Francés Borrego, AlbertoMartínez García, ÁlvaroBaño Barragán, Laura delRodríguez González, AlbertoEchevarría Marín, MartaMarco Martínez, Fernando2024-04-192024-04-192023-02-08Frances Borrego A, Martinez Garcia A, Del Baño Barragán L, Rodríguez González A, Echevarría Marín M, Marco Martinez F. Subspine femoroacetabular impingement: retrospective study of a series of patients treated by hip arthroscopic resection. Arch Orthop Trauma Surg. 2023 Aug;143(8):4951-4959. doi: 10.1007/s00402-022-04761-2.1434-391610.1007/s00402-022-04761-2https://hdl.handle.net/20.500.14352/103247Background: Femoroacetabular impingement syndrome (FAIS) is a common hip pathology that causes pain and functional limitation in young patients. subspine femoroacetabular impingement (SFAI) is an increasingly diagnosed extra-articular subtype that occurs from mechanical conflict of the anteroinferior iliac spine (AIIS) with the cervico-diaphyseal junction during hip flexion, which is poorly described in the literature. Questions/purposes: We aimed to describe the clinical, functional, and radiological results of the arthroscopic treatment of a group of patients with SFAI treated in our Hip Unit. Study design: Case series. Methods: We present a retrospective study of ten patients with SFAI treated between 2013 and 2020 with arthroscopic resection. Clinical results were assessed with scales such as visual analog scale (VAS); modified Harris Hip Score (mHHS), and Hip disability and Osteoarthritis Outcome Score (HOOS). Radiological results were assessed with radiological measurements, magnetic resonance imaging (MRI), and computed tomography (CT) reconstructions. Results: Six patients had a Type III AIIS and four of them had Type II. Two patients had previously been surgically treated for FAIS. The range of motion improved in flexion from 107 ± 11 degrees before surgery to 127.5 ± 6 degrees (p = 0.005). MHHS improved from 48.1 (38-75.3) before surgery to 83.1 (57-91) (p = 0.007) and HOOS improved from 65.2 (58-75) to 89 (68.1-100) (p = 0.007). VAS improved from 7.3 (5-9) pre-surgical to 2.5 (0-8) post-surgical (p = 0.005). We did not have significant complications except for an asymptomatic case of heterotopic ossification (Brooker I). Conclusion: Arthroscopic decompression of AIIS in SFAI patients is a safe procedure that provides satisfactory short-term functional results, improving clinical symptoms, function, sports performance, and range of motion in our study.engAttribution 4.0 Internationaljournal article10.1007/s00402-022-04761-236752833https://link.springer.com/article/10.1007/s00402-022-04761-2open access616.7-001Femoroacetabular impigementHipHip arthroscopySubspine impigementSistema musculoesquelético3213.15 Traumatología