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Knee Surgery, Sports Traumatology, Arthroscopy

, Volume 23, Issue 1, pp 246–250 | Cite as

Postarthroscopy osteonecrosis of the knee

  • Mehmet Türker
  • Özgur Çetik
  • Meriç Çırpar
  • Serhat Durusoy
  • Barış Cömert
Knee

Abstract

Purpose

Spontaneous subchondral osteonecrosis of the knee joint confined to a localized area of one condyle can occur after arthroscopic procedures. Meniscal tears, arthroscopic meniscectomy, and radiofrequency chondroplasty are aetiological factors in the development of osteonecrosis. The aim of this study was to investigate whether the incidence of osteonecrosis increased when mechanical or radiofrequency chondroplasty was used in conjunction with arthroscopic meniscectomy.

Methods

In this prospective clinical trial, arthroscopic meniscectomy was the primary treatment in 75 patients (mean age 40 ± 13) with stage II and III degenerative changes on the articular cartilage. Patients had to meet the following criteria: 1) have preoperative MRI and plain film radiographs showing no evidence of osteonecrosis; 2) be symptomatic for at least 6 weeks before the preoperative MRI; and 3) have arthroscopically confirmed stage II or III chondral lesion. A preoperative MRI was performed for all patients. For treatment of chondral lesions, debridement with a shaver or chondroplasty with a monopolar RF energy system was used. Patients were divided into three treatment groups. Partial meniscectomy of the medial or lateral (or both) menisci was performed on all patients, but patients in group 2 additionally received mechanical debridement of the chondral lesion, and those in group 3 were additionally treated with RF chondroplasty. Patients in group 1 were treated with partial meniscectomy alone. Patients were re-examined after 6 months, at which time a repeat MRI was performed.

Results

Development of osteonecrosis was detected during the postoperative MRIs of five patients: two in group 1, two in group 2, and one in group 3.

Conclusion

The addition of mechanical or RF chondroplasty to meniscectomy did not increase the number of patients with osteonecrosis. Also, RF chondroplasty, which is commonly proposed to be an aetiological factor, resulted in a decrease in the number of patients that developed osteonecrosis.

Level of evidence

II.

Keywords

Osteonecrosis Radiofrequency Arthroscopy Chondral debridement 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Mehmet Türker
    • 1
  • Özgur Çetik
    • 2
  • Meriç Çırpar
    • 1
  • Serhat Durusoy
    • 1
  • Barış Cömert
    • 3
  1. 1.Department of Orthopedics and Traumatology, Faculty of MedicineKırıkkale UniversityKirikkaleTurkey
  2. 2.Department of Orthopedics and TraumatologyAcıbadem Bakırköy HospitalİstanbulTurkey
  3. 3.Department of Radiology, Faculty of MedicineKırıkkale UniversityKirikkaleTurkey

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