The terminal tendon of the digital extensor mechanism: Part I, anatomic study

The terminal tendon of the digital extensor mechanism: Part II, kinematic study

“…1 Adequate function of the TT is dependent on normal kinematics of the digital extensor mechanism. Closed and open injuries of the TT often are encountered in a clinical setting.…”

Functional Anatomy of the Thumb Sagittal Band

“…Therefore, the finger SB stabilizes the extensor tendon and enhances the mechanical efficiency of the extensor mechanism function during MP and IP joint motion. [1][2][3][4][5][6][7] In the present study of the thumb SB, we observed that, although the anatomy of the thumb SB is different from that of the fingers, its basic kinematics and stabilizing function for the extensor apparatus are similar.…”

“…The radial and ulnar components of the SB, for simplicity referred to also as radial and ulnar SBs, are firmly attached to both sides of the extensor tendon. 1,2 Previous studies [1][2][3][4] have demonstrated the SB to be a stabilizer of the extensor tendon at the MP joint.…”

Treatment of chronic extensor tendons lesions of the fingers

“…It takes an oblique trajectory and crosses the PIP laterally in front of its flexion-extension axis, to join the volar side of the conjoined lateral band and merges with it at the middle phalanx's neck area, contributing to the formation of the terminal tendon of the digital extensor mechanism. However, this ligament can be extremely thin, even missing [12] and its precise role is controversial [13]. Because its trajectory places it under tension during PIP extension, it is presumed to provide an active tenodesis effect that allows DIP extension but limits its flexion when the PIP is extended.…”