Abstract
Purpose of Review
Movement retraining in rehabilitation is the process by which a motor program is changed with the overall goal of reducing pain or injury risk. Movement retraining is an important component of interventions to address patellofemoral pain. The purpose of this paper is to review the methods and results of current retraining studies that are aimed at reducing symptoms of patellofemoral pain.
Recent Findings
The majority of studies reviewed demonstrated some improvement in patellofemoral pain symptoms and overall function. However, the degree of improvement as well as the persistence of improvement over time varied between studies. The greatest pain reduction and persistent changes were noted in those studies that incorporated a faded feedback design including between 8 and 18 sessions over 2–6 weeks, typically 3–4 sessions per week. Additionally, dosage in these studies increased to 30–45 min during later sessions, resulting in 177–196 total minutes of retraining. In contrast, pain reductions and persistence of changes were the least in studies where overall retraining volume was low and feedback was either absent or continual.
Summary
Faulty movement patterns have been associated with patellofemoral pain. Studies have shown that strengthening alone does not alter these patterns, and that addressing the motor program is needed to effect these changes. Based upon the studies reviewed here, retraining faulty patterns, when present, appears to play a significant role in addressing patellofemoral pain. Therefore, movement retraining, while adhering to basic motor control principles, should be part of a therapist’s intervention skillset when treating patients with PFP.
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References
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Smith BE, Selfe J, Thacker D, Hendrick P, Bateman M, Moffatt F, et al. Incidence and prevalence of patellofemoral pain: a systematic review and meta-analysis. PLoS One. 2018;13(1):e0190892. https://doi.org/10.1371/journal.pone.0190892.
Kannus P, Natri A, Paakkala T, Jarvinen M. An outcome study of chronic patellofemoral pain syndrome. Seven-year follow-up of patients in a randomized, controlled trial. J Bone Joint Surg Am. 1999;81(3):355–63. https://doi.org/10.2106/00004623-199903000-00007.
Lankhorst NE, Bierma-Zeinstra SM, van Middelkoop M. Factors associated with patellofemoral pain syndrome: a systematic review. Br J Sports Med. 2013;47(4):193–206. https://doi.org/10.1136/bjsports-2011-090369.
Utting MR, Davies G, Newman JH. Is anterior knee pain a predisposing factor to patellofemoral osteoarthritis? Knee. 2005;12(5):362–5. https://doi.org/10.1016/j.knee.2004.12.006.
Thomas MJ, Wood L, Selfe J, Peat G. Anterior knee pain in younger adults as a precursor to subsequent patellofemoral osteoarthritis: a systematic review. BMC Musculoskelet Disord. 2010;11:201. https://doi.org/10.1186/1471-2474-11-201.
Wilk KE, Davies GJ, Mangine RE, Malone TR. Patellofemoral disorders: a classification system and clinical guidelines for nonoperative rehabilitation. J Orthop Sports Phys Ther. 1998;28(5):307–22. https://doi.org/10.2519/jospt.1998.28.5.307.
Jayaram P, Kennedy DJ, Yeh P, Dragoo J. Chondrotoxic effects of local anesthetics on human knee articular cartilage: a systematic review. PM R. 2019;11(4):379–400. https://doi.org/10.1002/pmrj.12007.
• Powers CM, Witvrouw E, Davis IS, Crossley KM. Evidence-based framework for a pathomechanical model of patellofemoral pain: 2017 patellofemoral pain consensus statement from the 4th International Patellofemoral Pain Research Retreat, Manchester, UK: part 3. Br J Sports Med. 2017;51(24):1713–23. https://doi.org/10.1136/bjsports-2017-098717This consensus paper provides a comprehensive, thoroughly referenced, theoretical model for the biomechanical etiology of patellofemoral pain.
• Liao T-C, Keyak JH, Powers CM. Runners with patellofemoral pain exhibit greater peak patella cartilage stress compared with pain-free runners. J Appl Biomech. 2018;34(4):298–305 This paper concludes that elevated peak cartilage stress is seen in individuals with patellofemoral pain compared with pain-free individuals. Therefore, reducing this stress may lead to reduced pain.
Wille C, Lenhart R, Wang S, Thelen D, Heiderscheit B. Ability of sagittal kinematic variables to estimate ground reaction forces and joint kinetics in running. J Orthop Sports Phys Ther. 2014:1–17. https://doi.org/10.2519/jospt.2014.5367.
• Liao T-C, Powers CM. Tibiofemoral kinematics in the transverse and frontal planes influence the location and magnitude of peak patella cartilage stress: an investigation of runners with and without patellofemoral pain. Clin Biomech. 2019;62:72–8 Results of this study suggest that small changes in hip and knee alignments can result in large changes in patellofemoral contact stresses. This provides a rationale for retraining these mechanics when they are faulty.
• Neal BS, Lack SD, Lankhorst NE, Raye A, Morrissey D, van Middelkoop M. Risk factors for patellofemoral pain: a systematic review and meta-analysis. Br J Sports Med. 2019;53(5):270–81. https://doi.org/10.1136/bjsports-2017-098890This meta-analysis examined the biomechanical factors associated with patellofemoral pain. It concluded that patellofemoral pain was associated with hip adduction internal rotation and contralateral pelvic drop. These are often the targets of retraining.
Blond L, Hansen L. Patellofemoral pain syndrome in athletes: a 5.7-year retrospective follow-up study of 250 athletes. Acta Orthop Belg. 1998;64(4):393–400.
Willy RW, Davis IS. The effect of a hip-strengthening program on mechanics during running and during a single-leg squat. J Orthop Sports Phys Ther. 2011;41(9):625–32. https://doi.org/10.2519/jospt.2011.3470.
Snyder KR, Earl JE, O’Connor KM, Ebersole KT. Resistance training is accompanied by increases in hip strength and changes in lower extremity biomechanics during running. Clin Biomech (Bristol, Avon). 2009;24(1):26–34. https://doi.org/10.1016/j.clinbiomech.2008.09.009.
Winstein CJ, Pohl PS, Lewthwaite R. Effects of physical guidance and knowledge of results on motor learning: support for the guidance hypothesis. Res Q Exerc Sport. 1994;65(4):316–23. https://doi.org/10.1080/02701367.1994.10607635.
Winstein CJ. Knowledge of results and motor learning--implications for physical therapy. Phys Ther. 1991;71(2):140–9. https://doi.org/10.1093/ptj/71.2.140.
Noehren B, Hamill J, Davis I. Prospective evidence for a hip etiology in patellofemoral pain. Med Sci Sports Exerc. 2013;45(6):1120–4. https://doi.org/10.1249/MSS.0b013e31828249d2.
Willson JD, Davis IS. Lower extremity mechanics of females with and without patellofemoral pain across activities with progressively greater task demands. Clin Biomech. 2008;23(2):203–11. https://doi.org/10.1016/j.clinbiomech.2007.08.025.
Dierks TA. Proximal and distal influences on hip and knee kinematics in runners with patellofemoral pain syndrome during a prolonged run. J Orthop Sports Phys Ther. 2008. https://doi.org/10.2519/jospt.2008.2490.
Willy RW, Manal KT, Witvrouw EE, Davis IS. Are mechanics different between male and female runners with patellofemoral pain? Med Sci Sports Exerc. 2012;44(11):2165–71. https://doi.org/10.1249/MSS.0b013e3182629215.
Souza RB, Powers CM. Predictors of hip internal rotation during running: an evaluation of hip strength and femoral structure in women with and without patellofemoral pain. Am J Sports Med. 2009;37(3):579–87. https://doi.org/10.1177/0363546508326711.
Souza RB, Powers CM. Differences in hip kinematics, muscle strength, and muscle activation between subjects with and without patellofemoral pain. J Orthop Sports Phys Ther. 2009;39(1):12–9. https://doi.org/10.2519/jospt.2009.2885.
Willy RW, Witvrouw E, Manal K, Davis IS. Are lower extremity mechanics different between male and female runners with patellofemoral pain syndrome? Med Sci Sport Exerc. 2012;44(11):2165–71.
Powers CM. The influence of abnormal hip mechanics on knee injury: a biomechanical perspective. J Orthop Sports Phys Ther. 2010;40(2):42–51. https://doi.org/10.2519/jospt.2010.3337.
Huberti HH, Hayes WC. Patellofemoral contact pressures. The influence of q-angle and tendofemoral contact. J Bone Joint Surg (Am Vol). 1984;66(5):715–24.
Lee TQ, Morris G, Csintalan RP. The influence of tibial and femoral rotation on patellofemoral contact area and pressure. J Orthop Sports Phys Ther. 2003;33(11):686–93. https://doi.org/10.2519/jospt.2003.33.11.686.
Noehren B, Scholz J, Davis I. The effect of real-time gait retraining on hip kinematics, pain and function in subjects with patellofemoral pain syndrome. Br J Sports Med. 2010;45(9):691–6. https://doi.org/10.1136/bjsm.2009.069112.
Willy RW, Scholz JP, Davis IS. Mirror gait retraining for the treatment of patellofemoral pain in female runners. Clin Biomech. 2012;27(10):1045–51. https://doi.org/10.1016/j.clinbiomech.2012.07.011.
Kulmala JP, Avela J, Pasanen K, Parkkari J. Forefoot strikers exhibit lower running-induced knee loading than rearfoot strikers. Med Sci Sports Exerc. 2013;45(12):2306–13. https://doi.org/10.1249/MSS.0b013e31829efcf7.
Johnson CD, Outerleys J, Reilly JM, Tenforde AS, Davis IS. Increased ground reaction force load rates in runners with active patellofemoral pain. Med Sci Sports Exerc. 2019;51(supplement):438–9.
Cheung RT, Davis IS. Landing pattern modification to improve patellofemoral pain in runners: a case series. J Orthop Sports Phys Ther. 2011;41(12):914–9. https://doi.org/10.2519/jospt.2011.3771.
Roper JL, Harding EM, Doerfler D, Dexter JG, Kravitz L, Dufek JS, et al. The effects of gait retraining in runners with patellofemoral pain: a randomized trial. Clin Biomech (Bristol, Avon). 2016;35:14–22. https://doi.org/10.1016/j.clinbiomech.2016.03.010.
•• Dos Santos AF, Nakagawa TH, Lessi GC, Luz BC, Matsuo HTM, Nakashima GY, et al. Effects of three gait retraining techniques in runners with patellofemoral pain. Phys Ther Sport. 2019;36:92–100. https://doi.org/10.1016/j.ptsp.2019.01.006This randomized clinical trial demonstrated that symptoms improved in patients with PFP who underwent either forward trunk lean, transition to a forefoot strike pattern, or increasing cadence. Similar results in pain and function were noted between groups at the 6-month follow-up.
Teng HL, Powers CM. Sagittal plane trunk posture influences patellofemoral joint stress during running. J Orthop Sports Phys Ther. 2014:1–31. https://doi.org/10.2519/jospt.2014.5249.
•• Bonacci J, Hall M, Saunders N, Vicenzino B. Gait retraining versus foot orthoses for patellofemoral pain: a pilot randomised clinical trial. J Sci Med Sport. 2018;21(5):457–61. https://doi.org/10.1016/j.jsams.2017.09.187This randomized clinical trial determined that a gait retraining program to increase cadence had a clinically meaningful effect on runners with patellofemoral pain compared with foot orthoses intervention.
Esculier JF, Bouyer LJ, Dubois B, Fremont P, Moore L, McFadyen B, et al. Is combining gait retraining or an exercise programme with education better than education alone in treating runners with patellofemoral pain?A randomised clinical trial. Br J Sports Med. 2018;52(10):659–66. https://doi.org/10.1136/bjsports-2016-096988.
• Neal BS, Barton CJ, Birn-Jeffrey A, Daley M, Morrissey D. The effects & mechanisms of increasing running step rate: a feasibility study in a mixed-sex group of runners with patellofemoral pain. Phys Ther Sport. 2018;32:244–51. https://doi.org/10.1016/j.ptsp.2018.05.018This feasibility study determined that a step rate intervention in runners with patellofemoral pain was feasible with observed reductions in pain, improved biomechanical measures, and increased VMO activation.
Heiderscheit BC, Chumanov ES, Michalski MP, Wille CM, Ryan MB. Effects of step rate manipulation on joint mechanics during running. Med Sci Sports Exerc. 2011;43(2):296–302.
Willy RW, Buchenic L, Rogacki K, Ackerman J, Schmidt A, Willson JD. In-field gait retraining and mobile monitoring to address running biomechanics associated with tibial stress fracture. Scand J Med Sci Sports. 2016;26(2):197–205.
Lenhart RL, Thelen DG, Wille CM, Chumanov ES, Heiderscheit BC. Increasing running step rate reduces patellofemoral joint forces. Med Sci Sports Exerc. 2014;46(3):557–64. https://doi.org/10.1249/MSS.0b013e3182a78c3a.
Willson JD, Sharpe R, Meardon SA, Kernozek TW. Effects of step length on patellofemoral joint stress in females with and without patellofemoral pain. Clin Biomech. 2014;29:243–7.
Sinclair J. Effects of barefoot and barefoot inspired footwear on knee and ankle loading during running. Clin Biomech (Bristol, Avon). 2014;29(4):395–9.
Baldon Rde M, Piva SR, Scattone Silva R, Serrao FV. Evaluating eccentric hip torque and trunk endurance as mediators of changes in lower limb and trunk kinematics in response to functional stabilization training in women with patellofemoral pain. Am J Sports Med. 2015;43(6):1485–93. https://doi.org/10.1177/0363546515574690.
Rabelo N, Costa LOP, Lima BM, Dos Reis AC, Bley AS, Fukuda TY, et al. Adding motor control training to muscle strengthening did not substantially improve the effects on clinical or kinematic outcomes in women with patellofemoral pain: a randomised controlled trial. Gait Posture. 2017;58:280–6. https://doi.org/10.1016/j.gaitpost.2017.08.018.
• Salsich GB, Yemm B, Steger-May K, Lang CE, Van Dillen LR. A feasibility study of a novel, task-specific movement training intervention for women with patellofemoral pain. Clin Rehabil. 2018;32(2):179–90. https://doi.org/10.1177/0269215517723055This feasibility study demonstrates that individualised, task-specific movement retraining cues lead to improved pain, function, and kinematics in participants with PFP.
• Leibbrandt DC, Louw QA. Targeted functional movement retraining to improve pain, function, and biomechanics in subjects with anterior knee pain: a case series. J Sport Rehabil. 2018;27(3):218–23. https://doi.org/10.1123/jsr.2016-0164This small case series reports that individualised movement retraining delivered for 6 weeks improves pain, function, and biomechanics in participants with PFP.
Yemm B, Krause DA. Management of a patient with patellofemoral pain syndrome using neuromuscular training in decreasing medial collapse: a case report. Physiother Theory Pract. 2015;31(3):221–9. https://doi.org/10.3109/09593985.2014.982233.
Noehren B, Scholz J, Davis I. The effect of real-time gait retraining on hip kinematics, pain and function in subjects with patellofemoral pain syndrome. Br J Sports Med. 2011;45(9):691–6. https://doi.org/10.1136/bjsm.2009.069112.
Wulf G, Shea C, Lewthwaite R. Motor skill learning and performance: a review of influential factors. Med Educ. 2010;44(1):75–84. https://doi.org/10.1111/j.1365-2923.2009.03421.x.
• Futrell EE, Gross KD, Reisman D, Mullineaux DR, Davis IS. Transition to forefoot strike reduces load rates more effectively than altered cadence. J Sport Health Sci. 2019. https://doi.org/10.1016/j.jshs.2019.07.006This RCT in healthy individuals compared the reduction of vertical load rates, often associated with patellofemoral pain between two retraining groups. One was retrained to increase their cadence, while the other transitioned to a forefoot strike pattern. Both of these retraining strategies are used as an intervention for runners with patellofemoral pain.
•• Chan ZYS, Zhang JH, Au IPH, An WW, Shum GLK, Ng GYF, et al. Gait retraining for the reduction of injury occurrence in novice distance runners: 1-year follow-up of a randomized controlled trial. Am J Sports Med. 2018;46(2):388–95. https://doi.org/10.1177/0363546517736277This was a large-scale, prospective RCT aimed at retraining runners to reduce their impacts, which not only reduce their load rates but also exibited a 62% reduction in injuries compared with the control group. The retrained group demonstrated a 4-fold decrease in the number of runners who developed patellofemoral pain.
• Bowser BJ, Fellin R, Milner CE, Pohl MB, Davis IS. Reducing impact loading in runners: a one-year follow-up. Med Sci Sports Exerc. 2018;50(12):2500–6. https://doi.org/10.1249/MSS.0000000000001710This study demonstrated that high-impact loading can be reduced for up to a year, using real-time feedback of tibial shock. This is the only retraining study, to date, that has included a 1-year follow-up to determine the persistence of these changes.
Clansey AC, Hanlon M, Wallace ES, Nevill A, Lake MJ. Influence of tibial shock feedback training on impact loading and running economy. Med Sci Sports Exerc. 2014;46(5):973–81. https://doi.org/10.1249/MSS.0000000000000182.
Teng HL, Powers CM. Sagittal plane trunk posture influences patellofemoral joint stress during running. J Orthop Sports Phys Ther. 2014;44(10):785–92. https://doi.org/10.2519/jospt.2014.5249.
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Irene S. Davis, Adam S. Tenforde, Bradley S. Neal, Jenevieve Roper, and Richard W. Willy declare that they have no conflict of interest.
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This article is part of the Topical Collection on Non-Operative Management of Anterior Knee Pain
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Davis, I.S., Tenforde, A.S., Neal, B.S. et al. Gait Retraining as an Intervention for Patellofemoral Pain. Curr Rev Musculoskelet Med 13, 103–114 (2020). https://doi.org/10.1007/s12178-020-09605-3
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DOI: https://doi.org/10.1007/s12178-020-09605-3