Clinical efficacy of coronoid fixation combined with lateral radial collateral ligament repair in the elbow posteromedial rotational instability&nbsp;

doi:10.13418/j.issn.1001-165x.2025.4.04

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Chinese Journal of Clinical Anatomy ›› 2025, Vol. 43 ›› Issue (4) : 387-391. DOI: 10.13418/j.issn.1001-165x.2025.4.04

Clinical efficacy of coronoid fixation combined with lateral radial collateral ligament repair in the elbow posteromedial rotational instability

Pan Chao, Yan Bingshan, Liu Junyang, Han Lei, Zhang Bo, Tian Xu, Liu Lintao, Dong Jingming*

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Abstract

Objective To compare the clinical efficacy of coronoid fixation with or without lateral radial collateral ligament (LRCL) repair in the elbow posteromedial rotational instability (PMRI). Methods The data of 33 PMRI patients who met the criteria from January 2015 to June 2023 were retrospectively analyzed. Fifteen patients underwent simple internal fixation of coronal process fractures, while 18 patients underwent coronoid fixation combined with LRCL repairing. The perioperative data, elbow joint function, and incidence of complications were compared between the two groups. Results All patients were followed up for 16 to 52 months, with an average follow-up of 33.5 months. The fixed group was superior to the LRCL repair group in terms of surgical time and intraoperative blood loss, and the difference was statistically significant (all P<0.05). The LRCL repair group had better elbow flexion and extension angles than the simple fixation group (both P<0.05), but there was no statistically significant difference between the two groups in terms of pronation and supination angles (both P>0.05). At the last follow-up, the LRCL repair group had better MEPS and DASH scores than the fixed group, and the difference was statistically significant (both P<0.05). There was no significant difference in VAS scores between the two groups (P>0.05). One patient in the LRCL repair group experienced poor healing of the lateral wound, and two patients in each group showed symptoms of ulnar nerve numbness. There was no statistically significant difference in the incidence of complications and Hastings&Graham ectopic ossification grading between the two groups of patients (both P>0.05). Conclusions For PMRI patients with subluxation or dislocation in the humeroradial joint, LRCL repairing can significantly improve elbow joint range of motion and functional scores but not increasing the risk of complications and ectopic ossification.

Key words

Elbow joint / &emsp / Coronoid / &emsp / Fracture fixation / &emsp / Lateral radial collateral ligament / &emsp / Ligament repair

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Pan Chao, Yan Bingshan, Liu Junyang, Han Lei, Zhang Bo, Tian Xu, Liu Lintao, Dong Jingming. Clinical efficacy of coronoid fixation combined with lateral radial collateral ligament repair in the elbow posteromedial rotational instability [J]. Chinese Journal of Clinical Anatomy. 2025, 43(4): 387-391 https://doi.org/10.13418/j.issn.1001-165x.2025.4.04

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