Microsurgical Reconstruction of the Distal Ulna
Seance of wednesday 22 january 2025 (Chirurgie du poignet)
DOI number : 10.26299/vgc4-2n08/emem.2025.03.01
Abstract
Destruction of the distal ulna and distal radioulnar joint (DRUJ) can result from a number of aetiologies. We therefore investigated a biological model for microsurgical reconstruction of the distal ulna using a vascularised transfer from the metatarsophalangeal joint of the 2nd toe (MTP). We propose a biomechanical and surgical feasibility study of this transfer.
The arc of mobility in prono-supination of the DRUJ of 6 antebrachial frames was studied in the movement analysis laboratory. This same arc was assessed again after replacing the DRUJ with a MTP. Finally, a surgical feasibility study of this microsurgical transfer was carried out on anatomical parts.
From a biomechanical point of view, the mobility arch of a MTP makes it possible to reconstruct the functional sector of a DRUJ. Technically, this joint transfer remains accessible to surgeons accustomed to the technical requirements imposed by microsurgical reconstructions.
Reconstruction of the distal ulna and DRUJ using MTP is an alternative to palliative surgery or DRUJ arthroplasty. This procedure should be preferred in young adults and/or those with high functional demands.
Abbreviations :
DRUJ = Distal Radio Ulnar Joint
MTP = Second Toe Metatarsophalangeal Joint
The arc of mobility in prono-supination of the DRUJ of 6 antebrachial frames was studied in the movement analysis laboratory. This same arc was assessed again after replacing the DRUJ with a MTP. Finally, a surgical feasibility study of this microsurgical transfer was carried out on anatomical parts.
From a biomechanical point of view, the mobility arch of a MTP makes it possible to reconstruct the functional sector of a DRUJ. Technically, this joint transfer remains accessible to surgeons accustomed to the technical requirements imposed by microsurgical reconstructions.
Reconstruction of the distal ulna and DRUJ using MTP is an alternative to palliative surgery or DRUJ arthroplasty. This procedure should be preferred in young adults and/or those with high functional demands.
Abbreviations :
DRUJ = Distal Radio Ulnar Joint
MTP = Second Toe Metatarsophalangeal Joint