Title

Robotic-assisted total knee arthroplasty demonstrates greater component placement accuracy compared with manual instrumentation: initial results of a prospective multicentre evaluation

Reference

Bone Joint J:Orthop Proc. 2020;102-B(Supp_2):43.

Year

2020

Author(s)

Mont M, Kinsey T, Zhang J, et al.

Institutions

Lenox Hill Hospital; The Athens Orthopaedic Clinic; Stryker Orthopaedics; Brigham and Women's Orthopaedic Center; Rothman Institute, NJ; Rothman Institute, PA

Conclusion

This study showed improved accuracy to plan for robotic-arm assisted TKA (RA-TKA) compared to manual TKA. Compared to manual TKA, RA-TKA cases were typically 47% more accurate for tibial component alignment, 59% more accurate for tibial slope, and 36% more accurate for femoral component rotation (percent differences of median absolute deviations from plan).

 

---

 

Title

Robotic-arm assisted total knee arthroplasty demonstrated greater accuracy and precision to plan compared with manual techniques.

Reference

J Knee Surg. 2019;32(3):239-250. doi:10.1055/s-0038-1641729

Year

2019

Author(s)

Hampp EL, Chughtai M, Scholl LY, et al.

Institutions

Cleveland Clinic; Lenox Hill Hospital; CORE Institute

Conclusion

In a cadaveric study that compared RA-TKA to manual TKA (M-TKA), “RA-TKA bone cuts were as or more accurate to plan based on nominal median values in 11 out of 12 measurements. RA-TKA bone cuts were more precise to plan in 8 out of 12 measurements. RA-TKA final component positions were as or more accurate to plan based on median values in five out of five measurements. RA-TKA final component positions were more precise to plan in four out of five measurements... When compared with M-TKA, RA-TKA demonstrated more accurate and precise bone cuts and implant positioning to plan.”

Title

Do total knee arthroplasty surgical instruments influence clinical outcomes? A prospective parallel study of 150 patients.

Reference

Orthopaedic Research Society Annual Meeting; February 2-5, 2019; Austin, TX

Year

2019

Author(s)

Bhowmik-Stoker M, Faizan A, Nevelos JE, Tippett B, Clark G.

Institution(s)

St. John of God, Perth, Australia

Conclusion

Compared to computer-navigated TKA, patients who received RA-TKA had significantly improved postoperative pain, reduced total morphine consumption and a reduced length of stay.

---

 

Title

Robotic-arm assisted total knee arthroplasty is associated with improved early functional recovery and reduced time to hospital discharge compared with conventional jig-based total knee arthroplasty: a prospective cohort study.

Reference

Bone Joint J. 2018;100 B(7):930-937. doi:10.1302/0301- 620X.100B7.BJJ-2017-1449. R1

Year

2018

Author(s)

Kayani B, Konan S, Tahmassebi J, Pietrzak JRT, Haddad FS.

Institution(s)

University College Hospital, London, United Kingdom; Princess Grace Hospital, London, United Kingdom

Conclusion

When comparing robotic-arm assisted TKA to conventional instrumented TKA, RA-TKA was associated with: less postoperative pain, reduced postoperative hemoglobin levels, less time to straight leg raise, fewer inpatient PT sessions, less time to hospital discharge and improved maximum knee flexion at discharge.

 

---

Title

Patient-reported functional and satisfaction outcomes after roboticarm-assisted total knee arthroplasty: early results of a prospective multicenter investigation.

Reference

J Knee Surg. 2020;33(7):685-690. doi:10.1055/s-0039-1684014

Year

2020

Author(s)

Khlopas A, Sodhi N, Hozack WJ, et al.

Institution(s)

Cleveland Clinic; Lenox Hill Hospital; Rothman Institute; Brigham and Women's Hospital; Athens Orthopaedic Clinic

Conclusion

"At 4 to 6 weeks postoperatively, RA-TKA patients were found to have significantly larger improvements in walking and standing (1.4 vs. -1.2 points; p = 0.019)... advanced activities (1.3 vs. 2.3 points), pain with walking (3.3 vs. 3.2 points), satisfaction score (12.4 vs. 12 points), and expectations score (5.1 vs. 4.4 points) when compared with manual TKA patients. At 3 months, RA-TKA patients were also found to have larger improvements in walking and standing (6.0 vs. 4.8 points), standard activities (11.4 vs. 10.1 points), advanced activities (6.2 vs. 4.6 points), functional activities total score (22.8 vs. 21.2 points), pain with walking (4.3 vs. 4.1 points), total symptoms score (10.5 vs. 10.3 points), satisfaction score (17.0 vs. 15.5 points), and expectations score (4.8 vs. 4.0 points) when compared with manual TKA patients."

---

Title

Manipulation under anesthesia rates in technology-assisted versus conventional instrumentation total knee arthroplasty.

Reference

Surg Technol Int. 2020;36:336-340.

Year

2020

Author(s)

Malkani AL, Roche MW, Kolisek FR, et al.

Institutions

University of Louisville; Holy Cross Orthopedic Institute; OrthoIndy; Florida Orthopaedic Institute; The Rothman Institute; Long Island Jewish Medical Center; Northwell Health; Cleveland Clinic; Lenox Hill Hospital

Conclusion

Five fellowship-trained, high-volume surgeons at different institutions performed a total of 188 total knee arthroplasty surgeries using Mako Total Knee. All patients followed similar postoperative rehabilitation starting on postoperative day one. Rates of manipulations under anesthesia (MUAs) were evaluated within and between cohorts. Patients were paired to a consecutive equal number of control patients by each of the specific surgeons for comparison. Additionally, the percent difference of rates was calculated to compare cohorts. All patients were evaluated at a minimum of two-years follow-up time from the index procedure. This study found that patients who underwent roboticassisted TKA experienced a significant, 4.5-fold decrease in rates of manipulation under anesthesia (p=0.032).

Title

Iatrogenic bone and soft tissue trauma in robotic-arm assisted total knee arthroplasty compared with conventional jig-based total knee arthroplasty: a prospective cohort study and validation of a new classification system.

Reference

J Arthroplasty. 2018;33(8):2496- 2501. doi:10.1016/j. arth.2018.03.042

Year

2018

Author(s)

Kayani B, Konan S, Pietrzak JRT, Haddad FS.

Institution(s)

University College Hospital, London, United Kingdom; Princess Grace Hospital, London, United Kingdom

Conclusion

"There was reduced bone and periarticular soft tissue injury” in patients who underwent RA-TKA compared to conventional TKA.

Title

Improved patient satisfaction following robotic-assisted total knee arthroplasty. J Knee Surg. Accepted manuscript.

Reference

Published online November 15, 2019. doi:10.1055/s-0039-1700837

Year

2019

Author(s)

Smith AF, Eccles CJ, Bhimani SJ, et al.

Institution(s)

Kentucky One Health, University of Louisville

Conclusion

One hundred twenty consecutive patients who underwent RA-TKA were compared with a prospective cohort of 103 consecutive patients undergoing TKA with manual jig-based instruments during the same time period. There were no differences between groups with age, gender, baseline Knee Society Score (KSS) knee and function scores, follow-up, and ASA scores. TKAs were performed using same technique, implant design, anesthesia and postoperative treatment protocols. Likert scoring system demonstrated 94% of the patients in the RA-TKA group were either very satisfied or satisfied versus 82% in the manual instruments TKA group (p = 0.005) at one-year follow-up. The RA-TKA group had a better average overall satisfaction score of 7.1 versus 6.6 in the manual instrument group, p = 0.03 at one-year follow-up. KSS function scores for the RA-TKA group were significantly better than those observed in the manual cohort at six weeks and one year postoperatively (p = 0.02, 0.005), and KSS knee scores were significantly better at one year postoperatively (p = 0.046).