Palmar reconstruction of the triangular fibrocartilage complex for instability of the distal radioulnar joint: a biomechanical study

2012 ◽  
Vol 38 (5) ◽  
pp. 515-522 ◽  
Author(s):  
T. Kataoka ◽  
H. Moritomo ◽  
S. Omokawa ◽  
A. Iida ◽  
T. Wada ◽  
...  
Keyword(s):  
Joint Instability ◽  
Distal Radioulnar Joint ◽  
Biomechanical Study ◽  
Bone Tunnel ◽  
Triangular Fibrocartilage Complex ◽  
Reconstruction Technique ◽  
Radioulnar Joint ◽  
Fresh Cadaver ◽  
Palmar Approach ◽  
Triangular Fibrocartilage

We developed a new triangular fibrocartilage complex reconstruction technique for distal radioulnar joint instability in which the palmar portion of the triangular fibrocartilage complex was predominantly reconstructed, and evaluated whether such reconstruction can restore stability of the distal radioulnar joint in seven fresh cadaver upper extremities. Distal radioulnar joint instability was induced by cutting all soft-tissue stabilizers around the distal ulna. Using a palmar approach, a palmaris longus tendon graft was sutured to the remnant of the palmar radioulnar and ulnocarpal ligaments. The graft was then passed through a bone tunnel created at the fovea and was sutured. Loads were applied to the radius, and dorsopalmar displacements of the radius relative to the ulna were measured using an electromagnetic tracking device in neutral rotation, 60° supination and 60° pronation. We compared the dorsopalmar displacements before sectioning, before reconstruction and after reconstruction. Dorsopalmar instability produced by sectioning significantly improved in all forearm positions after reconstruction.

Patients with triangular fibrocartilage complex injuries and distal radioulnar joint instability have reduced rotational torque in the forearm

2016 ◽  
Vol 41 (7) ◽  
pp. 732-738 ◽  
Author(s):  
J. K. Andersson ◽  
P. Axelsson ◽  
J. Strömberg ◽  
J. Karlsson ◽  
J. Fridén
Keyword(s):  
Joint Instability ◽  
Clinical Signs ◽  
Case Series ◽  
Distal Radioulnar Joint ◽  
Triangular Fibrocartilage Complex ◽  
Wrist Arthroscopy ◽  
Level Of Evidence ◽  
Independent Observer ◽  
Radioulnar Joint ◽  
Triangular Fibrocartilage

A total of 20 patients scheduled for wrist arthroscopy, all with clinical signs of rupture to the triangular fibrocartilage complex and distal radioulnar joint instability, were tested pre-operatively by an independent observer for strength of forearm rotation. During surgery, the intra-articular pathology was documented by photography and also subsequently individually analysed by another independent hand surgeon. Arthroscopy revealed a type 1-B injury to the triangular fibrocartilage complex in 18 of 20 patients. Inter-rater reliability between the operating surgeon and the independent reviewer showed absolute agreement in all but one patient (95%) in terms of the injury to the triangular fibrocartilage complex and its classification. The average pre-operative torque strength was 71% of the strength of the non-injured contralateral side in pronation and supination. Distal radioulnar joint instability with an arthroscopically verified injury to the triangular fibrocartilage complex is associated with a significant loss of both pronation and supination torque. Level of evidence: Case series, Level IV.

Arthroscopic transosseous foveal footprint repair of the triangular fibrocartilage complex

2022 ◽  
pp. 175319342110658
Author(s):  
Chen-Yuan Yang ◽  
Wei-Jen Chen
Keyword(s):  
Distal Radioulnar Joint ◽  
Bone Tunnel ◽  
Triangular Fibrocartilage Complex ◽  
Functional Score ◽  
Level Of Evidence ◽  
Radioulnar Joint ◽  
Repair Technique ◽  
Significant Difference ◽  
Triangular Fibrocartilage

Foveal disruption of the triangular fibrocartilage complex contributes to the instability of distal radioulnar joint. We have developed an arthroscopic transosseous foveal footprint repair technique, which maximizes the contact between the disrupted triangular fibrocartilage complex and its foveal footprint for better healing by using four sutures in a divergent configuration through a 1.6-mm bone tunnel. Twelve patients with triangular fibrocartilage complex foveal injuries who had undergone this repair technique were reviewed with a mean follow-up of 53 months. All patients achieved significant improvement in the modified Mayo wrist score and the Disabilities of the Arm, Shoulder and Hand score. All patients had stable distal radioulnar joints with comparable ranges of motion and grip strengths between the operated and contralateral wrists. There was no significant difference in functional score in those who were treated more than 6 months after injury. Level of evidence: IV

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