The effect of cast immobilisation on meniscal healing. An experimental study in the dog

Saved in:
Bibliographic Details
Title translated into German:Auswirkung der Ruhigstellung durch Gipsverband auf die Heilung von Meniskusverletzungen. Eine experimentelle Untersuchung an Hunden
Author:Dowdy, Paul A.; Miniaci, Anthony; Arnoczky, Steven P.; Fowler, Peter J.; Boughner, Derek R.
Published in:The American journal of sports medicine
Published:23 (1995), 6 , S. 721-728, Lit.
Format: Publications (Database SPOLIT)
Publication Type: Journal article
Media type: Print resource
ISSN:0363-5465, 1552-3365
Online Access:
Identification number:PU199605107770

Author's abstract

A 1.5-cm longitudinal, full-thickness incision was made in the vascularized portion of the medial meniscus in 20 adult dogs and anatomically repaired. Postoperatively, the animals were either placed in a long leg cast (N=9) or mobilized immediately (N=11). The animals were sacrificed at 2 weeks (6 dogs), 4 weeks (6 dogs), or 10 weeks (8 dogs). Five medial menisci from the nonoperated side were used as controls. Collagen content was measured using a digital image analysis system, and the collagen percentage in the repair tissue in each postoperative treatment group was compared. In the 2-week and 4-week group, there was no statistically significant difference in the percentage of collagen between those animals immobilized versus those that had early mobilization. The animals in the 10-week group that were mobilized had a significantly greater collagen percentage in the healing meniscal incicion than those that were cast immobilized (44.6%+/-10% versus 27.0%+/-11%, P<0.0001). There was no significant difference in the collagen percentages between the mobilized 10-week group and the contralateral control menisci group. All other menisci had a decreased collagen percentage compared with the controls. Prolonged immobilization decreases collagen formation in healing menisci. Thus, our results suggest that patients undergoing isolated meniscal repair either be immediately mobilized after surgery or immobilized for short periods only. Verf.-Referat