minimum confirms the short-term safety of standard table DAA THA and prompts the need for future studies to directly compare these techniques.


Author(s):  
Aaron Gazendam ◽  
Anthony Bozzo ◽  
Seper Ekhtiari ◽  
Colin Kruse ◽  
Nancy Hiasat ◽  
...  

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Taku Ukai ◽  
Goro Ebihara ◽  
Masahiko Watanabe

Abstract Background This study aims to evaluate postoperative pain and functional and clinical outcomes of anterolateral supine (ALS) and posterolateral (PL) approaches for primary total hip arthroplasty. Materials and methods We retrospectively examined the joints of 110 patients who underwent primary total hip arthroplasty (THA). The ALS group was compared with the PL group using the pain visual analog scale (VAS) and narcotic consumption as pain outcomes. Functional outcomes included postoperative range of motion (ROM) of hip flexion, day on which patients could perform straight leg raising (SLR), day on which patients began using a walker or cane, duration of hospital stay, rate of transfer, and strength of hip muscles. Clinical outcomes included pre and postoperative Harris Hip Scores. Results No significant differences were found in the pain VAS scores or narcotic consumption between the two groups. The PL group could perform SLR earlier than the ALS group (P < 0.01). The ALS group started using a cane earlier (P < 0.01) and had a shorter hospital stay (P < 0.01) than the PL group. Degrees of active ROM of flexion at postoperative day (POD) 1 were significantly lower in the ALS group than in the PL group (P < 0.01). Regarding hip muscle strength, hip flexion was significantly weaker in the ALS group than in the PL group until 1-month POD (P < 0.01). External rotation from 2 weeks to 6 months postoperatively was significantly weaker in the PL group than in the ALS group (P < 0.01). Conclusion The ALS approach was more beneficial than the PL approach because ALS enabled better functional recovery of the strength of external rotation, improved rehabilitation, and involved a shorter hospital stay. Level of Evidence Level IV retrospective observational study.


2020 ◽  
pp. 112070002096964
Author(s):  
Kirill Gromov ◽  
Nanna H Sillesen ◽  
Thomas Kallemose ◽  
Henrik Husted ◽  
Henrik Malchau ◽  
...  

Background: Introduction of new implants should be monitored closely to capture any signs of compromising patient safety. Vitamin E infused highly-crosslinked polyethylene liners (VEPE) offer the potential for reduced wear. Highwall liners have been hypothesised to result in increased wear and potential liner fractures. The aim of this study was to determine the 3–7-year follow-up of highwall VEPE for primary total hip arthroplasty (THA), focusing on liner-related complications. Methods: We included 1221 consecutive THA operations from July 2010 to May 2014 with minimum follow-up of 3 (3.1–6.8) years Data collected included demographics, implant data, complications, reoperations, and deaths. Data were cross-referenced with the Danish Hip Arthroplasty Registry in order to ensure validity and completeness. Acetabular shell position was measured using Martell Hip Analysis Suite in a subgroup of 931 THAs. Results: Cumulative stem revision and shell revision at 3-year follow-up was 3.4% and 0.4% respectively. There were no revisions due to liner failure. Reason for revision included 11 dislocations, 15 soft-tissue revisions for infection, 44 stem revisions of which 34 were periprosthetic fractures and 13 shell revisions of which 6 were combined shell and stem revisions. Conclusion: Early follow-up of VEPE liners for primary THA have not shown any revisions associated with liner failure. Continued monitoring of new materials are necessary to capture any signs of compromised patient safety.


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