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Year : 2013  |  Volume : 47  |  Issue : 1  |  Page : 31-34

Midterm results of cruciate retaining total knee arthroplasty in patellectomized patients

Department of Orthopaedics, Medanta Bone and Joint Institute, Medanta, the Medicity Sector 38, Gurgaon, Haryana, India

Correspondence Address:
Vivek Dahiya
Department of Orthopaedics, Medanta Bone and Joint Institute, Medanta, the Medicity, Sector 38, Gurgaon, Haryana
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0019-5413.106891

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Background : Total knee arthroplasty (TKA) in patellectomized patients gives inferior results when compared with those in which the patella is present. The literature is ambiguous about the role of cruciate retaining or sacrificing implants for these knees. In this study, we assessed the midterm results of TKA in patellectomized knees using a cruciate retaining implant. Materials and Methods: Thirty three patients with a prior patellectomy underwent a cruciate retaining TKA and were followed up for an average of 9.3 years (range 2-14 years). At each followup visit, they were evaluated clinically, radiologically and by the Hospital for Special Surgery Scoring System. Results: Twenty one knees did not have any pain or difficulty in climbing stairs, 10 knees were slightly painful on stairs but pain free on walking on flat ground and two knees experienced mild to moderate pain on walking up and down stairs as well as on flat ground. The average range of motion preoperatively was 87° , which postoperatively increased to 118° . The average Hospital for Special Surgery Knee scores increased from 52 to 89 points. None of the knees showed any progressive radiolucencies or evidence of any loosening/osteolysis or fractures in followup. Conclusion: Cruciate retaining TKA offers good results at midterm followup in patients with a prior patellectomy.

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