Hamstring Strain Injuries: Lessons from Personal Experience and the Latest Research

Hamstring Strain Injuries: Lessons from Personal Experience and the Latest Research

Recently, in an effort to keep the ballooning effects of the all-you-can-eat buffet at bay during my Cricket Australia Indian tour, I ramped up my high-intensity running load. Things were going splendidly — four days of high-intensity running under my belt — until day five, when 90% of the way through a very intense interval session, I tore my hamstring.

I felt the tell-tale sensation so many of my patients describe: a sharp tearing and retraction sensation in my outer thigh while sprinting. I had to pull up immediately and iced the injury straight away. You’ll be happy to hear that I’ve since fully recovered. No longer ‘gun shy’ at my top speeds (which, admittedly, are not that fast!), my strength has vastly improved, and I’m back running at full capacity.

Having treated countless hamstring injuries through my long involvement in recreational, semi-elite, and elite sport — especially with Cricket Australia teams and the Aspley Hornets NEAFL squad — this experience gave me even deeper appreciation for how tricky these injuries can be. Hamstring strains are one of the most common injuries in running athletes, responsible for significant downtime and lost performance. Hamstring injuries have remained the most prevalent injury in professional AFL for the past 21 consecutive seasons (Orchard et al., 2013), with the average 2012 injury costing clubs over $40,000 per player!

Understanding Hamstring Injury Mechanisms

Most hamstring tears occur during the late-swing phase of running, where the hamstring undergoes rapid lengthening while producing high forces (Danielsson et al., 2020). Key risk factors include:

  • High eccentric loading demands.

  • Poor neuromuscular control.

  • Muscle imbalances (particularly hamstrings vs quadriceps).

  • Fatigue — as evidenced by my own injury, occurring late in a demanding session!

Importantly, the long head of biceps femoris is the most commonly injured muscle, partly due to its higher proportion of fast-twitch fibers and its anatomical position under stretch during running (Martin et al., 2022).

Fatigue, poor trunk/pelvic control, and sudden spikes in high-speed running are emerging as significant contributors to hamstring strain risk, particularly in field and court sports (Martin et al., 2022).

Preventing Hamstring Injuries

The good news is, hamstring injuries can often be prevented with smart training. Strengthening the hamstrings through eccentric exercises like Nordic hamstring curls and single-leg Romanian deadlifts has been shown to reduce injury rates significantly (Al Attar et al., 2017; Martin et al., 2022).

Effective prevention programs should also include:

  • Agility and trunk stabilization exercises — not just strength work (Martin et al., 2022).

  • Warm-up routines with dynamic stretching and sport-specific drills.

  • Monitoring high-speed running loads to avoid sudden spikes in intensity.

Addressing muscle imbalances is key too. Maintaining a healthy strength ratio between the quadriceps and hamstrings — and ensuring good trunk and gluteal control — promotes optimal biomechanics and reduces injury risk (Martin et al., 2022).

Recovering Well After a Hamstring Injury

A proper recovery should include:

  • Early management: Controlling swelling and pain with ice and appropriate activity modification.

  • Progressive eccentric strengthening: Integrated carefully to build resilience.

  • Functional rehabilitation: Sprinting drills, agility work, and sport-specific movements are crucial before returning to full play (Martin et al., 2022).

Interestingly, studies show athletes who follow programs that include eccentric training and trunk stability work have lower reinjury rates than those who just focus on basic strength and stretching (de Visser et al., 2012; Martin et al., 2022).

Return-to-play decisions should be made carefully. Factors like strength symmetry, absence of pain, and readiness for high-speed running should all be considered to reduce the risk of reinjury, which can be as high as 30% otherwise (Martin et al., 2022).

Final Thoughts

Even as a physio, my personal hamstring tear was a stark reminder that fatigue, progressive loading, and structured rehab are vital ingredients for both prevention and recovery. Whether you’re a weekend warrior, a professional cricketer, or just trying to beat the buffet, hamstring health is crucial.

If you’d like help strengthening your hamstrings, managing an existing injury, or optimising your running and performance, feel free to reach out. I (and my hamstrings) would be happy to help!

Till next time, Praxis what you Preach!

Backed by evidence. Trusted by athletes. Here for every body.

References

  • Al Attar, W.S.A., et al. (2017). The effectiveness of injury prevention programs in reducing the incidence of hamstring injuries in soccer players: a systematic review and meta-analysis. Journal of Physiotherapy, 63(1), 11–17.

  • Danielsson, B., et al. (2020). Mechanisms of hamstring strain injury: current concepts. Sports Medicine, 50(4), 669–682.

  • Martin, R.L., et al. (2022). Hamstring strain injury in athletes: Clinical Practice Guidelines. Journal of Orthopaedic & Sports Physical Therapy, 52(3), CPG1–CPG44.

  • Orchard, J.W., et al. (2013). AFL Injury Report 2012.

Jumper’s Knee (Patellar Tendinopathy)

Jumper’s Knee (Patellar Tendinopathy)

Do you play a jumping sport such as volleyball, basketball or AFL? Have pain in the front of your knee when jumping, landing or changing direction? Have you lost some jumping power recently? Well read on friends as you may have a grumbly knee tendon.

Summary:

  • Patellar tendinopathy is summarised clinically as pain and dysfunction in the patellar tendon
  • Most commonly affects jumping athletes from adolescence to early middle age.
  • Return to sport can be slow with physio useful as a front line management tool
  • Often requires prolonged rehabilitation centred around education, strength training and load management

Jumper’s knee (or patellar tendinopathy) as its name suggest predominantly affects athletes who engage in sports which require large volumes of jumping. Jumping dynamically loads the knee and places large loads on the patellar tendons due the large and repeated requirements of the thigh muscles (quadriceps). These include sports that require repeat jump / landing efforts and/or high volumes of load during training and competition. Elite adolescent male athletes tend to be at a higher risk, especially if you play volleyball.

Mid Potion Achilles Tendinopathy Location

Like most injuries, patellar tendinopathy reflects an overload of the tissue and a failed healing response. Tendons tend to most susceptible to long periods of dynamic loading given their role in storing and releasing energy like a spring. The stiffer the spring, the more effective the spring and the more punishment it can take before the function deteriorates.

This injury is one that can be mild or moderate in nature and as such allow playing to some degree. As such, player’s tend to not to miss a lot of games like more “traditional” injuries such as ankle sprains or hamstring tears. It can typically slowly present and have a “warm up phenomena” (as in it can get better during a game), however aches after activity and the next morning. The pain is often at the very bottom of the knee cap, and on the space between the kneecap and the top of the shin bone where the tendon lies.

Key management strategies include ensuring the correct diagnosis and an understanding of tendon pathology (for more on tendon pathology, check out this blog). From there, pain management strategies and workload management is a key tenant to rehabilitation. Above and beyond workload management and good patient education, we at Praxis Physio also test the strength and range of the hip, knee and ankle musculature as well as jumping / landing biomechanics to understand where the likely reasons are for your knee pain.

After a comprehensive assessment, targeted and graduated strengthening is provided. The premise of these early phases are to reduce pain, improve strength, improve function, increase power (specifically the energy storage potential of the tendon) then finally sports specific training and management on symptoms.

As someone who has had an 18 month history of patellar tendinopathy, I personally can attest to the frustration this injury provides. I made many mistakes along my rehabilitation journey – though this was before I was a physiotherapist and took a clinical interest in tendinopathies. Thankfully, the research has come a long way in the last decade, so if you are having ongoing knee pain that you suspect is jumper’s knee, book in with us so we can get you jumping back to your best.

Until next time, Praxis what you Preach.

Stephen Timms

Chronic Groin Pain (Athletic Pubalgia)

Chronic Groin Pain (Athletic Pubalgia)

GROIN PAIN

Groin pain, referred to also as athletic pubalgia, is a common problem for a number of athletes, particularly those who engage in sports that require specific use (or overuse) of lower abdominal muscles and the proximal muscles of the thigh. Predominantly, these activities centre around kicking sports such as AFL and soccer, as well as long distance running. Ice hockey is also a well renowned sport in which chronic groin pain occurs. All these sports involve repetitive energetic kicking, twisting, turning or cutting movements, which are all risk factors for causing pubalgia.

SUMMARY:

  • Four structures are commonly implicated in the causes of groin pain
  • Adductor muscles
  • Pubic bone
  • Abdominal wall
  • Iliopsoas
  • Understanding which of these four structures is causing your pain is key in effective management
  • Exercise therapy and activity modifications should be the mainstay of treatment
  • Absolute rest has been shown to be ineffective
  • Steady gradual progressions through strength and function, tailored to your goals, is key to successful management
Mid Potion Achilles Tendinopathy Location

ROLE OF HIP ADDUCTORS (groin muscles)

Similar to other joints in the body, the hip relies on muscular control for stability and movement. At the hip, there are five key planes of movement; flexion, extension, abduction, adduction and rotation.

The adductor muscles are a large group of muscles located on the inner side of the thigh, attaching from below the knee, along the shaft of the femur and into the pubic bone of the pelvis.

While acute tears of the adductor muscle is common, more long standing pain is usually the result of an overload of the adductor tendon that attach to the pelvis. This is called an adductor tendinopathy. Adductor enthesopathy is common disorder which effects the bony attachment point of the tendon, with a slight structural difference from tendinopathy, however, management is similar in both cases

MANAGEMENT OPTIONS

Exercise:

Strength and functional based exercise are the core management strategies for adductor tendinopathy, and have been shown to increase function, decrease pain and reduce likelihood of injury [4].

Activity Modification:

Activity modification, especially in the acute phase or when symptoms are significantly affecting function, is key in reducing load on the affected structures and allowing tissues to adapt. [1]

Rest:

While activity modification is important, absolute rest has been shown to be ineffective in the management of adductor tendinopathy, and does not promote adequate tissue repair. [1,2]

Other:

Other conservative measures such as manual therapy, electrotherapy and stretching have been [1] explored, with reduced effect compared exercise prescription. Surgical management is also a potential option, with some positive results emerging for groin pain, though specific evidence [10] around adductor tendinopathy is limited. [10]

WHY IS EXERCISE IMPORTANT?

Exercise has been shown to increase tendon turnover, meaning in the first 24-36 hours there is a reduction in tendon integrity, but after that there is an overall increase in integrity and strength. Other benefits include: increased blood flow, increase in growth factors, and a reduction in altered pain processes in the brain [14].

WHAT’S THE BEST EXERCISE?

Isometric exercise has been shown to be effective in short term pain relief. Current evidence is unclear as to the best long term exercise strategies, with evidence supporting both eccentric and heavy-slow isotonic exercise. [12]

EXERCISE PLAN

The Copenhagen Adductor Program [9], with the below dosage, has been shown to significantly improve adductor strength, as well as being effective in groin injury prevention. It is important to note that though the program is eight weeks long, most effective tendon[12] adaptations take ≥ 12 weeks, and a tailored dosage should be discussed with your physiotherapist towards the end stage of rehabilitation.

Depending on how the symptoms affect your function, a reduction in training, running and kicking may also be required. Example progressions are noted below in the running program, in order of loading on adductors.

ADDITIONAL STRENGTH AND PROGRAMS

While targeted strengthening to the adductors is key, global strengthening around the hip may also aid in a reduction of loading to the tendon. Thorough assessment of your strength through all five movements noted previously is needed, as well as a tailored training program to resolve any discrepancies.

As symptoms reduce and function improves, part practice of painful activities, can be beneficial to reload structures, for example, banded kicking movements in preparation for return to soccer.

SUMMARY

In chronic adductor tendinopathy, tendon adaptations take time. It is important to understand this as you begin your rehab journey and not progress more than your body can tolerate. Steady gradual progressions through strength and function, tailored to your goals, is key to successful management.

As always, if you have a history of groin pain or are concerned about performance in your chosen sport, contact us today and chat to one of our friendly and knowledgeable physiotherapist to ensure you can Prevent. Prepare. Perform. Alternatively you can book online here

Till next time, Praxis what you Preach

Team Praxis

 

References: 

  1.  Almeida, M.O., et al., Conservative interventions for treating exercise‐related musculotendinous, ligamentous and osseous groin pain. Cochrane Database of Systematic Reviews, 2013(6).
  2. Bohm, S., F. Mersmann, and A. Arampatzis, Human tendon adaptation in response to mechanical loading: a systematic review and meta-analysis of exercise intervention studies on healthy adults. Sports Medicine – Open, 2015. 1(1): p. 7.
  3.  Brukner, P., Brukner & Khan’s clinical sports medicine / Peter Brukner … [et al.]. Sports medicine series, ed. K. Khan. 2012, North Ryde, N.S.W: McGraw-Hill Australia.
  4. Charlton, P.C., et al., Exercise Interventions for the Prevention and Treatment of Groin Pain and Injury in Athletes: A Critical and Systematic Review. Sports Med, 2017. 47(10): p. 2011-2026.
  5. Frizziero, A., et al., The role of eccentric exercise in sport injuries rehabilitation. Br Med Bull, 2014. 110(1): p. 47-75.
  6. Griffin, V.C., T. Everett, and I.G. Horsley, A comparison of hip adduction to abduction strength ratios, in the dominant and non-dominant limb, of elite academy football players. Journal of Biomedical Engineering and Informatics, 2015. 2(1): p. 109.
  7. Haroy, J., et al., The Adductor Strengthening Programme prevents groin problems among male football players: a cluster-randomised controlled trial. Br J Sports Med, 2019. 53(3): p. 150-157.
  8. Harøy, J., et al., Infographic. The Adductor Strengthening Programme prevents groin problems among male football players. British Journal of Sports Medicine, 2019. 53(1): p. 45.
  9. Haroy, J., et al., Including the Copenhagen Adduction Exercise in the FIFA 11+ Provides Missing Eccentric Hip Adduction Strength Effect in Male Soccer Players: A Randomized Controlled Trial. Am J Sports Med, 2017. 45(13): p. 3052-3059.
  10. Jorgensen, S.G., S. Oberg, and J. Rosenberg, Treatment of longstanding groin pain: a systematic review. Hernia, 2019.
  11. Kohavi, B., et al., Effectiveness of Field-Based Resistance Training Protocols on Hip Muscle Strength Among Young Elite Football Players. Clin J Sport Med, 2018.
  12. Lim, H.Y. and S.H. Wong, Effects of isometric, eccentric, or heavy slow resistance exercises on pain and function in individuals with patellar tendinopathy: A systematic review. Physiother Res Int, 2018. 23(4): p. e1721.
  13. Machotka, Z., S. Kumar, and L.G. Perraton, A systematic review of the literature on the effectiveness of exercise therapy for groin pain in athletes. Sports Med Arthrosc Rehabil Ther Technol, 2009. 1(1): p. 5.
  14. Magnusson, S.P., H. Langberg, and M. Kjaer, The pathogenesis of tendinopathy: balancing the response to loading. Nat Rev Rheumatol, 2010. 6(5): p. 262-8.
  15. Rio, E., et al., Tendon neuroplastic training: changing the way we think about tendon rehabilitation: a narrative review. British Journal of Sports Medicine, 2016. 50(4): p. 209.
  16. Thorborg, K., et al., The Copenhagen Hip and Groin Outcome Score (HAGOS): development and validation according to the COSMIN checklist. Br J Sports Med, 2011. 45(6): p. 478-91.
  17. Wei, A.S., et al., The effect of corticosteroid on collagen expression in injured rotator cuff tendon. The Journal of bone and joint surgery. American volume, 2006. 88(6): p. 1331-1338.