Non-operative management of terrible triad injuries of the elbow; not so terrible?

Introduction: Terrible triad injuries (TTIs) of the elbow have traditionally been reported to have poor outcomes, hence requiring surgical stabilisation. We identified and reviewed patients with TTIs treated non-operatively within our department.

Methods: We retrospectively reviewed patients with TTI treated non-operatively with standardised elbow-instability rehabilitation from 2010 to 2020. We used Mason and Morrey classifications for radial head and coronoid fractures, respectively. Non-operative indications included a congruent joint on CT, significant co-morbidities pre-disposing to high-risk surgery and/or patient preference. Outcomes included Oxford Elbow Score (OES), ROM and complications.

Results: Nineteen patients were included (mean age 49; 37% female). At an average of 6 years (range 2-11 years) post-treatment, mean OES was 46 ± 7. At last clinic review, mean 6 months (2-15), average ROM was 131 ± 11° flexion, 8 ± 10° extension, 85 ± 12° supination and 85 ± 13° pronation. One patient required arthrolysis and another had an incongruent ulnohumeral joint which developed clicking with a functional ROM.

Conclusion: Our report suggests non-operatively managed and appropriately rehabilitated TTI injuries can achieve good function and ROM. We recommend conservative management as a viable option in cases with joint congruency and no mechanical block in patients with significant co-morbidities or those refusing surgery but patients must be assessed on a case-by-case basis.