Purpose: To evaluate the functional outcomes after using peroneus longus (PL) tendon autograft as meniscal transplantation in patients with knee joint line pain exaggerated with weight bearing following prior total or subtotal meniscectomy.

This research design is a single center prospective study carried out at a tertiary trauma center hospital between May 2022 and December 2022. This research had ethical Committee Approval which was granted by the Ethics Committee of Cairo University (Institutional Review Board (IRB) number N 207-2024). All patients signed an informed consent before joining this study. This study included 25 patients, with previous history of subtotal or total meniscectomy medially or laterally, who underwent meniscus transplantation using PL tendon autograft.

Inclusion Criteria:

• Skeletally mature patients with a history of prior subtotal or total (medial or lateral meniscus) meniscectomy.
• Post meniscectomy symptoms (medial or lateral knee joint line pain exaggerated with weight bearing).

Exclusion Criteria:

• Multi-ligamentous knee injuries.
• Skeletally immature patients.
• Significant osteoarthritic changes on radiographs (Ahlbäck II- V).
• Malalignment on full-length radiographs showing increased stress in the involved knee compartment.
• Presence of associated ipsilateral ankle joint problem.