title: Endoprosthesis and obesity.
abstract: BACKGROUND
  Obesity represents a significant risk factor in the pathophysiology of degenerative changes in coxarthrosis.
  
  
  OBJECTIVE
  The study aims to investigate obesity as a risk factor in the examined sample comprising 136 patients who underwent hip endoprothesis implantation.
  
  
  METHODS
  The series comprised 136 patients with a hip endoprosthesis implanted, where the patients' BMI, amount of blood used, duration of surgery, number of assistants, and type of anaesthesia were observed. Wounds and late post-operative complications, infections, haemorrhage, vein thrombosis, endoprosthesis dislocations, length of inpatient stay, start of physical therapy and full weight-bearing were also observed. The observation period lasted six months on average.
  
  
  CONCLUSIONS
  In simple terms, the three greatest factors when implanting a hip endoprosthesis are as follows: properties of the endoprosthesis, the orthopaedic surgeon's skill and experience, and individual characteristics of the patient, i.e. age, sex, health condition, body weight, BMI, adequate physical therapy.
  
  
  CONCLUSIONS
  We believe that the implantation of a hip endoprosthesis should be postponed for patients with a BMI exceeding 29.99. Such patients should receive endocrine treatment, they should undergo a weight loss programme in order to reduce their body weight and in order to reduce their BMI to under 29.99.
authors.affiliation: Clinic of Traumatology, Clinical Centre, University of Banja Luka, Bosnia and Herzegovina.
authors.forename: Predrag
authors.initials: P
authors.lastname: Grubor
authors.affiliation: Institute for Physical Medicinu"dr Miroslav Zotovic" of Banja Luka, Bosnia and Herzegovina.
authors.forename: Slavko
authors.initials: S
authors.lastname: Manojlovic
authors.affiliation: School of Medicine, University of Ulm, Germany.
authors.forename: Nemanja
authors.initials: N
authors.lastname: Manojlovic
authors.affiliation: School of Medicine, University of Banja Luka, Bosnia and Herzegovina.
authors.forename: Milan
authors.initials: M
authors.lastname: Grubor
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods; D015992:Body Mass Index; D015897:Comorbidity; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications* / Q000503:physiopathology / Q000601:surgery; D015207:Osteoarthritis, Hip / Q000150:complications* / Q000503:physiopathology / Q000601:surgery*; D011183:Postoperative Complications / Q000517:prevention & control*; D011300:Preoperative Care; D012307:Risk Factors; D061217:Weight Reduction Programs
keywords: endoprosthesis; obesity