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Statistical analysis of surgical dog-ear regression
Kyung Suk Lee1, Nam Gyun Kim, Pal Young Jang
1Department of Plastic and Reconstructive Surgery, Institute of Health Sciences, College of Medicine and Hospital, Gyeongsang National University, Jinju, Republic of Korea.
Summary
Dog-ears often resolve naturally over time, especially in younger patients. Observation is recommended for dog-ears measuring 8 mm or less, avoiding unnecessary surgery.
Area of Science:
- Plastic Surgery
- Dermatology
- Wound Healing
Background:
- Traditional methods for correcting dog-ears can lead to extended scarring and longer operative durations.
- Existing surgical interventions for dog-ears present limitations.
Purpose of the Study:
- To investigate the natural regression of dog-ears without intervention.
- To analyze factors influencing dog-ear resolution over time.
Main Methods:
- A study involving 43 dog-ear cases across 26 patients.
- Linear regression analysis was employed to correlate patient factors with dog-ear height.
- A predictive equation for dog-ear height regression was developed.
Main Results:
- Dog-ear height significantly decreased over time, with faster regression observed in younger and female patients.
- It was predicted that dog-ears would reduce to 50% of their initial height in approximately 20.7 days.
- The median time for complete dog-ear regression was 132 days.
- Dog-ears with an initial height of 8 mm or less showed a 4.667 times greater likelihood of regression compared to larger ones.
Conclusions:
- For dog-ears with a height of 8 mm or less, non-surgical observation is advised over immediate surgical removal.
- This approach may reduce patient morbidity associated with surgical intervention.
