Zenke Yukichi
   Department   School of Medicine  Orthopedic Surgery, Clinical Medical Sciences
Article types journal article
Language English
Peer review Peer reviewed
Title Pisiform malalignment associated with distal radius fractures.
Journal Formal name:Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association
Abbreviation:J Orthop Sci
ISSN code:14362023/09492658
Domestic / ForeginForegin
Volume, Issue, Page 23(3),511-515頁
Author and coauthor Tajima Takafumi, Zenke Yukichi, Yamanaka Yoshiaki, Menuki Kunitaka, Sakai Akinori
Publication date 2018/05
Summary BACKGROUND:The association of scaphoid or other carpal bone fractures with distal radius fractures is frequently reported, whereas few studies have described pisiform malalignment associated with distal radius fractures. The purpose of this study was to investigate the frequency and characteristics of pisiform malalignment associated with distal radius fractures.METHODS:We performed a retrospective study by reviewing the data of 152 consecutive patients with a mean age of 63 years who were treated surgically for distal radius fractures during a five-year period. We evaluated the pisotriquetral joint via preoperative sagittal computed tomography (CT) and assessed pisiform malalignment. Pisiform malalignment was defined as follows: (1) wide type, joint space ≥4.0 mm; (2) non-parallel type, loss of parallelism of the joint surface of ≥20°; or (3) overriding type, proximal or distal overriding of the pisotriquetral joint ≥2.0 mm. We investigated the relationship between pisiform malalignment and the patterns of distal radius fractures. Pisiform malalignment was assessed using postoperative CT to determine whether it had been reduced.RESULTS:Pisiform malalignment was observed in 48 cases involving 44 patients with a mean age of 58 (17-81) years. The patients included 16, 17, and 15 cases of the wide type, non-parallel type, and overriding type, respectively. Distal radius fractures with dorsal displacement exhibited pisiform malalignment significantly more frequently than those with volar displacement. No significant difference was noted between intra- and extra-articular fractures or between patients with and without distal ulnar fractures. Among the 22 pisiform malalignment cases assessed via postoperative CT, 15 cases were reduced, and 7 cases remained malaligned. The non-parallel type exhibited the lowest reduction rate among the 3 types.CONCLUSIONS:Among distal radius fractures, 29% were complicated by pisiform malalignment. Distal radius fractures with dor
DOI 10.1016/j.jos.2018.02.010
PMID 29503035