Konstantinos Malizos

Konstantinos Malizos


Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2018 in Clinical Interventions in Aging
Verified
Journal Article
Open access
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KAKonstantinos Alexiou
Konstantinos Alexiou
ARAndreas Roushias
Andreas Roushias
SVSokratis Varitimidis
Sokratis Varitimidis
KMKonstantinos Malizos
Konstantinos Malizos
Fractures due to fragility of the bone around the hip joint have become a major public health issue, presenting with an increasing incidence due to the growth of the elderly population. The purpose of this review was to evaluate the impact of hip fractures on the quality of life (QoL), health status (HS), functioning, and psychological parameters, and factors influencing the outcome and the appropriate interventions for improvement of elderly patients. A systematic electronic search of the relevant literature was carried out using the CINAHL, Cochrane, EMBASE, Medline (OvidSP), and PubMed databases spanning the time period from their establishment up to January 2017. Forty-nine randomized controlled trials or prospective cohort studies reporting the QoL and psychological outcomes were assessed by using standardized questionnaires. Patients with a hip fracture who were older than 65 years, were included in the analysis. In the majority of elderly patients, the hip fracture seriously affected physical and mental functioning and exerted a severe impact on their HS and health-related QoL (HRQoL). Moreover, most of the patients did not return to prefracture levels of performance regarding both the parameters. The levels of mental, physical, and nutritional status, prior to the fracture, comorbidity, and female gender, in addition to the postoperative pain, complications, and the length of hospital stay, were the factors associated with the outcome. Psychosocial factors and symptoms of depression could increase pain severity and emotional distress. For the displaced femoral neck fractures, the treatment with total hip arthroplasty or hemiarthroplasty, when compared to the treatment with internal fixation, provided a better functional outcome. Supportive rehabilitation programs, complemented by psychotherapy and nutritional supplementation prior to and after surgery, provided beneficial effects on the HS and the psychosocial dimension of the more debilitated patients’ lives. Lack of consensus ­concerning the most appropriate HRQoL questionnaires to screen and identify those patients with more difficulties in the psychosocial functions, demonstrates the necessity for further research to assess the newer outcome measurement tools, which might improve our understanding for better care of patients with hip fractures.

1 July 2007 in European Journal of Radiology
Verified
Journal Article
Closed access
KMKonstantinos Malizos
Konstantinos Malizos
AKApostolos H. Karantanas
Apostolos H. Karantanas
SVSokratis E. Varitimidis
Sokratis E. Varitimidis
ZDZoe H. Dailiana
Zoe H. Dailiana
KBKonstantinos Bargiotas
Konstantinos Bargiotas
TMThomas Maris
Thomas Maris

1 November 2005 in Injury
Verified
Journal Article
Closed access
KMKonstantinos Malizos
Konstantinos Malizos
LPLoukia K. Papatheodorou
Loukia K. Papatheodorou

2 February 2017 in Journal of Orthopaedics and Traumatology
Verified
Journal Article
Open access
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KMKonstantinos Malizos
Konstantinos Malizos
MBMichael Blauth
Michael Blauth
ADAdrian Danita
Adrian Danita
NCNicola Capuano
Nicola Capuano
RMRiccardo Mezzoprete
Riccardo Mezzoprete
CRCARLO ROMANO
CARLO ROMANO
Background Infection is one of the main reasons for failure of orthopedic implants. Antibacterial coatings may prevent bacterial adhesion and biofilm formation, according to various preclinical studies. The aim of the present study is to report the first clinical trial on an antibiotic-loaded fast-resorbable hydrogel coating (Defensive Antibacterial Coating, DAC®) to prevent surgical site infection, in patients undergoing internal osteosynthesis for closed fractures. Materials and methods In this multicenter randomized controlled prospective study, a total of 256 patients in five European orthopedic centers who were scheduled to receive osteosynthesis for a closed fracture, were randomly assigned to receive antibiotic-loaded DAC or to a control group (without coating). Pre- and postoperative assessment of laboratory tests, wound healing, clinical scores and X-rays were performed at fixed time intervals. Results Overall, 253 patients were available with a mean follow-up of 18.1 ± 4.5 months (range 12–30). On average, wound healing, clinical scores, laboratory tests and radiographic findings did not show any significant difference between the two groups. Six surgical site infections (4.6%) were observed in the control group compared to none in the treated group (P < 0.03). No local or systemic side-effects related to the DAC hydrogel product were observed and no detectable interference with bone healing was noted. Conclusions The use of a fast-resorbable antibiotic-loaded hydrogel implant coating provides a reduced rate of post-surgical site infections after internal osteosynthesis for closed fractures, without any detectable adverse event or side-effects. Level of evidence 2.

29 June 2012 in BMC Musculoskeletal Disorders
Verified
Journal Article
Open access
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IPIppolyti Papakostidou
Ippolyti Papakostidou
ZDZoe H Dailiana
Zoe H Dailiana
TPTheodoros Papapolychroniou
Theodoros Papapolychroniou
LLLycurgos Liaropoulos
Lycurgos Liaropoulos
EZElias Zintzaras
Elias Zintzaras
KMKonstantinos Malizos
Konstantinos Malizos
Background: The purpose of the study is to evaluate the self-reported outcomes in the first year after primary total knee arthroplasty (TKA), and to determine factors influencing the quality of life (QoL) 6 weeks, 3, 6, and 12 months after TKA.Methods: A cohort of patients with knee osteoarthritis undergoing primary TKA at two hospitals (a regional university hospital and a capital’s metropolitan hospital) was prospectively followed for 12 months. Patients were assessed preoperatively and at 4 postoperative time-points, with the use of self-reported measurements for pain, physical function and depression with the following evaluation tools: Western Ontario and McMaster Osteoarthritis Index [WOMAC], Knee Society Scoring system [KSS], Centre for Epidemiological Studies Depression Scale, [CES-D10] and visual analog scale [VAS] for pain). General linear modelling for repeated measures was used to evaluate the effect of each independent variable including clinical and sociodemographic data. Differences between groups at different time points were tested by the independent samples t-test.Results: Of the 224 eligible patients, 204 (162 females, mean age 69.2) were included in the analysis. Response rate at one year was 90%. At 6 weeks after surgery, despite improvement in pain and alleviation of the depressive mood, the physical function remained less satisfactory. Females presented lower scores in terms of quality of life, both preoperatively and 6 weeks after TKA. Significant improvement was already experienced at 3 months postoperatively. According to WOMAC, KSS, CES-D10 and pain VAS scores the Qol was significantly improved 12 months after TKA (P < 0.001). CES-D10 score was positively correlated with WOMAC and pain VAS scores at all the time points assessed (P < 0.001). Age, body mass index (BMI), place of residence, level of education and social support were not significant predictors of QoL after TKA.Conclusions: Patients experienced great improvement in their QoL after TKA in spite of a less satisfactory physical function in the first 6 weeks after surgery, with noticeable differences in the QoL among genders in the same time period. After that period all patients experienced significant improvement for all the measured parameters, until the third postoperative month with smaller changes thereafter.

26 November 2015 in BMC Musculoskeletal Disorders
Verified
Journal Article
Open access
PDF file
ZDZoe H. Dailiana
Zoe H. Dailiana
IPIppolyti Papakostidou
Ippolyti Papakostidou
SVSokratis Varitimidis
Sokratis Varitimidis
LLLycurgos Liaropoulos
Lycurgos Liaropoulos
EZElias Zintzaras
Elias Zintzaras
KMKonstantinos Malizos
Konstantinos Malizos
To investigate and compare the impact of primary hip (THA) and knee (TKA) arthroplasty on quality of life in patients with osteoarthritis, to determine patients’ satisfaction with total joint arthroplasty, and to detect the effect of patients’ demographic and clinical characteristics on outcome. Three hundred seventy eight (378) patients with hip (174) and knee (204) osteoarthritis undergoing total joint arthroplasty (174 THA-204 TKA) were assessed pre- and post-operatively (6 weeks, 3, 6, and 12 months) using the Western Ontario and McMaster Osteoarthritis Index (WOMAC) and Centre for Epidemiological Studies Depression Scale (CES-D10). The patients’ satisfaction with the results of total joint arthroplasty was also assessed. Differences were analyzed using general linear model for repeated measures. The one-year response rate was 97 % for THA and 90 % for TKA. WOMAC and CES-D10 scores improved significantly after one year for both THA and TKA (P < 0.0001). The improvement in WOMAC total score was significantly greater for TKA patients (P < 0.0001 at 12 months). WOMAC pain and stiffness improved earlier for THA (6 weeks), while TKA had equivalent improvements at 3 and 6 months respectively. Both THA/TKA displayed significant improvement of WOMAC function at 3 months but TKA had greater improvement. Age, body mass index, residence, education and social support were not significant predictors of quality of life after total joint arthroplasty. One year postoperatively 88 % of patients were satisfied. WOMAC and CES-D10 improved significantly one year postoperatively. Although pain and stiffness improved earlier in THA, functional improvement was inferior in THA compared to TKA.