Patellofemoral Pain After Arthroscopy : Muscle Atrophy Is Not Everything
Amestoy, Jorge (Parc de Salut MAR de Barcelona)
Pérez-Prieto, Daniel (Universitat Autònoma de Barcelona. Departament de Cirurgia)
Torres-Claramunt, Raúl (Hospital del Mar (Barcelona, Catalunya))
Sánchez-Soler, Juan Francisco (Hospital del Mar (Barcelona, Catalunya))
Leal Blanquet, Joan (Universitat Autònoma de Barcelona. Departament de Cirurgia)
Ares-Vidal, Jesús (Institut Hospital del Mar d'Investigacions Mèdiques)
Hinarejos Gómez, Pedro (Universitat Autònoma de Barcelona. Departament de Cirurgia)
Monllau García, Joan Carles (Universitat Autònoma de Barcelona. Departament de Cirurgia)

Fecha:	2021
Resumen:	It remains unclear as to why patellofemoral pain (PFP) appears in some patients after knee arthroscopy and what influence the quadriceps muscle has on its onset. To compare muscle thickness, neuromuscular contractility, and quadriceps femoris muscle strength between patients who develop PFP after arthroscopic partial meniscectomy and a control group and to compare functional outcomes between these entities. Cohort study; Level of evidence, 3. A prospective longitudinal cohort study was carried out on patients scheduled for arthroscopic partial meniscectomy. Patients were excluded if they had preoperative PFP, previous knee surgery, or additional surgical procedures (eg, meniscal repair or microfracture). The following were performed preoperatively: magnetic resonance imaging to quantify muscle thickness, surface electromyography to analyze electrical contractility, and an isokinetic study to assess the strength of the quadriceps femoris muscle. Patients also completed a Lysholm functional questionnaire. Six weeks after the index procedure, patients were questioned about the presence of PFP, and the same tests were repeated. The PFP group included patients who developed anterior knee pain postoperatively, while the control group included those who did not develop pain. Of 90 initial study patients, 20 were included in the PFP group (23. 8%) and 64 in the control group (76. 2%); 6 patients were lost to follow-up. Both study groups were comparable on all of the analyzed preoperative variables. Patients in the PFP group had worse results in terms of muscle thickness (9. 67 vs 16. 55 cm 2), electrical contractility (1226. 30 vs 1946. 11 µV), and quadriceps strength (12. 27 vs 20. 02 kg; all P <. 001). They also presented worse functional results on the Lysholm score (63. 05 vs 74. 45; P <. 001). Patients who developed PFP after arthroscopic partial meniscectomy had more quadriceps femoris muscle atrophy as well as a greater decrease in electrical contractility and muscle strength at 6 weeks postsurgically as compared with a control group. The PFP group also had worse postoperative functional results.
Derechos:	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.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Patellofemoral pain ; Anterior knee pain ; Knee arthroscopy ; Meniscectomy ; Quadriceps muscle atrophy ; Physical therapy
Publicado en:	Orthopaedic Journal of Sports Medicine, Vol. 9 (june 2021) , ISSN 2325-9671

DOI: 10.1177/23259671211013000
PMID: 34262977

8 p, 250.0 KB

El registro aparece en las colecciones:
Documentos de investigación > Documentos de los grupos de investigación de la UAB > Centros y grupos de investigación (producción científica) > Ciencias de la salud y biociencias > Institut de Recerca Sant Pau
Artículos > Artículos de investigación
Artículos > Artículos publicados