The Outcome of Percutaneous Fixation of Transscaphoid Perilunate Fracture-Dislocation: A Series of 10 Cases

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Natdanai Chusing

Abstract

Objective: To study the short-term outcomes of transscaphoid perilunate fracture-dislocation treated with percutaneous fixation with headless compression screw and Kirschner wires.


Material and Method: A retrospective study of 10 transscaphoid perilunate fracture-dislocation patients who were treated at Khon Kaen hospital between July 2016 – December 2017. All of them, initially were treated with closed reduction of lunocapitate joint, and then underwent surgery with percutaneous fixation of scaphoid fracture and perilunate joints. The outcomes were measured using Mayo Wrist Score and radiographic parameters (scapholunate angle, lunocapitate angle, scapholunate gap and modified carpal height ratios).


Results: Ten patients were recruited in this study. Eight patients were male, and the average age of patients were 29 ± 7.84 years. According to Herzberg’s classification, there were type I in 7 patients, type IIa in 2 patients and type IIb in 1 patient. The scaphoid fracture configurations were all waist (two patients had comminution pattern). The total wrist arc of motion and grip strength averaged 76.26 ± 4.42 and 77.04 ± 1.01, respectively, compared with the contralateral wrist. The Mayo Wrist Score averaged 74.5 ± 8.64 points, classified as 1 excellent, 3 good, 5 fair and 1 poor. The patients that were operated within 10 days and after 10 days had Mayo Wrist Score averaged 81 ± 5.47 and 68 ± 5.7, respectively. Average scapholunate gap, lunocapitate angle and modified carpal height ratio were within normal limits of 1.33 ± 0.16 mm, 13.23 ± 5.8 degrees and 1.51 ± 0.06, respectively, but scapholunate angle was relatively high with an average of 58.16 ± 5.62 degrees.


Conclusion: The treatment of transscaphoid perilunate fracture-dislocation with percutaneous fixation technique has acceptable short-term outcomes.

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Case report

References

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