Pediatric distal both-bone forearm fractures treated with percutaneous pinning with or without ulna fixation: a retrospective cohort study from two centres.

This study investigated the clinical and functional outcomes of children with distal both-bone forearm fractures treated by fixation of the radius only compared to fixation of both the radius and ulna. A total of 71 patients from two centres with distal both-bone forearm fractures (30 in the ulna-yes group, 41 in the ulna-no group) who underwent closed reduction and percutaneous pinning treatment were retrospectively analysed. Operation duration, number of fluoroscopic exposures, loss of reduction rate and angulation based on radiographic assessment were compared between the two groups. Evaluation of wrist function including Gartland-Werley Score and Mayo Wrist Score were compared at the last follow-up. Ulna angulation upon bone healing on the posteroanterior and the lateral plane of ulna-no group (6.11 ± 1.56°; 6.51 ± 1.69°) was significantly greater than that of ulna-yes group (4.49 ± 1.30°; 5.05 ± 2.18°) (p < 0.05). No significant difference was found in the loss of reduction rate between ulna-yes group (6.67%, 2/30) and the ulna-no group (4.88%, 2/41) (p > 0.05). At last follow-up, no significant difference was found between the Gartland-Werley Scores of the ulna-yes group (1.83 ± 3.25, range: 0-16) and ulna-no group (1.85 ± 2.72, range: 0-11.5) (p > 0.05). No significant difference was found between the Mayo Wrist Scores of the ulna-yes group (92.60 ± 6.20) and ulna-no group (92.15 ± 7.58) (p > 0.05). For distal both-bone forearm fractures in children, fixation of only the radius appears to be a viable method with equivalent clinical outcomes compared to fixation of both the radius and ulna.

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