Arthroscopically Assisted Treatment of Volar Rim Fractures

Abstract

Background Arthroscopically-assisted reduction and internal fixation (AARIF) for distal radius fractures (DRF) has been extensively described. Little information is available about AARIF in AO “B3” and “C” DRF with displaced lunate facet volar rim fragment (VRF) and volar carpal subluxation. However, lunate volar rim fragment (LVRF) may be very difficult to reduce and fix under arthroscopic control using the flexor carpi radialis (FCR) or FCR extended approaches while traction is applied.

Purposes The aims were to describe our surgical technique of AARIF of partial or complete DRF with VRF and provide information about how often this technique may be necessary, based on a large DRF database.

Methods The dual-window volar approach for complete articular AO C DRF with volar medial fragment was described in 2012 for performing open reduction internal fixation (ORIF). Since 2015, we have used the dual-window approach for AARIF of “B3” or “C” DRF with volar carpal subluxation. We analyzed our PAF database, searching for patients treated with AARIF in “B3” and “C” fractures.

Results The dual-window volar approach is very useful when using AARIF for AO “B3” and “C” DRF with displaced VRF and volar carpal subluxation. The anteromedial part of the exposure allows a direct access to reduction and fixation of the LVRF under traction and arthroscopic control. Overall, 1% of all articular DRF in this series showed a displaced LVRF amenable to the dual-window volar approach.

Conclusion It is almost impossible to access and properly fix a VRF using traction and arthroscopic control through the FCR or FCR extended FCR approach because of the stretched flexor tendon mass. The use of the dual-window approach during AARIF of AO “B3” or “C” DRF has not previously been reported. Displaced VRF are rare whether they were part of “B3” or “C” fractures. If AARIF is chosen, we strongly recommend the use of the dual-window volar approach for AO “B3” and “C” fractures with VRF. A single anteromedial approach can also be used for isolated “B3” anteromedial DRF.

Keywords

Distal Radius Fractures - Arthroscopy - AARIF - Lunate Volar Rim Fragment - Volar Carpal Subluxation

Publication History

Received: 09 April 2021

Accepted: 10 August 2021

Article published online:
13 December 2021

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