The efficacy of the pull-out and all-inside techniques for the treatment of Laprad type II medial meniscus posterior root tear

Purpose To investigate the therapeutic effect of Pull-out technique and All-inside technique on Laprad type II medial meniscus posterior root tear (MMPRT). Methods A total of 95 patients were included in this study. Kellgren Lawrence (K-L) grade was recorded by knee X-ray after surgery, and knee cartilage injury grade, subchondral cyst, subchondral edema, insufficiency fracture, meniscal extrusion and meniscal healing were recorded by MRI. International Knee Literature Committee Knee Assessment Scale (IKDC) score, Lysholm score and VAS score were used to evaluate knee joint function. Results There were no significant differences in K-L grade, knee cartilage injury grade, subchondral cyst, subchondral edema and insufficiency fracture between two groups (p > 0.05). The extrusion rate and degree of medial meniscus in pull-out repair group were 88.68%, 3.43 ± 0.71mm, while those in the all-inside repair group were 90.48%, 3.41 ± 0.80mm, with no statistical difference (p > 0.05). There were no significant differences in postoperative IKDC scores and Lysholm scores (p > 0.05). Conclusion Both pull-out repair and all-inside repair can improve knee joint function in the treatment of Laprad type II PMMRT.