Journal Basic Info

  • Impact Factor: 1.995**
  • H-Index: 8
  • ISSN: 2474-1647
  • DOI: 10.25107/2474-1647
**Impact Factor calculated based on Google Scholar Citations. Please contact us for any more details.

Major Scope

  •  Endocrine Surgery
  •  Obstetrics Surgery
  •  Otolaryngology - Head and Neck Surgery
  •  Surgical Oncology
  •  Thoracic Surgery
  •  Cardiovascular Surgery
  •  Orthopaedic Surgery
  •  Breast Surgery


Citation: Clin Surg. 2017;2(1):1309.Research Article | Open Access

Patient Specific Instrumentation (PSI): Early Results in a Danish Orthopaedic Department

Katrine Borum, Thomas Houe, Claus A Olsen and Henrik M Schrøder

Department of Orthopedics, Næstved Medical Hospital, Denmark

*Correspondance to: Katrine Borum 

 PDF  Full Text DOI: 10.25107/2474-1647.1309


Introduction: A new way of improving quality and logistics in Total Knee Athroplasty (TKA) surgery might be Patient-Specific Instrumentation (PSI), providing cutting guides and predetermining component sizes from a MR scan preoperatively.
Methods: A retrospective review of 38 patients operated at Næstved Hospital with a TKA using PSI. All knees were operated between October 2014 and June 2015. We searched the medical records, The Danish Knee Arthroplasty Register and the files from the Zimmer® PSI- online management system.
Results: 42 patients were selected for PSI. 4 patients dropped out. Thus 38 patients were reviewed: 16 men, mean age 66, 1 year (50-82), BMI 29 (21-44), all suffering from osteoarthritis. It took 70, 8 days (32-139) from indication to operation. Intraoperatively, 12 of the 38 (31,6%) operations were converted to conventional technique, because the predetermined size did not fit. 9/12 of the converted patients got larger sizes that pre-planned, equally divided between femoral and tibial components. The converted operations had an operating time of 57, 9 minutes compared to 54, 4 minutes using PSI. In the Danish Knee Arthroplasty Register (2013) the operating time was on average 68 minutes.
Conclusion: With an average time from indication to operation of almost 71 days, and a conversion rate of 31, 6% (12/38), our early results with PSI were not good. However, given proper education of surgeons, the potential logistic advantages warrants further research.


Cite the article

Borum K, Houe T, Olsen CA, Schroder HM. Patient Specific Instrumentation (PSI): Early Results in a Danish Orthopaedic Department. Clin Surg. 2017; 2: 1309.

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