Polyurethane Scaffold vs Fascia Lata Autograft for Hip Labral Reconstruction : Comparison of Femoroacetabular Biomechanics
Capurro Soler, Bruno (Hospital del Mar (Barcelona, Catalunya))
Tey Pons, Marc (Hospital del Mar (Barcelona, Catalunya))
Carrera, Anna (Universitat de Girona)
Marqués-López, Fernando (Hospital del Mar (Barcelona, Catalunya))
Marín-Peña, Oliver (Hospital Universitario Infanta Leonor)
Torres-Eguía, Raúl (Clínica Cemtro)
Monllau García, Joan Carles (Hospital del Mar (Barcelona, Catalunya))
Reina De La Torre, Francisco (Universitat de Girona)
Universitat Autònoma de Barcelona

Data:	2023
Resum:	The integrity of the acetabular labrum is critical in providing normal function and minimizing hip degeneration and is considered key for success in today's hip preservation algorithm. Many advances have been made in labral repair and reconstruction to restore the suction seal. To compare the biomechanical effects of segmental labral reconstruction between the synthetic polyurethane scaffold (PS) and fascia lata autograft (FLA). Our hypothesis was that reconstruction with a macroporous polyurethane implant and autograft reconstruction of fascia lata would normalize hip joint kinetics and restore the suction seal. Controlled laboratory study. Ten cadaveric hips from 5 fresh-frozen pelvises underwent biomechanical testing with a dynamic intra-articular pressure measurement system under 3 conditions: (1) intact labrum, (2) reconstruction with PS after a 3-cm segmental labrectomy, then (3) reconstruction with FLA. Contact area, contact pressure, and peak force were evaluated in 4 positions: 90º of flexion in neutral, 90º of flexion plus internal rotation, 90º of flexion plus external rotation, and 20º of extension. A labral seal test was performed for both reconstruction techniques. The relative change from the intact condition (value = 1) was determined for all conditions and positions. PS restored contact area to at least 96% of intact (≥0. 96; range, 0. 96-0. 98) in all 4 positions, and FLA restored contact area to at least 97% (≥0. 97; range, 0. 97-1. 19). Contact pressure was restored to ≥1. 08 (range, 1. 08-1. 11) with the PS and ≥1. 08 (range, 1. 08-1. 10) with the FLA technique. Peak force returned to ≥1. 02 (range, 1. 02-1. 05) with PS and ≥1. 02 (range, 1. 02-1. 07) with FLA. No significant differences were found between the reconstruction techniques in contact area in any position (P.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Autograft ; Hip ; Labrum ; Polyurethane scaffold ; Reconstruction
Publicat a:	Orthopaedic Journal of Sports Medicine, Vol. 11 (february 2023) , ISSN 2325-9671

DOI: 10.1177/23259671221150632
PMID: 36846818

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