Evidence map›Paper›PMID 41211474›Full record

ArticleCase reports in orthopedics2025

Scapholunate Dissociation due to an Atypical Biomechanical Mechanism in Arm Wrestling: A Case Report.

Fumikazu Niitsu, Manabu Tanaka, Itsuo Joko, Mio Uchida, Kazuo Kasuga, Shigeharu Uchiyama

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Article in Case reports in orthopedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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6 authors.

Fumikazu NiitsuDepartment of Orthopaedic Surgery, Okaya City Hospital, Okaya, Nagano, Japan.
Manabu TanakaDepartment of Orthopaedic Surgery, Okaya City Hospital, Okaya, Nagano, Japan.ORCID https://orcid.org/0000-0002-9360-9784
Itsuo JokoDepartment of Orthopaedic Surgery, Okaya City Hospital, Okaya, Nagano, Japan.
Mio UchidaDepartment of Orthopaedic Surgery, Okaya City Hospital, Okaya, Nagano, Japan.
Kazuo KasugaDepartment of Orthopaedic Surgery, Okaya City Hospital, Okaya, Nagano, Japan.
Shigeharu UchiyamaDepartment of Orthopaedic Surgery, Okaya City Hospital, Okaya, Nagano, Japan.ORCID https://orcid.org/0000-0002-5398-7895

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Scapholunate ligament injuries are not uncommon in hand surgery, but they are not described in the sport of arm wrestling. Case Presentation: The patient was a 28-year-old man who experienced wrist pain when he was about to lose an arm wrestling match. Since then, he has had persistent clicking in his right wrist, which was found to be due to scapholunate dissociation. The reason for scapholunate dissociation rather than a humeral shaft fracture in our patient may be a reduction in torque on the humerus due to forced elbow extension, which could be seen in a losing player at the end of the match. This position could concentrate the reaction force on the wrist rather than on the humerus. Conclusions: Arm wrestling should be recognized as a potential cause of scapholunate dissociation due to its atypical injury pattern, necessitating early diagnosis. Furthermore, the unique biomechanics of arm wrestling warrant attention in orthopedic and surgical literature.

Indexed as

arm wrestlingcapitohamate bone–ligament–bone graftscapholunate dissociation

Identifiers

PMID41211474
PMCPMC12591800

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