TY - JOUR
T1 - Intraosseous and extraosseous attachments of flexor tendon to bone
T2 - a biomechanical in vivo study in rabbits.
AU - Green, Steven M.
AU - Posner, Martin A.
PY - 2009/11
Y1 - 2009/11
N2 - There are 2 popular methods of repairing flexor tendons to the distal phalanx and attaching a free tendon graft to bone: intraosseous, by implanting the tendon into a bony tunnel, and extraosseous, by suturing the tendon to the cortical surface after elevating the periosteum. An in vivo study was designed to determine whether one method is stronger than the other. The profundus flexor of the third and fourth toes of the hind paw of adult rabbits was divided and reattached to the middle phalanx using either an intraosseous tunnel or an extraosseous suture. Half the rabbits were killed after 3 weeks, the other half after 8 weeks. Repairs were then tested to failure, using an Instron device, and compared with the same tendons in the nonoperated limbs. The repaired tendons demonstrated similar strength 3 weeks and 8 weeks after surgery but were significantly weaker than the nonoperated tendons. The importance of this study is that it gives equal credence to these usual methods of tendon attachment.
AB - There are 2 popular methods of repairing flexor tendons to the distal phalanx and attaching a free tendon graft to bone: intraosseous, by implanting the tendon into a bony tunnel, and extraosseous, by suturing the tendon to the cortical surface after elevating the periosteum. An in vivo study was designed to determine whether one method is stronger than the other. The profundus flexor of the third and fourth toes of the hind paw of adult rabbits was divided and reattached to the middle phalanx using either an intraosseous tunnel or an extraosseous suture. Half the rabbits were killed after 3 weeks, the other half after 8 weeks. Repairs were then tested to failure, using an Instron device, and compared with the same tendons in the nonoperated limbs. The repaired tendons demonstrated similar strength 3 weeks and 8 weeks after surgery but were significantly weaker than the nonoperated tendons. The importance of this study is that it gives equal credence to these usual methods of tendon attachment.
UR - http://www.scopus.com/inward/record.url?scp=77950348267&partnerID=8YFLogxK
M3 - Article
C2 - 20049357
AN - SCOPUS:77950348267
SN - 1078-4519
VL - 38
SP - E170-172
JO - American journal of orthopedics (Belle Mead, N.J.)
JF - American journal of orthopedics (Belle Mead, N.J.)
IS - 11
ER -