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J Wrist Surg
DOI: 10.1055/s-0043-1776000
Scientific Article

Arthroscopic Thermal Shrinkage of Lunotriquetral Ligament Incomplete Tear without Triangular Fibrocartilage Complex Perforation

Byung Sung Kim 
1   Department of Orthopaedic Surgery, Soonchunhyang University College of Medicine, Bucheon-si, Gyeonggi, Republic of Korea
,
Jin Yeong Hwang 
1   Department of Orthopaedic Surgery, Soonchunhyang University College of Medicine, Bucheon-si, Gyeonggi, Republic of Korea
,
Sung Hwan Kim 
1   Department of Orthopaedic Surgery, Soonchunhyang University College of Medicine, Bucheon-si, Gyeonggi, Republic of Korea
,
Eunseok Park 
1   Department of Orthopaedic Surgery, Soonchunhyang University College of Medicine, Bucheon-si, Gyeonggi, Republic of Korea
,
Junyong Kim 
1   Department of Orthopaedic Surgery, Soonchunhyang University College of Medicine, Bucheon-si, Gyeonggi, Republic of Korea
› Author Affiliations Funding This research was funded by a Soonchunhyang University grant.
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Abstract

Background Few studies have reported the clinical results of arthroscopic debridement and thermal shrinkage for partial lunotriquetral (LT) ligament injury.

Purpose We estimated the outcomes of arthroscopic thermal shrinkage of a traumatic LT ligament incomplete tear without triangular fibrocartilage complex (TFCC) perforation.

Methods We evaluated the results of 24 patients. The mean follow-up was 16 months. Radiographs were examined for ulnar variance (UV) and radioulnar distance on a true lateral radiograph, and wrist function was assessed based on grip strength, Mayo wrist score, and Disabilities of the Arm, Shoulder, and Hand (DASH) score, both pre- and postoperatively.

Results On preoperative magnetic resonance imaging (MRI), no obvious LT ligament tear was observed in any of the patients. The preoperative LT shear test was positive in 19 cases, while the LT ballottement test was positive in 18 cases and the ulnar stress test in 16 cases. Preoperatively, the average radiographic UV was 2.1 mm and the average radioulnar distance was 0.9 mm. The LT tear type was a flap tear in 22 cases and bucket handle tear in 2 cases arthroscopically. The visual analog pain scale score improved postoperatively (from 7.5 to 0.4). The average grip strength improved from 72.7% preoperatively to 89.8% postoperatively. The Mayo wrist score was excellent/good in 6/15 cases and fair in 3 cases, with the scores ranging from 68 to 87. The average DASH score improved from 36.8 to 7.

Conclusion We should be careful to differentiate LT ligament tears from TFCC lesions in the cases with ulnar wrist pain, because LT ligament tears may not be detected by MRI. Arthroscopic thermal shrinkage for traumatic LT ligament tear can be an effective treatment.

Level of Evidence Level IV.

Keywords

traumatic - triangular fibrocartilage complex tear - lunotriquetral ligament tear - arthroscopic debridement - thermal shrinkage

Note

Institutional review board approval was granted by the Soonchunhyang University Bucheon Hospital (2018–07–021–006) for this study.




Publication History

Received: 31 May 2023

Accepted: 12 September 2023

Article published online:
14 March 2024

© 2024. Thieme. All rights reserved.

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