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Table 2 Pre- and postoperative Lysholm score, CA, PTA, and PLS. (\( \overline{x}\pm s \))

From: Treatment for lateral patellar impingement syndrome with arthroscopic lateral patelloplasty: a bidirectional cohort study

Follow-up index

Preoperation

Postoperation

t

P

Lysholm score

80.66 ± 5.51

81.91 ± 6.21

− 5.392

0.000

PSA (°)

23.71 ± 8.86

10.80 ± 8.17

11.844

0.000

PTA (°)

11.60 ± 3.44

10.86 ± 3.16

3.750

0.001

PLS (mm)

12.29 ± 2.37

8.77 ± 2.18

11.625

0.000

  1. Data presented as means ± SD
  2. PSA patellar suitable angle, PTA patellar tilt angle, PLS patellar lateral shift