Proximal Row Carpectomy Does Not Alter Contact Pressures of the Lunate Fossa: A Cadaveric Study

Overview

Journal Hand (N Y)

Publisher Sage Publications

Specialties General Surgery
Orthopedics

Date 2022 Jul 11

PMID 35815611

Authors

Hailey P Huddleston

Katherine Connors

Kenneth H Levy

Joey S Kurtzman

Westley T Hayes

Steven M Koehler

Affiliations

Soon will be listed here.

Abstract

Background: Previous studies have suggested that proximal row carpectomy (PRC) results in increased contact pressures and decreased contact areas in the radiocarpal joint. Such experiments, however, used older technologies that may be associated with considerable measurement errors. The purpose of this study was to determine whether there was a significant difference in contact pressure and contact area before and after PRC using Tekscan, a newer pressure sensing technology.

Methods: Ten nonpaired cadaveric specimens were dissected proximal to the carpal row and potted. An ultra-thin Tekscan sensor was secured in the lunate fossa of the radius. The wrists were loaded with 200 N of force for 60 seconds to simulate clenched-fist grip; contact pressure and area was assessed before and after PRC.

Results: Performing a PRC did not significantly increase mean contact pressure at the lunate fossa compared to the native state (mean increase of 17.4 ± 43.2 N/cm, = .184). Similarly, the PRC did not significantly alter peak contact pressures at the lunate fossa (intact: 617.2 ± 233.46 N/cm, median = 637.5 N/cm; PRC: 707.8 ± 156.6 N/cm, median = 728.5 N/cm; = .169). In addition, the PRC (0.46 ± 0.15 cm, median = 0.48 cm) and intact states (0.49 ± 0.25 cm, median = 0.44 cm) demonstrated similar contact areas ( = .681).

Conclusions: In contrast to prior studies that demonstrated significant increases in contact pressure and decreases in contact area after PRC, our findings propose that performing a PRC does not significantly alter the contact pressures or area of the lunate fossa of the radiocarpal joint.

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