Abstract
Purpose
The goal of this study was to evaluate the anatomy of the medial patellar retinaculum and the medial patellofemoral ligament (MPFL) to provide an anatomical validation of a pediatric reconstruction technique.
Methods
Fifteen knees were dissected to study the MPFL and its relationship with the medial patellar retinaculum and the femoral insertion of the medial collateral ligament (MCL). The distances between the insertions of the MPFL of eight knees, and the patellar insertion of the MPFL and the femoral insertion of the MCL of four knees, were measured during the flexion to evaluate the isometricity of the native and reconstructed MPFL.
Results
The medial patellar retinaculum includes four structures: the fascia, fibrous expansions of the vastus muscles, the MPFL and the medial patellomeniscal ligament. The femoral insertion of the MPFL was located just behind the femoral insertion of the MCL in 12 knees. During flexion, the distance between the insertion on the upper patella and the femoral insertion of the MPFL increased while the distance between the insertion on the lower patella and the femoral insertion of the MPFL decreased. The variation in the distances measured during the flexion was greater between the MPFL insertions (nsup = 6.5 mm, ninf = 6.5 mm) than between the patellar insertion of the MPFL and the femoral insertion of the MCL (n′sup = 2.5 mm, n′inf = 5.75 mm).
Conclusion
The MPFL is not isometric. Even though the results were obtained from knees of elderly specimens, this study demonstrates reconstruction of the MPFL should take into account its anatomy and biomechanical role in the knee.
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References
Aframian A, Smith TO, Tennent TD, Cobb JP, Hing CB (2016) Origin and insertion of the medial patellofemoral ligament: a systematic review of anatomy. Knee Surg Sports Traumatol Arthrosc Off J ESSKA 15:85. https://doi.org/10.1007/s00167-016-4272-1
Amis AA, Firer P, Mountney J, Senavongse W, Thomas NP (2003) Anatomy and biomechanics of the medial patellofemoral ligament. Knee 10:215–220
Chassaing V, Trémoulet J (2005) Medial patellofemoral ligament reconstruction with gracilis autograft for patellar instability. Rev Chir Orthop Reparatrice Appar Mot 91:335–340
Chotel F, Peltier A, Viste A, Chaker M, Bérard J (2012) La Patella: 15e Journées lyonnaises de chirurgie du genou. Sauramps Médical, Montpellier (Hérault)
Dufour M (2007) Anatomie de l’appareil locomoteur: Tome 1—Membre inférieur, 2e édition. Elsevier Masson, Issy-les-Moulineaux
Fujino K, Tajima G, Yan J, Kamei Y, Maruyama M, Takeda S, Kikuchi S, Shimamura T (2015) Morphology of the femoral insertion site of the medial patellofemoral ligament. Knee Surg Sports Traumatol Arthrosc 23:998–1003. https://doi.org/10.1007/s00167-013-2797-0
Hautamaa PV, Fithian DC, Kaufman KR, Daniel DM, Pohlmeyer AM (1998) Medial soft tissue restraints in lateral patellar instability and repair. Clin Orthop 349:174–182
Kang HJ, Wang F, Chen BC, Su YL, Zhang ZC, Yan CB (2010) Functional bundles of the medial patellofemoral ligament. Knee Surg Sports Traumatol Arthrosc Off J ESSKA 18:1511–1516. https://doi.org/10.1007/s00167-010-1090-8
Kapandji A-I, Judet T (2009) Anatomie fonctionnelle: Tome 2—Membre inférieur, 6e édition. Maloine, Paris
Mountney J, Senavongse W, Amis AA, Thomas NP (2005) Tensile strength of the medial patellofemoral ligament before and after repair or reconstruction. J Bone Jt Surg Br 87:36–40
Nomura E, Inoue M, Osada N (2005) Anatomical analysis of the medial patellofemoral ligament of the knee, especially the femoral attachment. Knee Surg Sports Traumatol Arthrosc 13:510–515. https://doi.org/10.1007/s00167-004-0607-4
Paturet G (1954) Traité d’anatomie humaine: Tome 2—Membres supérieur et inférieur, 7th edn. Masson, Paris
Philippot R, Boyer B, Testa R, Farizon F, Moyen B (2012) The role of the medial ligamentous structures on patellar tracking during knee flexion. Knee Surg Sports Traumatol Arthrosc 20:331–336. https://doi.org/10.1007/s00167-011-1598-6
Schindler OS, Scott WN (2011) Basic kinematics and biomechanics of the patello-femoral joint. Part 1: the native patella. Acta Orthop Belg 77:421–431
Schöttle PB, Schmeling A, Rosenstiel N, Weiler A (2007) Radiographic landmarks for femoral tunnel placement in medial patellofemoral ligament reconstruction. Am J Sports Med 35:801–804. https://doi.org/10.1177/0363546506296415
Smirk C, Morris H (2003) The anatomy and reconstruction of the medial patellofemoral ligament. Knee 10:221–227
Stephen JM, Lumpaopong P, Deehan DJ, Kader D, Amis AA (2012) The medial patellofemoral ligament: location of femoral attachment and length change patterns resulting from anatomic and nonanatomic attachments. Am J Sports Med 40:1871–1879. https://doi.org/10.1177/0363546512449998
Trojani C, Neyret P (2013) Ruptures de l’appareil extenseur du genou, fractures de rotules incluses. EMC. Appareil Locomoteur 8:1–12
Viste A, Chatelet F, Desmarchelier R, Fessy M-H (2014) Anatomical study of the medial patello-femoral ligament: landmarks for its surgical reconstruction. Surg Radiol Anat SRA 36:733–739. https://doi.org/10.1007/s00276-014-1270-1
Warren LF, Marshall JL (1979) The supporting structures and layers on the medial side of the knee: an anatomical analysis. J Bone Jt Surg Am 61:56–62
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CD and LG contributed to study design, realized dissections, contributed to data analysis and draft of the manuscript. CS, AC and SP made critical revisions to the manuscript. AH supervised the study, contributed to analysis and interpretation of data and made critical revisions to the manuscript. All the authors read and approved the final manuscript prior to submission.
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Decante, C., Geffroy, L., Salaud, C. et al. Descriptive and dynamic study of the medial patellofemoral ligament (MPFL). Surg Radiol Anat 41, 763–774 (2019). https://doi.org/10.1007/s00276-019-02234-7
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DOI: https://doi.org/10.1007/s00276-019-02234-7