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Comparative Outcomes Between Surgical and Conservative Management of Mallet Thumb: A Systematic Review and Pooled
Emily Hirslund1, Chad Patience1, Philip Hang1
1Faculty of Health Science, Western University, London, ON, Canada.
Background:
While mallet finger remains a relatively common injury of the hand, mallet thumb is much rarer in occurrence. Mallet thumb management has been noted infrequently within the literature and reliable evidence regarding the most effective method of management remains absent. The aim of this review is to assess the quality of literature that exists pertaining to mallet thumb to determine whether conservative or surgical management is superior.
Methods:
A search was completed in February 2023 of Ovid Medline, Embase, CINAHL, and SPORTDiscus with no limitation on study type, and date of publication. Comparative outcomes of thumb interphalangeal (IP) joint range of motion, tip, lateral pinch and grip strength, complications, outcome measure scores, and follow-up period were recorded. We assessed 103 mallet thumbs (51 surgically and 52 conservatively managed) across the 23 studies of low to moderate quality based on the Structured Effectiveness Quality Evaluation Scale. The authors adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.
Results:
While recommendations remain weak due to low quality of evidence, our review found a lower complication rate and higher IP joint flexion in thumbs managed conservatively.
Conclusion:
These findings demonstrate a need for future research to shift toward ensuring standardized patient-rated outcome measures are utilized and functional outcomes are included in research planning and operationalization in order to contextualize clinical outcomes.
