An increased body mass index was not associated with higher rates of 30-day postoperative complications after unicompartmental knee arthroplasty

Abstract Background The primary purpose of the present prospective study was to consecutively analyse the outcomes of the return to sports activity of patients with positive patch tests undergoing a medial mobile-bearing titanium niobium nitride (TiNbN) unicompartmental knee arthroplasty (UKA). The secondary purpose was to ascertain if a higher grade of physical activity leads to a reduction in the body mass index (BMI) of the patients. Material and methods Forty-one patients with positive skin patch tests were included in this prospective study. The clinical evaluation consisted of the University of California, Los Angeles (UCLA) activity scale and the High-Activity Arthroplasty Score (HAAS). Each patient was evaluated the day before surgery (T0), after 12.37 ± 0.70 months (T1), and on the day of the final follow-up, after 67.03 ± 18.2 months (T2). Furthermore, the BMI of each patient was analysed before surgery and during the final follow-up. Results The UCLA and HAAS mean preoperative values ranged from 3.68 ± 1.1.7 and 6.15 ± 0.76 to 6.1 ± 0.76 and 10.34 ± 1.3, respectively, at T1 (p < 0.0001) and to the final values of 6.34 ± 0.62 and 11.0 ± 8.9, respectively, at T2 (UCLA: T2 versus T1: p = 0.132; T2 versus T0: p < 0.0001; HAAS: T2 versus T1: p = 0.0027; T2 versus T0: p < 0.001). BMI ranged from a preoperative value of 27.97 ± 3.63 to a final value of 26.84 ± 3.11 (p < 0.0001). The only differences within the subgroups concerned patients with BMI ≥ 28, showing a superior HAAS at each follow-up (p < 0.05). A positive correlation was found between BMI and HAAS at T0 and T2 (p < 0.05). Conclusions This is the first study to evaluate the rate of the return to sports activities and change in BMI following hypoallergenic UKA. The majority of patients reduced their weight following UKA and improved their physical activity, showing outcomes that were comparable to the standard cobalt–chrome (CoCr) prostheses, regardless of gender, age, BMI and implant size. Level of evidence IV – Prospective Cohort Study. Trial registration researchregistry5978—Research Registry www.researchregistry.com

Download Full-text

Operative Duration and Short-Term Postoperative Complications after Unicompartmental Knee Arthroplasty

The Journal of Arthroplasty ◽

10.1016/j.arth.2020.09.007 ◽

2020 ◽

Author(s):

Michael B. Held ◽

Venkat Boddapati ◽

Nana O. Sarpong ◽

Herbert J. Cooper ◽

Roshan P. Shah ◽

...

Keyword(s):

Postoperative Complications ◽

Knee Arthroplasty ◽

Unicompartmental Knee Arthroplasty ◽

Short Term ◽

Operative Duration ◽

Unicompartmental Knee

Download Full-text

Body Mass Index More Than 45 kg/m2 as a Cutoff Point Is Associated With Dramatically Increased Postoperative Complications in Total Knee Arthroplasty and Total Hip Arthroplasty

The Journal of Arthroplasty ◽

10.1016/j.arth.2015.10.042 ◽

2016 ◽

Vol 31 (4) ◽

pp. 749-753 ◽

Cited By ~ 36

Author(s):

Sanjib D. Adhikary ◽

Wai-Man Liu ◽

Stavros G. Memtsoudis ◽

Charles M. Davis ◽

Jiabin Liu

Keyword(s):

Body Mass Index ◽

Total Knee Arthroplasty ◽

Postoperative Complications ◽

Total Hip Arthroplasty ◽

Body Mass ◽

Knee Arthroplasty ◽

Hip Arthroplasty ◽

Cutoff Point ◽

Total Hip ◽

Total Knee

Download Full-text

An assessment of early functional rehabilitation and hospital discharge in conventional versus robotic-arm assisted unicompartmental knee arthroplasty

The Bone & Joint Journal ◽

10.1302/0301-620x.101b1.bjj-2018-0564.r2 ◽

2019 ◽

Vol 101-B (1) ◽

pp. 24-33 ◽

Cited By ~ 33

Author(s):

B. Kayani ◽

S. Konan ◽

J. Tahmassebi ◽

F. E. Rowan ◽

F. S. Haddad

Keyword(s):

Postoperative Pain ◽

Postoperative Complications ◽

Hospital Discharge ◽

Knee Arthroplasty ◽

Unicompartmental Knee Arthroplasty ◽

Rating Scale ◽

Numerical Rating Scale ◽

Robotic Arm ◽

Functional Rehabilitation ◽

Unicompartmental Knee

Aims The objectives of this study were to compare postoperative pain, analgesia requirements, inpatient functional rehabilitation, time to hospital discharge, and complications in patients undergoing conventional jig-based unicompartmental knee arthroplasty (UKA) versus robotic-arm assisted UKA. Patients and Methods This prospective cohort study included 146 patients with symptomatic medial compartment knee osteoarthritis undergoing primary UKA performed by a single surgeon. This included 73 consecutive patients undergoing conventional jig-based mobile bearing UKA, followed by 73 consecutive patients receiving robotic-arm assisted fixed bearing UKA. All surgical procedures were performed using the standard medial parapatellar approach for UKA, and all patients underwent the same postoperative rehabilitation programme. Postoperative pain scores on the numerical rating scale and opiate analgesia consumption were recorded until discharge. Time to attainment of predefined functional rehabilitation outcomes, hospital discharge, and postoperative complications were recorded by independent observers. Results Robotic-arm assisted UKA was associated with reduced postoperative pain (p < 0.001), decreased opiate analgesia requirements (p < 0.001), shorter time to straight leg raise (p < 0.001), decreased number of physiotherapy sessions (p < 0.001), and increased maximum knee flexion at discharge (p < 0.001) compared with conventional jig-based UKA. Mean time to hospital discharge was reduced in robotic UKA compared with conventional UKA (42.5 hours (sd 5.9) vs 71.1 hours (sd 14.6), respectively; p < 0.001). There was no difference in postoperative complications between the two groups within 90 days’ follow-up. Conclusion Robotic-arm assisted UKA was associated with decreased postoperative pain, reduced opiate analgesia requirements, improved early functional rehabilitation, and shorter time to hospital discharge compared with conventional jig-based UKA.

Download Full-text