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. 2023 May 22;16(1):86.
doi: 10.1186/s13104-023-06345-8.

Early muscle recovery following robotic-assisted unicompartmental knee arthroplasty

Emma Moon  1 , Paul Gaston  2 , James T Patton  2 , Allison Bell  1 , Philip M Simpson  2 , Gavin J MacPherson  2 , David F Hamilton  3
Affiliations

Early muscle recovery following robotic-assisted unicompartmental knee arthroplasty

Emma Moon et al. BMC Res Notes. .

Abstract

Background: Robotic-assisted unicompartmental knee arthroplasty (UKA) improves implant accuracy, however whether this translates to patient function is less clear. Various outcomes have been reported but muscle recovery has not been previously investigated.

Objective: To explore sequential change in lower limb muscle strength following robotic-assisted UKA with isokinetic dynamometry.

Results: 12 participants undergoing rUKA for medial compartment osteoarthritis were assessed pre-operatively, and at 6- and 12-weeks post-operatively. Maximal muscle strength changed over time in both quadriceps (p = 0.006) and hamstrings (p = 0.018) muscle groups. Quadriceps strength reduced from 88.52(39.86)Nm to 74.47(27.58)Nm by 6-weeks (p = 0.026), and then recovered to 90.41(38.76)Nm by 12-weeks (p = 0.018). Hamstring strength reduced from 62.45(23.18)Nm to 54.12(20.49)Nm by 6-weeks (p = 0.016), and then recovered to 55.07(17.99)Nm by 12-weeks (p = 0.028). By 12-weeks quadriceps strength was 70% and hamstrings 83% of the values achieved in the un-operated limb. Substantial improvement was seen in all other measures over time, with sequential positive change in Timed-up-and-go test (p = 0.015), 10 m walk test (p = 0.021), range of knee flexion (p = 0.016) and PROMs (p < 0.025).

Keywords: Isokinetic dynamometry; Robotic-assisted surgery; Robotics; Unicompartmental knee replacement.

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Conflict of interest statement

DFH reports funding as PI from Stryker (directly related) and personal payment for preparation of educational material and speakers fees from Stryker (unrelated). JTP, PS and GMP reports personal payment for preparation of educational material and speakers fees from Stryker (directly related and unrelated). PG, EM and AB report no competing interests.

References

    1. Wilson HA, Middleton R, Abram SGF, Smith S, Alvand A, Jackson W, et al. Patient relevant outcomes of unicompartmental versus total knee replacement: systematic review and meta-analysis. BMJ. 2019;364:1352. - PMC - PubMed
    1. National Joint Registry for England and Wales and Northern Ireland 16th Annual Report 2019. 2019. http//www.njrcentre.org.uk.
    1. Zuiderbaan HA, van der List JP, Khamaisy S, Nawabi DH, Thein R, Ishmeal C, et al. Unicompartmental knee arthroplasty versus total knee arthroplasty: which type of artificial joint do patients forget? Arthrosc: Knee Surgery, Sports Traumatol; 2017. pp. 681–6. - PubMed
    1. Liddle AD, Judge A, Pandit H, Murray DW. Adverse outcomes after total and unicompartmental knee replacements in 101330 matched patients: a study of data from the National Joint Registry of England and Wales. Lancet. 2014;384:1437–45. doi: 10.1016/S0140-6736(14)60419-0. - DOI - PubMed
    1. Clement ND, Bell A, Simpson P, Macpherson G, Patton J, Hamilton DF. (2020): Robotic-assisted unicompartmental knee arthroplasty has a greater early functional outcome when compared to manual total knee arthroplasty for isolated medial compartment arthritis. Bone Joint Res, 9(1) - PMC - PubMed