head JofIMAB
Journal of IMAB - Annual Proceeding (Scientific Papers)
Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2022, vol. 28, issue1
Subject Area: Medicine
DOI: 10.5272/jimab.2022281.4316
Published online: 28 March 2022

Original article
J of IMAB. 2022 Jan-Mar;28(1):4316-4321
Stanislav Karamitev1ORCID logo, Stoyan Ivanov2ORCID logo Corresponding Autoremail, Vihur Kovachev3,
1) Department of Orthopedics and Traumatology, Faculty of Medicine, Medical University Plovdiv, Bulgaria.
2) Department of Orthopedics and Traumatology, Faculty of Medicine, Medical University Varna, Bulgaria.
3) Department of Orthopedics and Traumatology, Faculty of Medicine, Medical University Pleven, Bulgaria.

Purpose: the aim of the present study is to evaluate the intra- and postoperative complications following unicondylar knee arthroplasty and subsequent outcome.
Material and methods: For the period from 2008 to 2018, we operated on 450 patients with isolated osteoarthritis of the knee joint. In the majority of cases, patients had arthrosis of the medial compartment of the joint due to antero-medial osteoarthritis or osteonecrosis and, in smaller percentage, osteoarthritis in the lateral part of the joint.
Results: Various complications were registered which we divided into intraoperative and postoperative, monitoring during the follow-up of patients. Intraoperative include fracture of the tibial plateau during implantation of the component, partial resection of the intercondylar eminence during the preparation of the tibial plateau, incorrect hole placement in the femoral condyle, which led to malalignment positioning of the femoral component in varus or valgus, resection of more bone substance from the tibia leading to subsidence of the implanted component.
The postoperative complications include: aseptic loosening, polyethylene wear, impingement, progression of osteoarthritis in the opposite part of the knee joint, periprosthetic infection and arthrofibrosis.
Conclusion: Unicompartmental knee arthroplasty is a minimally invasive procedure for the treatment of isolated osteoarthritis of the knee joint and is associated with excellent and good long-term results. Complications could be reduced by using a meticulous surgical technique, selection of suitable implants and last but not least proper indications for surgery.

Keywords: osteoarthritis of the knee joint, unicondylar knee arthroplasty, complications,

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Please cite this article as: Karamitev S, Ivanov S, Kovachev V. Analysis of complications following unicompartmental knee arthroplasty. J of IMAB. 2022 Jan-Mar;28(1):4316-4321.
DOI: 10.5272/jimab.2022281.4316

Corresponding AutorCorrespondence to: Stoyan Ivanov, Department of Orthopedics and Traumatology, Faculty Medicine, Medical University Varna, Bulgaria; E-mail: ton_ivanov@abv.bg

1. Karamitev St. (Editor), Painful unicondyllar knee arthroplasty [Unicondyle knee arthroplasty] [in Bulgarian] Makros, Plovdiv, 2011: 117-122
2. Kinov P, Stoyanov V, Hadzhiev D, Georgiev G. Results after unicondylar knee joint replacement. BUL J ORTOP TRAUMA. Ortopediya i Travmatologiya. 2017; 54(1):26-30.
3. Tanchev P, Antonov B, Belitova M, Kinov P. Bi-unicondyllar knee arthroplasty with anterior cruciate ligament reconstruction - a clinical case. BUL J ORTOP TRAUMA. Ortopediya i Travmatologiya. 2020; 57(2):87-93.
4. Berger RA, Della Valle CJ. Unicompartmental knee arthroplasty: indications, techniques, and results. Instr Course Lect. 2010; 59:47-56. [PubMed]
5. Di Martino A, Bordini B, Barile F, Ancarani C, Digennaro V, Faldini C. Unicompartmental knee arthroplasty has higher revisions than total knee arthroplasty at long term follow-up: a registry study on 6453 prostheses. Knee Surg Sports Traumatol Arthrosc. 2021 Oct;29(10):3323-3329. [PubMed]
6. Epinette JA, Brunschweiler B, Mertl P, Mole D, Cazenave A; French Society for Hip and Knee. Unicompartmental knee arthroplasty modes of failure: wear is not the main reason for failure: a multicentre study of 418 failed knees. Orthop Traumatol Surg Res. 2012 Oct;98(6 Suppl):S124-30. [PubMed]
7. Hamilton WG, Collier MB, Tarabee E, McAuley JP, Engh CA Jr, Engh GA. Incidence and reasons for reoperation after minimally invasive unicompartmental knee arthroplasty. J Arthroplasty. 2006 Sep;21(6 Suppl 2):98-107. [PubMed]
8. Ivanov S. Cannulated screw fixation for dislocated fractures of the calcaneus. Scripta Scientifica Medica. 2019; 51(2):23-29. [Crossref]
9. Minchev Pl, Vasilev B, Spasov K, Morfov St. Gunshot bone damages on the extremities. BUL J ORTOP TRAUMA. Ortopediya i Travmatologiya. 2020; 57(3):146-156.
10. Petersson IF, Boegård T, Saxne T, Silman AJ, Svensson B. Radiographic osteoarthritis of the knee classified by the Ahlbäck and Kellgren & Lawrence systems for the tibiofemoral joint in people aged 35-54 years with chronic knee pain. Ann Rheum Dis. 1997 Aug;56(8):493-6. [PubMed]
11. Kozinn SC, Scott R. Unicondylar knee arthroplasty. J Bone Joint Surg Am. 1989 Jan;71(1):145-150. [PubMed]
12. Morris MJ, Molli RG, Berend KR, Lombardi AV Jr. Mortality and perioperative complications after unicompartmental knee arthroplasty. Knee. 2013 Jun;20(3):218-20. [PubMed]
13. Nettrour JF, Ellis RT, Hansen BJ, Keeney JA. High Failure Rates for Unicompartmental Knee Arthroplasty in Morbidly Obese Patients: A Two-Year Minimum Follow-Up Study. J Arthroplasty. 2020 Apr;35(4):989-996. [PubMed]
14. Pandit H, Jenkins C, Gill HS, Barker K, Dodd CA, Murray DW. Minimally invasive Oxford phase 3 unicompartmental knee replacement: results of 1000 cases. J Bone Joint Surg Br. 2011 Feb;93(2):198-204. [PubMed]
15. Peersman G, Stuyts B, Vandenlangenbergh T, Cartier P, Fennema P. Fixed- versus mobile-bearing UKA: a systematic review and meta-analysis. Knee Surg Sports Traumatol Arthrosc. 2015 Nov;23(11):3296-3305. [PubMed]
16. Ivanova N, Yaneva G, Ivanov D. Characteristics of autologous platelet-rich plasma concentrates obtained by the buffy coat technique using different protocols. Scripta Scientifica Pharmaceutica. 2021; 8(1).
17. Ko YB, Gujarathi MR, Oh KJ. Outcome of Unicompartmental Knee Arthroplasty: A Systematic Review of Comparative Studies between Fixed and Mobile Bearings Focusing on Complications. Knee Surg Relat Res. 2015 Sep;27(3):141-8. [PubMed]
18. Karamitev SS, Stavrev VP, Chifligarov AG. Comparative analysis of the results obtained after unicondylar knee arthroplasty and high tibial osteotomy in isolated gonarthrosis. Folia Med (Plovdiv). 2014 Jan-Mar;56(1):11-9. [PubMed]
19. Lyons MC, MacDonald SJ, Somerville LE, Naudie DD, McCalden RW. Unicompartmental versus total knee arthroplasty database analysis: is there a winner?. Clin Orthop Relat Res. 2012 Jan;470(1):84-90. [PubMed].

Received: 26 July 2021
Published online: 29 March 2022

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