Impact of time between meniscal injury and isolated meniscus repair on post-operative outcomes: A systematic review

Table 3 Study outcomes

Ref.	Mean time to surgery	Outcome measured	Mean postoperative follow up	Findings	Statistical analysis	P value
Eggli et al[11], 1995	≤ 8 weeks: Acute, > 8 weeks: Delayed	Failure rate	7.5 years	No significant difference in failure rate between patients that were operated on within or outside of 8 weeks after injury	χ² test	0.45
Lucas et al[13], 2015	5.3 months	Lysholm score	22.3 months (3.5-46 months)	No significant association between mean time to repair and clinical outcomes	Fisher's exact test	0.62
Hupperich et al[14], 2018	45.5 days	Lysholm score	44.4 months (15-96 months)	Surgery within the first week was associated with significant increase in Lysholm score	Unpaired t test	0.03a
Hagmeijer et al[12], 2019	50.7 days	Failure rate, Tegner score, and IKDC	17.6 years (13.1-25.9 years)	No significant difference in mean time to repair between failed and successful surgeries, IKDC score or Tegner score	Spearman correlation	0.86, 0.46, 0.65
Moon et al[15], 2020	18.1 weeks	Progression of MMER	≥ 2 years	Preoperative symptom duration is significantly correlated with change in MMER	Univariate	0.01a

^aStatistically significant findings.

IKDC: International Knee Documentation Committee; MMER: Medial meniscus extrusion ratio.