Document Detail

Improved healing of ligament to bone with point fixation in rabbits.
MedLine Citation:
PMID:  17260209     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Secure healing of soft tissue to bone is a prerequisite for many orthopedic operations. This healing can be achieved either by pressing the tissue against the bone (press fixation) or by suturing the soft tissue to the bone (point fixation).
EXPERIMENTS AND FINDINGS: We tested the hypothesis that point fixation of soft tissue to bone results in better mechanical properties than press fixation. 10 skeletally mature New Zealand White rabbits were operated on bilaterally at the knees. The medial collateral ligaments were fixated to the bone just above the original insertion on the tibia. Two types of plates were used for this purpose, one with flat undersurface (left knee) and the other one with a pegged undersurface (right knee). The pegged plate was thought to mimic fixation achieved with suture anchors. After 4 weeks, mechanical testing revealed an almost doubled force at failure, stiffness and energy uptake in the knees operated with the pegged plates.
INTERPRETATION: Suture anchors or devices with a pegged undersurface are better for soft tissue fixation to bone than devices with a flat surface, such as screws with washers or staples.
Shwan Khoschnau; Anna Fahlgren; Per Aspenberg; Hans Rahme
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta orthopaedica     Volume:  77     ISSN:  1745-3674     ISO Abbreviation:  Acta Orthop     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2007-01-29     Completed Date:  2007-02-05     Revised Date:  2013-07-15    
Medline Journal Info:
Nlm Unique ID:  101231512     Medline TA:  Acta Orthop     Country:  Sweden    
Other Details:
Languages:  eng     Pagination:  967-72     Citation Subset:  IM    
Department of Orthopedics, Uppsala University Hospital, Uppsala, Sweden.
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MeSH Terms
Bone Plates
Energy Metabolism
Medial Collateral Ligament, Knee / physiology*,  surgery
Stress, Mechanical
Suture Anchors*
Wound Healing / physiology*

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