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Table 3 Intra- and post-operative data for the 10 patients with PAONK. Summary of continuous variables is shown as “mean (standard deviation)”

From: Extrusion of the medial meniscus is a potential predisposing factor for post-arthroscopy osteonecrosis of the knee

Patient No

Age Sex

Type of MM tear

Surgery Done

Resected width of MM

Postop. period until the pain recurrence a

Postop. period until taking the MRIb

1.

70’s, F

RT at PH (with HT)

PMM

Subtotal

8 wks

12 wks

2.

60’s, M

RT at PH

PMM

Half

12 wks

19 wks

3.

60’s, F

PRT

PMM

Subtotal

2 wks

4 wks

4.

70’s, F

PRT (with HT)

PMM

Subtotal

4 wks

6 wks

5.

60’s, F

PRT (with HT)

PMM

Subtotal

8 wks

9 wks

6.

60’s, F

PRT

PMM, PLM

Subtotal

6 wks

11 wks

7.

60’s, F

RT at PH

PMM

Half

7 wks

21 wks

8.

80’s, M

RT at PH (with HT)

PMM

Subtotal

7 wks

19 wks

9.

60’s, F

PRT

PMM, PLM

Subtotal

3 wks

5 wks

10.

60’s, F

RT at PH (with HT)

PMM, LMR

Subtotal

Unclear

3 wks

 Summary

 

PRT: 5

PMM: 10

Subtotal: 8

5.7 wks

12.1 wks

  

RT: 5

PLM: 2 LMR: 1

Half: 2

(3.3)

(7.9)

  1. F Female, M Male, MM Medial meniscus, RT Radial tear, PH Posterior horn, HT Horizontal tear, PRT Posterior root tear, PMM Partial medial meniscectomy, PLM Partial lateral meniscectomy, LMR Lateral meniscus repair. a The period from the meniscectomy to the recurrence of knee pain. b The period from the meniscectomy to the time of diagnosis of PAONK using MRI