Use of hyaluronic acid injection after arthroscopic release in lateral patellar compression syndrome with degenerative cartilage changes: randomized control trial

Table 2 The mean differences of Kujala score between pre-operative and post-operative assessments in four time periods for group B

Study variables	Periods of assessment	N	Mean	SD	Paired t-test	P-value
Kujala score	Kujala score preoperatively	45	40.64	5.83	−34.63	< 0.001٭
	Kujala score 3 months postoperatively	45	76.35	3.48	−34.63	< 0.001٭
	Kujala score preoperatively	45	40.64	5.83	− 37.46	< 0.001٭
	Kujala score 6 months postoperatively	45	77.93	3.10	− 37.46	< 0.001٭
	Kujala score preoperatively	45	40.64	5.83	− 44.39	< 0.001٭
	Kujala score 1 year postoperatively	45	84.82	3.00	− 44.39	< 0.001٭
	Kujala score preoperatively	45	40.64	5.83	−44.99	< 0.001٭
	Kujala score 2 year postoperatively	45	85.822	2.33	−44.99	< 0.001٭

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