Biomechanical Characteristics of Hemi-Hamate Reconstruction Versus Volar Plate Arthroplasty in the Treatment of Dorsal Fracture Dislocations of the Proximal Interphalangeal Joint

Treatment of unstable proximal interphalangeal joint fractures with hemi-hamate osteochondral autografts

“…From a biomechanical point of view, both Eaton’s technique and hamate grafting appear to prevent dorsal subluxation. However, it seems that Eaton’s technique leads to greater flexion deformity, especially when the bone defect is larger (Tyser et al, 2015). This makes hamate autografting a potential alternative to palmar plate interposition.…”

Injuries Around the Proximal Interphalangeal Joint

“…4,9,80 VPA has a tendency for flexion deformity, which increases with an increasing defect in the middle phalanx palmar base as the volar plate is advanced further into the joint. 81 Mild flexion contractures of the DIPJ 10 to 20 are common and expected, but more severe flexion contractures can occur if the joint is immobilized in excessive flexion or if the volar plate is insufficiently mobilized. 81…”

“…81 Mild flexion contractures of the DIPJ 10 to 20 are common and expected, but more severe flexion contractures can occur if the joint is immobilized in excessive flexion or if the volar plate is insufficiently mobilized. 81…”

“…Hemi-hamate replacement arthroplasty (HHA) has several characteristics that fulfill the treatment goals of PIPJ dorsal fracture dislocations. 81 It provides a stable bony palmar lip, enables early motion through rigid fixation, and restores native hyaline cartilage.…”

Commentary on “Biomechanical Characteristics of Hemi-Hamate Reconstruction Versus Volar Plate Arthroplasty in the Treatment of Dorsal Fracture Dislocations of the Proximal Interphalangeal Joint”

“…This paper 1 compares the biomechanical characteristics of volar plate arthroplasty and hemi-hamate reconstruction. These 2 management paradigms represent the old and new when it comes to reconstruction at the proximal interphalangeal joint.…”