Central fracture dislocation of the 5th metacarpo-hamate joint

Case contributed by Chris O'Donnell

Diagnosis certain

Citation, DOI, disclosures and case data

Citation:

O'Donnell C, Central fracture dislocation of the 5th metacarpo-hamate joint. Case study, Radiopaedia.org (Accessed on 25 Apr 2024) https://doi.org/10.53347/rID-30116

DOI:

https://doi.org/10.53347/rID-30116

Permalink:

https://radiopaedia.org/cases/30116?iframe=true

rID:

30116

Disclosures:

At the time the case was submitted for publication Chris O'Donnell had no recorded disclosures.

View Chris O'Donnell's current disclosures

Case published:

20 Jul 2014

Revisions:

3 times, by 2 contributors - see full revision history and disclosures

Systems:

Musculoskeletal

Quiz mode:

Included

Presentation

Medial wrist pain following a high speed motor bike accident

Patient Data

Age: 25

Gender: Male

From the case: Central fracture dislocation of the 5th metacarpo-hamate joint

Central fracture dislocation of the metacarpo-hamate joint due to the 5th metacarpal base (arrow) being impacted onto the central hamate. In addition there is a comminuted fracture at the base of the 4th metacarpal due to imoaction with the capitate.

Case Discussion

Unusual injury due to impaction of a clenched wrist against a hard surface causing the hamate to be the cleeved in coronal plane by the 5th metacarpal base. Typically these fracture dislocations are associated with a further impaction injury/fracture to the 4th metacarpal base (against the distal capitate). The more common hamate fracture involves an avulsion of the hook occurring in professional golfers and racquet sports.

References

2 public playlists include this case

38.5 wrist by AA B
Trauma - upper extremity by Tom Molyneux