Dance Injuries of the Foot and Ankle: Difference between revisions

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== Introduction ==
== Introduction ==
85% of dancers will have some form of musculoskeletal injury during career and approximately 50% occur in the ankle or foot. Even injuries higher up in the chain will have an effect on the lower limb. The foot is essential to a dancer as it it their base of support and the fundamental lever to propel in dynamic manoeuvres. It is an important shock absorber and offers the ballet dancer one of their essential forms of artistic expression.
85% of dancers will have some form of musculoskeletal injury during career and approximately 50% occur in the ankle or foot. Even injuries higher up in the chain will have an effect on the lower limb. The foot is essential to a dancer as it it their base of support and the fundamental lever to propel in dynamic manoeuvres. It is an important shock absorber and offers the ballet dancer one of their essential forms of artistic expression.
The incidence of injuries in dancers varies from 40% to 84%. These being mostly caused by low cardiovascular conditioning, articular hyper mobility, postural deviation, alteration in the body’s center of balance<ref name=":0">Cardoso AA, Reis NM, Marinho AP, Vieira MD, Boing L, Guimarães AC. [https://www.scielo.br/j/rbme/a/ZMwvSfMh6WSbBxZPhWGnf3k/?format=html&lang=en&stop=next Injuries in professional dancers: a systematic review.] Revista Brasileira de Medicina do Esporte. 2017 Nov;23:504-9.</ref>
“realized with amateur dancers, it shows that for each 1000 hours of training, the injuries incidence diagnosed was from 0.62 to 5.6 injuries per dancers. Bearing in mind that the technical demand for a professional dancers is even higher, it is considered that this number increases drastically into the professional contest”<ref name=":0" />
== Acute vs Overuse Injuries ==
* Acute
** Often attributed to poor technique and  incorrect execution of jumps and landing
** Dancer usually has an incident to report
** Many other contributing factors such as tiredness, fatigue or loss of balance
* Overuse
** Excessive use
** Repeated microtrauma


== Risk Factors ==
== Risk Factors ==
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* Poor rehabilitation
* Poor rehabilitation
* Anatomical posture
* Anatomical posture
* Poor training incl. low levels of muscular strength and power<ref name=":1">Skwiot M, Śliwiński Z, Żurawski A, Śliwiński G. [https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0253437 Effectiveness of physiotherapy interventions for injury in ballet dancers: A systematic review.] PLoS one. 2021 Jun 24;16(6):e0253437.</ref>
* Poor training resulting in poor muscular strength<ref name=":1">Skwiot M, Śliwiński Z, Żurawski A, Śliwiński G. [https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0253437 Effectiveness of physiotherapy interventions for injury in ballet dancers: A systematic review.] PLoS one. 2021 Jun 24;16(6):e0253437.</ref>
* Poor lumbopelvic control<ref name=":2">Biernacki JL, Stracciolini A, Fraser J, Micheli LJ, Sugimoto D. [https://journals.lww.com/cjsportsmed/Abstract/2021/03000/Risk_Factors_for_Lower_Extremity_Injuries_in.13.aspx?context=LatestArticles Risk factors for lower-extremity injuries in female ballet dancers: a systematic review]. Clinical journal of sport medicine. 2021 Mar 1;31(2):e64-79.</ref>
* Poor lumbopelvic control<ref name=":2">Biernacki JL, Stracciolini A, Fraser J, Micheli LJ, Sugimoto D. [https://journals.lww.com/cjsportsmed/Abstract/2021/03000/Risk_Factors_for_Lower_Extremity_Injuries_in.13.aspx?context=LatestArticles Risk factors for lower-extremity injuries in female ballet dancers: a systematic review]. Clinical journal of sport medicine. 2021 Mar 1;31(2):e64-79.</ref>
* Technical mistakes<ref name=":1" />
* Technical mistakes<ref name=":1" />
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* Dance style  
* Dance style  
* Shoe fit and style
* Shoe fit and style
* Psycho-physical condition of dancer
* Floor type<ref name=":0" /><ref name=":7">Campbell RS, Lehr ME, Livingston A, McCurdy M, Ware JK. [https://www.sciencedirect.com/science/article/abs/pii/S1466853X18305169 Intrinsic modifiable risk factors in ballet dancers: Applying evidence based practice principles to enhance clinical applications.] Physical Therapy in Sport. 2019 Jul 1;38:106-14.</ref>
* Environmental factors
** Floor type<ref name=":0" /><ref>Campbell RS, Lehr ME, Livingston A, McCurdy M, Ware JK. [https://www.sciencedirect.com/science/article/abs/pii/S1466853X18305169 Intrinsic modifiable risk factors in ballet dancers: Applying evidence based practice principles to enhance clinical applications.] Physical Therapy in Sport. 2019 Jul 1;38:106-14.</ref>
** The incidence of injuries in dancers varies from 40% to 84%. These being mostly caused by low cardiovascular conditioning, articular hyper mobility, postural deviation, alteration in the body’s center of balance<ref name=":0">Cardoso AA, Reis NM, Marinho AP, Vieira MD, Boing L, Guimarães AC. [https://www.scielo.br/j/rbme/a/ZMwvSfMh6WSbBxZPhWGnf3k/?format=html&lang=en&stop=next Injuries in professional dancers: a systematic review.] Revista Brasileira de Medicina do Esporte. 2017 Nov;23:504-9.</ref>
** “realized with amateur dancers, it shows that for each 1000 hours of training, the injuries incidence diagnosed was from 0.62 to 5.6 injuries per dancers. Bearing in mind that the technical demand for a professional dancers is even higher, it is considered that this number increases drastically into the professional contest”<ref name=":0" />
 
== Acute vs Overuse Injuries ==
 
* Acute
** Normally incorrect execution (improper jumps, landing) and poor technique
** Usually an incident to report
** Other factors such as tiredness, fatigue, loss of balance
* Overuse
** Excessive use
** Repeated microtrauma


== Additional Contributing Factors ==
== Additional Contributing Factors ==


* Transitioning from Part time to Full - -time or professional ballet<ref>Fuller M, Moyle GM, Hunt AP, Minett GM. [https://www.ingentaconnect.com/content/jmrp/jdms/2019/00000023/00000003/art00004 Ballet and contemporary dance injuries when transitioning to full-time training or professional level dance: a systematic review]. Journal of Dance Medicine & Science. 2019 Sep 1;23(3):112-25.</ref>
* Transitioning from part time to professional dancer<ref>Fuller M, Moyle GM, Hunt AP, Minett GM. [https://www.ingentaconnect.com/content/jmrp/jdms/2019/00000023/00000003/art00004 Ballet and contemporary dance injuries when transitioning to full-time training or professional level dance: a systematic review]. Journal of Dance Medicine & Science. 2019 Sep 1;23(3):112-25.</ref>
* The foot can affect the knee, hip, core musculature and spine
* The foot can affect the knee, hip, core musculature and spine
* TURNOUT
* Lack of turnout
* Biomechanical requirements<ref name=":2" /> (pointe and demipointe =full PF and 90 degrees MTP ext)
* Biomechanical requirements of pointe and demipointe which require full plantarflexion with 90 degrees metatarsal phalangeal joint extension  <ref name=":2" />
* Floor type
* Floor type<ref name=":0" /><ref name=":7" />
* Shoe type and fit
* The dancers body and their management
* The dancers body and their management
* Psychology and expectations of dancers
* Psychology and expectations of dancers
* One Common issue found that could lead to injury <ref>En Pointe: [https://www.orthocarolina.com/media/en-pointe-what-ballet-dancers-should-know-about-injury-prevention What Ballet Dancers Should Know About Injury Prevention]</ref>
* Decreased [[Triceps Surae|triceps surae]] (Gastrocs and Soleus) and Posterior Tibialis strength<ref name=":8" />
 
* Decreased plantar flexion active range of motion <ref name=":8">En Pointe: [https://www.orthocarolina.com/media/en-pointe-what-ballet-dancers-should-know-about-injury-prevention What Ballet Dancers Should Know About Injury Prevention]</ref>
decreased triceps surae/posterior tibialis strength and/or decreased plantar flexion active range of motion.


These deficits often contribute to faulty mechanics, including
'''Muscle weakness often results in:'''


* increased ankle inversion/eversion compensation (rolling in or out) in efforts to get en pointe and/or maintain position,
* Rolling in and out of the ankles (Increased ankle inversion/eversion)
* decreased stability once there, knuckling under (excessive interphalangeal joint flexion compensation)
* Decreased stability en pointe
* and/or decreased plantar flexion rom to allow ideal positioning of body over toes.  
* Decreased plantar flexion range of motion 


== Anterior Ankle Injuries ==
== Anterior Ankle Injuries ==
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** Often found in mature or retired dancers
** Often found in mature or retired dancers
* Tibial stress syndrome<ref name=":3" />
* Tibial stress syndrome<ref name=":3" />
* Tibial stress fracture  
* Tibial [[Stress Fractures|stress fracture]]
* Anterior ligament and tendon pathology esp
* Anterior ligament and tendon pathology  
** Commonly in the Extensor Hallucus Longus from trying to improve point, injuries surrounding ligaments and long-term instability
** Commonly in the Extensor Hallucus Longus tendon from trying to improve point, injuries surrounding ligaments and long-term instability
* Anterior capsule synovitis
* Anterior capsule synovitis
* Anterior impingement
* Anterior impingement
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** Educate the dancer on correct stretching, focus on strengthening intrinsic and extrinsic musculature
** Educate the dancer on correct stretching, focus on strengthening intrinsic and extrinsic musculature
** Address biomechanical faults and look higher up for compensations or weakness
** Address biomechanical faults and look higher up for compensations or weakness
** Mulligan Mobilisation with movement, Passive Accessory Movement, chair ankle rocker
** Mulligan Mobilisation with movement, Passive Accessory Movement, Chair Ankle Rocker
** Often responsive to conservative treatment.
** Often responsive to conservative treatment.
** Surgery is effective if condition has progressed far enough<ref name=":4">Khurana A, Singh I, Singh MS. [https://jassm.org/is-anterior-and-posterior-ankle-impingement-under-diagnosed-a-review/ Is anterior and posterior ankle impingement under-diagnosed? A review]. Journal of Arthroscopic Surgery and Sports Medicine. 2021 Jan 10;2(1):58-65.</ref>
** Surgery is effective if condition has progressed far enough<ref name=":4">Khurana A, Singh I, Singh MS. [https://jassm.org/is-anterior-and-posterior-ankle-impingement-under-diagnosed-a-review/ Is anterior and posterior ankle impingement under-diagnosed? A review]. Journal of Arthroscopic Surgery and Sports Medicine. 2021 Jan 10;2(1):58-65.</ref>
* Ballet specific considerations
* Ballet specific considerations
** Dance movements contributing =plie, rolling ankles, forcing turnout
** Dance movements contributing are the plie, forcing turnout and rolling ankles  
** Compensation=lifting up heel earlierh
** Compensation is seen with a dancer lifting up heel earlier in a plie


== Posterior Ankle Injuries ==
== Posterior Ankle Injuries ==
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** The prevalence of this injury in dancers is due to releves, jumps, turns, and pointe work
** The prevalence of this injury in dancers is due to releves, jumps, turns, and pointe work
** Can be caused by tying ribbons incorrectly across achilles tendon or from hard floors.
** Can be caused by tying ribbons incorrectly across achilles tendon or from hard floors.
** Choreograper from few jumps to lots of jumps
** A contributing factor is often changing of a choreographer, especially when they advocate for a high jumping routine. 


==== Posterior Ankle Impingement Syndrome ====
==== Posterior Ankle Impingement Syndrome ====
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== Lateral Ankle Injuries ==
== Lateral Ankle Injuries ==


* Lateral ankle sprains (common)<ref name=":6">Bodini BD, Lucenteforte G, Serafin P, Barone L, Vitale JA, Serafin A, Sansone V, Negrini F. [https://www.mdpi.com/2076-3417/10/1/155 Do grade II ankle sprains have chronic effects on the functional ability of ballet dancers performing single-leg flat-foot stance? An observational cross-sectional study.] Applied Sciences. 2020 Jan;10(1):155.</ref>
* Lateral ankle sprains<ref name=":6">Bodini BD, Lucenteforte G, Serafin P, Barone L, Vitale JA, Serafin A, Sansone V, Negrini F. [https://www.mdpi.com/2076-3417/10/1/155 Do grade II ankle sprains have chronic effects on the functional ability of ballet dancers performing single-leg flat-foot stance? An observational cross-sectional study.] Applied Sciences. 2020 Jan;10(1):155.</ref>
* Cuboid subluxation issues (rotational strain to bone following other issues)
* Cuboid subluxation issues
** Rotational strain to bone following other issues
* Sinus tarsi
* Sinus tarsi
* Peroneal tendon overuse and retinaculum stress
* Peroneal tendon overuse and retinaculum stress
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==== Lateral Ankle Sprain ====
==== Lateral Ankle Sprain ====


* Aggravated by  
* Aggravated by weak [[Triceps Surae]] (Gastrocs and Soleus) and Posterior Tibialis strength
* Symptoms are  
* Symptoms are  
* Treatment
* Treatment
Line 145: Line 144:


* Associated with the FHL<ref>Wentzell M. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6173219/ Conservative management of a chronic recurrent flexor hallucis longus stenosing tenosynovitis in a pre-professional ballet dancer: a case report.] The Journal of the Canadian Chiropractic Association. 2018 Aug;62(2):111.</ref> = primary dynamic stabiliser of medial ankle in pointe and demi pointe
* Associated with the FHL<ref>Wentzell M. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6173219/ Conservative management of a chronic recurrent flexor hallucis longus stenosing tenosynovitis in a pre-professional ballet dancer: a case report.] The Journal of the Canadian Chiropractic Association. 2018 Aug;62(2):111.</ref> = primary dynamic stabiliser of medial ankle in pointe and demi pointe
* Aggravated by  
* Aggravated by knuckling under (excessive interphalangeal joint flexion compensation)
* Symptoms are  
* Symptoms are  
* Treatment
* Treatment

Revision as of 15:25, 13 March 2022

Original Editor - Carin Hunter based on the course by Michelle Green-Smerdon
Top Contributors - Carin Hunter, Jess Bell, Kim Jackson, Olajumoke Ogunleye and Nupur Smit Shah

Introduction[edit | edit source]

85% of dancers will have some form of musculoskeletal injury during career and approximately 50% occur in the ankle or foot. Even injuries higher up in the chain will have an effect on the lower limb. The foot is essential to a dancer as it it their base of support and the fundamental lever to propel in dynamic manoeuvres. It is an important shock absorber and offers the ballet dancer one of their essential forms of artistic expression.

The incidence of injuries in dancers varies from 40% to 84%. These being mostly caused by low cardiovascular conditioning, articular hyper mobility, postural deviation, alteration in the body’s center of balance[1]

“realized with amateur dancers, it shows that for each 1000 hours of training, the injuries incidence diagnosed was from 0.62 to 5.6 injuries per dancers. Bearing in mind that the technical demand for a professional dancers is even higher, it is considered that this number increases drastically into the professional contest”[1]

Acute vs Overuse Injuries[edit | edit source]

  • Acute
    • Often attributed to poor technique and incorrect execution of jumps and landing
    • Dancer usually has an incident to report
    • Many other contributing factors such as tiredness, fatigue or loss of balance
  • Overuse
    • Excessive use
    • Repeated microtrauma

Risk Factors[edit | edit source]

  • Previous injuries
  • Poor rehabilitation
  • Anatomical posture
  • Poor training resulting in poor muscular strength[2]
  • Poor lumbopelvic control[3]
  • Technical mistakes[2]
  • Execution speed[2]
  • Choreographer
  • Dance style
  • Shoe fit and style
  • Floor type[1][4]

Additional Contributing Factors[edit | edit source]

  • Transitioning from part time to professional dancer[5]
  • The foot can affect the knee, hip, core musculature and spine
  • Lack of turnout
  • Biomechanical requirements of pointe and demipointe which require full plantarflexion with 90 degrees metatarsal phalangeal joint extension [3]
  • Floor type[1][4]
  • The dancers body and their management
  • Psychology and expectations of dancers
  • Decreased triceps surae (Gastrocs and Soleus) and Posterior Tibialis strength[6]
  • Decreased plantar flexion active range of motion [6]

Muscle weakness often results in:

  • Rolling in and out of the ankles (Increased ankle inversion/eversion)
  • Decreased stability en pointe
  • Decreased plantar flexion range of motion

Anterior Ankle Injuries[edit | edit source]

  • Anterior bone spurs
    • Often found in mature or retired dancers
  • Tibial stress syndrome[7]
  • Tibial stress fracture
  • Anterior ligament and tendon pathology
    • Commonly in the Extensor Hallucus Longus tendon from trying to improve point, injuries surrounding ligaments and long-term instability
  • Anterior capsule synovitis
  • Anterior impingement

Anterior Impingement Syndrome[edit | edit source]

  • Aggravated by repetitive forced dorsiflexion (Plie)
  • Symptoms are generally progressive in nature
  • Treatment
    • Educate the dancer on correct stretching, focus on strengthening intrinsic and extrinsic musculature
    • Address biomechanical faults and look higher up for compensations or weakness
    • Mulligan Mobilisation with movement, Passive Accessory Movement, Chair Ankle Rocker
    • Often responsive to conservative treatment.
    • Surgery is effective if condition has progressed far enough[8]
  • Ballet specific considerations
    • Dance movements contributing are the plie, forcing turnout and rolling ankles
    • Compensation is seen with a dancer lifting up heel earlier in a plie

Posterior Ankle Injuries[edit | edit source]

  • Posterior Ankle Impingement Syndrome
  • Achilles tendinopathy[9]
    • The prevalence of this injury in dancers is due to releves, jumps, turns, and pointe work
    • Can be caused by tying ribbons incorrectly across achilles tendon or from hard floors.
    • A contributing factor is often changing of a choreographer, especially when they advocate for a high jumping routine.

Posterior Ankle Impingement Syndrome[edit | edit source]

  • Often referred to as Dancers heel
  • Aggravated by forced plantarflexion and often coincides with FHL tendinopathy
  • Symptoms are
    • C/O pain and tenderness on the posterolateral aspect of the ankle on active plantar-flexion. Pain is exacerbated with axial loading as well as with great toe dorsiflexion as FHL pushes against the ossicles over its groove along the talus
  • Treatment
    • Educate the dancer on
    • Bony or soft tissue
    • Can be operated on[8][10]
  • Ballet specific considerations
    • biomechanics check - plie, grand plie, releve
    • stretch - hams, adductors, tib A, calves
    • strengthen - glutes, hamstrings, adductors, abductors
    • rehab- mobility crawls, isometric Single leg heel raise, eccentric single leg heel lowering

PAIS in Ballet[7]

  • In some sports - required periodically and suddenly in a passive manner (by external force, e.g., soccer during certain forms of kicking) or briefly in an active manner (e.g., gymnastics and other artistic sports),
  • In Ballet -  required in a controlled, persistent, extreme, active, and fully weightbearing manner.
  • When kicking a ball, the talo-crural and subtalar joints are non-weightbearing; hence, there is no tendency for the talus (talo-crurally) and calcaneus (subtalarly) to slide posteriorly and add to the impingement. Second, when kicking, the calcaneus is not pulled up by the triceps surae. That this is important is biomechanically logical and is illustrated by the fact that in PAIS testing (plantar flexion test) the pain will mainly be provoked if the calcaneus is pressed up simultaneous

Lateral Ankle Injuries[edit | edit source]

  • Lateral ankle sprains[11]
  • Cuboid subluxation issues
    • Rotational strain to bone following other issues
  • Sinus tarsi
  • Peroneal tendon overuse and retinaculum stress

Lateral Ankle Sprain[edit | edit source]

  • Aggravated by weak Triceps Surae (Gastrocs and Soleus) and Posterior Tibialis strength
  • Symptoms are
  • Treatment
    • Educate the dancer on
  • Ballet specific considerations
    • Dancer relies on feedback and stability from lateral lig[11]
    • biomechanics check – first position pile, releve, passe. Alignment[9] in demipointe or pointe
    • stretch -  hams, quads, adductors, iliopsoas, calves
    • Strengthen - glutes, dorsiflexors, everters
    • rehab- aggressive strengthening and proprioception, side plank tbd clamshell, SLB tap front around to back, resisted PF with eversion

Toe Injuries[edit | edit source]

  • Hallux Valgus
  • Hallux Riditis
  • Bunions
    • Strengthening intrinsic foot muscles
    • Correct alignment and toe spacers
  • Sesmoiditis
  • Metatarsalgia
  • 5th metatarsal fracture/ Dancers fracture/lisfrank fracture
  • Hammer toe
  • Blisters
  • Ingrown toe nails

Hallux Rigidis[edit | edit source]

  • Associated with the FHL[12] = primary dynamic stabiliser of medial ankle in pointe and demi pointe
  • Aggravated by knuckling under (excessive interphalangeal joint flexion compensation)
  • Symptoms are
  • Treatment
    • Educate the dancer on
  • Ballet specific considerations
    • Biomechanics check - parallel, first position, passe
    • stretch -iliopsoas, quads, adductors, calves
    • Strengthen - glutes, hamstrings, adductors, abductors
    • rehab-toe/ankle rocker w toe spacer, big toe flexion and extension, isometric theraband toe abduction, curl/flex with theraband, toe abduction, toe separation

Sesmoiditis[edit | edit source]

  • Aggravated by
    • Embedded within the FHB tendon and articulate with the plantar surface of the first metatarsal head
    • Technical errors – rolling in, pronation, forcing turnout
    • Collapsed arches = more pressure on sesmoids
    • Agg – Taking off and landing jumps esp without plie, rolling into Releve/demi pointe (more stressful than en pointe), walking with toe out gait/ in turn out
  • Symptoms are
    • Function – stabilise first MTPJ and improve power of the FHB tendon
    • SX – pain under first MT head on plantar forefoot, tenderness should move distally with DF of great toe
  • Treatment
    • Educate the dancer on
    • RX – padding to off-load area, use of stif soled shoes outside class (more support), assess and correct alignment, takes months to resolve
  • Ballet specific considerations
    • stretch - hams, glutes, adductors, roll calves
    • Strengthen - glutes, hams, adductors, iliopsoas, intrinsic foot muscles
    • rehab- tbd clamshells, foam roll ball squeeze leg lowering, prone hamstring curl to hip extension

5th Metatarsal Fracture[edit | edit source]

  • Often referred to as a Dancers Fracture
  • Aggravated by
  • Symptoms are twisting injury, differentiate to jones fracture (occurs further down the base, repetitive stress = surgery
  • Treatment
    • non –operative
    • Educate the dancer on
  • Ballet specific considerations
    • stretch -hams, glutes, iliopsoas, adductors, roll calves
    • Strengthen - glutes, hams, adductors, iliopsoas
    • rehab-side plank hip adduction, foam roll quadruped donkey kicks, quadruped car wheel

Plantar Fasciitis[edit | edit source]

  • Aggravated by This injury is often associated with repetitive jumping which is why it has such a high prevalence in dancers[9].
  • Symptoms
    • Heel pain with first steps in the morning
    • Heel pain after long periods of non-weight bearing
    • Tenderness to the anterior medial heel
    • Limited dorsiflexion and tight achilles tendon
    • A limp may be present or may have a preference to toe walking
    • Pain is usually worse when barefoot on hard surfaces and with stair climbing
  • Treatment: Conservative measures are the first choice
  • Ballet specific considerations
    • biomechanics check - plie, developpe, gait
    • stretch -iliopsoas, quads, adductors, calves
    • Strengthen -glutes, abductors, deep rotators
    • rehab- chair SL bridges, SL heel raises on stairs, ankle/toe rockers, strapping

For more specific physio treatment options please see Plantar Fasciitis page

Foot and Ankle Care[edit | edit source]

  • POINTEWORK SHOULD BE PROGRESSED SLOWLY AND ONLY COMMENCED ONCE READY/SCREENED
  • FOOT ALIGNMENT SHOULD BE MONITORED THROUGHOUT THE JUMPING SECTION WITH NO UNDUE PRONATION OF THE FOREFOOT
  • SIMPLE BALANCE EXERCISES SHOULD BE INCLUDED
  • INTRINSIC FOOT EXERCISES
  • CALF EXERCISES AND STRETCHED
  • WALK WITH NORMAL ANGLE OF GAIT TO OFFLOAD HIP ROTATORS, ie, not in turned out position

References[edit | edit source]

  1. 1.0 1.1 1.2 1.3 Cardoso AA, Reis NM, Marinho AP, Vieira MD, Boing L, Guimarães AC. Injuries in professional dancers: a systematic review. Revista Brasileira de Medicina do Esporte. 2017 Nov;23:504-9.
  2. 2.0 2.1 2.2 Skwiot M, Śliwiński Z, Żurawski A, Śliwiński G. Effectiveness of physiotherapy interventions for injury in ballet dancers: A systematic review. PLoS one. 2021 Jun 24;16(6):e0253437.
  3. 3.0 3.1 Biernacki JL, Stracciolini A, Fraser J, Micheli LJ, Sugimoto D. Risk factors for lower-extremity injuries in female ballet dancers: a systematic review. Clinical journal of sport medicine. 2021 Mar 1;31(2):e64-79.
  4. 4.0 4.1 Campbell RS, Lehr ME, Livingston A, McCurdy M, Ware JK. Intrinsic modifiable risk factors in ballet dancers: Applying evidence based practice principles to enhance clinical applications. Physical Therapy in Sport. 2019 Jul 1;38:106-14.
  5. Fuller M, Moyle GM, Hunt AP, Minett GM. Ballet and contemporary dance injuries when transitioning to full-time training or professional level dance: a systematic review. Journal of Dance Medicine & Science. 2019 Sep 1;23(3):112-25.
  6. 6.0 6.1 En Pointe: What Ballet Dancers Should Know About Injury Prevention
  7. 7.0 7.1 Rietveld AB. Performing arts medicine with a focus on Relevé in Dancers. Leiden University; 2017 Nov 28.
  8. 8.0 8.1 Khurana A, Singh I, Singh MS. Is anterior and posterior ankle impingement under-diagnosed? A review. Journal of Arthroscopic Surgery and Sports Medicine. 2021 Jan 10;2(1):58-65.
  9. 9.0 9.1 9.2 Batenhorst EZ. A Dancer’s View: Analysis and Prevention of Common Dance Injuries. 2020
  10. Grigoryev K. Comparison of Open and Endoscopic Surgical Procedures as a Treatment of Posterior Ankle Impingement Syndrome in Ballet Dancers: A Meta-Analysis (Doctoral dissertation, California State University, Fresno).
  11. 11.0 11.1 Bodini BD, Lucenteforte G, Serafin P, Barone L, Vitale JA, Serafin A, Sansone V, Negrini F. Do grade II ankle sprains have chronic effects on the functional ability of ballet dancers performing single-leg flat-foot stance? An observational cross-sectional study. Applied Sciences. 2020 Jan;10(1):155.
  12. Wentzell M. Conservative management of a chronic recurrent flexor hallucis longus stenosing tenosynovitis in a pre-professional ballet dancer: a case report. The Journal of the Canadian Chiropractic Association. 2018 Aug;62(2):111.
  13. Rhim HC, Kwon J, Park J, Borg-Stein J, Tenforde AS. A Systematic Review of Systematic Reviews on the Epidemiology, Evaluation, and Treatment of Plantar Fasciitis. Life. 2021 Dec;11(12):1287.