The Ideal Insertion Site for the Flexor Digitorum Profundus Tendon in Jersey Finger Repair: A Biomechanical Analysis

Author(s):  
Liqin Xu ◽  
Mei Wang ◽  
Anthony Trenga ◽  
Steven Grindel ◽  
Roger Daley
1998 ◽  
Vol 23 (1) ◽  
pp. 120-126 ◽  
Author(s):  
Matthew J. Silva ◽  
Steven B. Hollstien ◽  
Michael D. Brodt ◽  
Martin I. Boyer ◽  
A. Marc Tetro ◽  
...  

2005 ◽  
Vol 30 (3) ◽  
pp. 288-293 ◽  
Author(s):  
N. KUSANO ◽  
M. A. ZAEGEL ◽  
J. D. PLACZEK ◽  
R. H. GELBERMAN ◽  
M. J. SILVA

We evaluated the effects of two types of supplementary core sutures on the tensile properties and resistance to gap formation of flexor digitorum profundus (FDP) tendon-bone repairs. Forty-five human cadaver FDP tendons were sharply released from their insertion sites and repaired to bone utilizing one of three repair techniques: four-strand modified Becker core suture (Becker only), modified Becker plus a figure-of-eight supplementary core suture (Becker plus figure-of-eight), and modified Becker plus a supplementary core suture using a bone anchor (Becker plus anchor). Ultimate (maximum) force did not differ between repair groups. However, addition of a supplementary suture significantly increased repair-site stiffness and the 1, 2 and 3 mm gap forces, while decreasing the gap at 20 N compared to the Becker only suture ( P<0.05). The only difference between the two supplementary suture groups was that the Becker plus anchor group had increased stiffness compared to the Becker plus figure-of-eight group. In conclusion, a supplementary figure-of-eight suture and a supplementary suture using a bone anchor provide enhanced resistance to gap formation for FDP tendon–bone repairs.


2010 ◽  
Vol 35 (6) ◽  
pp. 464-468 ◽  
Author(s):  
A. Odobescu ◽  
A. Radu ◽  
J.-P. Brutus ◽  
M. S. Gilardino

We describe a variation in the A4 pulley reconstruction technique using one slip of the flexor digitorum superficialis insertion and report the results of a biomechanical analysis of this reconstruction in cadavers. While conserving the distal bony insertion, one slip of flexor digitorum superficialis is transferred over the flexor digitorum profundus tendon and sutured to the contralateral superficialis slip insertion. This creates a new pulley at the base of the original A4 pulley that can be adjusted to accommodate an FDP repair of increased bulk. We found a 57% reduction in excess excursion due to bowstringing when compared with no repair. Furthermore the repairs were sturdy, 94% of specimens maintaining their integrity when a proximally directed force of 50 N was applied.


2013 ◽  
Vol 30 (2) ◽  
pp. 187-188
Author(s):  
Numan Sabit Kuyubaşı ◽  
Alper Çıraklı ◽  
Eyüp Çağatay Zengin ◽  
Murat Erdoğan ◽  
Ahmet Pişkin

2015 ◽  
Vol 40 (7) ◽  
pp. 729-734 ◽  
Author(s):  
J. D. Gillig ◽  
M. D. Smith ◽  
W. C. Hutton ◽  
C. D. Jarrett

Delayed diagnosis of jersey finger injuries often results in retraction of the flexor digitorum profundus tendon. Current practice recommends limiting tendon advancement to 1 cm in delayed repairs. The purpose of this study was to investigate the biomechanical consequences of tendon shortening on the force required to form a fist. The flexor digitorum profundus muscle was isolated in ten cadaveric forearms and the force required to form a fist was recorded. Simulated jersey finger injuries to the ring finger were then created and repaired. The forces required to pull the fingertips to the palm after serial tendon advancements were measured. There was a near linear increase in the force required for making a fist with shortening up to 2.5 cm. The force required to make a fist should be taken into account when considering the limit of ‘safe’ tendon shortening in delayed repair of jersey finger injuries.


1998 ◽  
Vol 23 (2) ◽  
pp. 283-284 ◽  
Author(s):  
M. M. AL-QATTAN

An unusual Salter type 2 fracture of the distal phalanx is described. The metaphyseal fragment of the fracture consisted of a long and thin plate of bone corresponding to the insertion site of the flexor digitorum profundus tendon. Differences between this combined fracture and the isolated mallet deformity or flexor profundus tendon avulsion fracture are discussed.


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