Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
. 2016 Aug 24:16:ic37.
eCollection 2016.

Lunate Dislocation and Basic Wrist Kinematics

Maxwell Wingelaar  1 , Patrick Newbury  1 , Nicholas S Adams  2 , Andrew J Livingston  3
Affiliations
Case Reports

Lunate Dislocation and Basic Wrist Kinematics

Maxwell Wingelaar et al. Eplasty. .
No abstract available

Keywords: Mayfield classifications; carpal instability; lunate dislocation; progressive perilunate instability; wrist kinematics.

PubMed Disclaimer

Figures

Figure 1
Figure 1
(a) Anteroposterior view of the right wrist demonstrating transradial styloid lunate dislocation. The lunate is seen overlapping the capitate, creating the classic “piece-of-pie” sign (white arrow). (b) Lateral view of the right wrist demonstrating lunate dislocation. The lunate is displaced and angulated out of the lunate fossa, producing the “spilt teacup” appearance (black arrow).
Figure 2
Figure 2
Right volar wrist demonstrating the pattern of progressive perilunate instability described by Mayfield et al. Illustration provided by Lindsey A. Behrend, BS.
Figure 3
Figure 3
Diagram illustrating perilunate and lunate dislocations. Note the position of the lunate relative to the lunate fossa of the distal radius. The lunate remains in the fossa in perilunate dislocations.
Figure 4
Figure 4
Volar exposure of the wrist. Note the lunate dislocated into the carpal tunnel.
See this image and copyright information in PMC

References

    1. Tucker A, Marley W, Ruiz A. Radiological signs of a true lunate dislocation. BMJ Case Rep. 2013;2013 doi:10.1136/bcr-2013-009446. - PMC - PubMed
    1. Mayfield JK, Johnson RP, Kilcoyne RK. Carpal dislocations: pathomechanics and progressive perilunar instability. J Hand Surg. 1980;5(3):226–41. - PubMed
    1. Nash W, Walker R, Gidwani S, Ajuied A. Seminal papers in hand and wrist surgery. Orthop Trauma. 2015;29(6):408–18.
    1. Melone CP, Jr, Murphy MS, Raskin KB. Perilunate injuries. Repair by dual dorsal and volar approaches. Hand Clin. 2000;16(3):439–48. - PubMed
    1. Dumontier C, Meyer zu Reckendorf G, Sautet A, Lenoble E, Saffar P, Allieu Y. Radiocarpal dislocations: classification and proposal for treatment. A review of twenty-seven cases. J Bone Joint Surg Am. 2001;83-A(2):212–8. - PubMed

Publication types

LinkOut - more resources