ankle injuries: presentation, work-up, differential diagnosis, and …forms.acsm.org/tpc2017/pdfs/10...
TRANSCRIPT
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Ankle Injuries: Presentation, Work-up, Differential Diagnosis,
and Treatment
Mary Lloyd Ireland, M.D. Associate Professor University of Kentucky Dept. of Orthopaedic Surgery and Sports Medicine Lexington, Kentucky www.MaryLloydIreland.com
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Learning Objectives: 1.! Present cases of acute injuries
showing PE, Imaging, and treatment. 2.! Improve diagnostic skills of acute
ankle injuries.
I have nothing to disclose.
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ACSM TPC 2017 www.marylloydireland.com/acsm_tpc_2017
565 Biomechanics of Gait 489 Functional Anatomy of the Knee and Leg 490 Examination and Imaging of the Knee and Leg 491 Acute Knee Ligament Injuries in Athletes
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Surgery of the Foot Roger A Mann Editor
CV Mosby 5th Edition 1986
Biomechanics of the Foot and Ankle by Roger A Mann Chapter 1
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Function
•! Propulsion •! Support •! Flexibility •! Rigidity •! Gait mechanics:
ankle and foot motions
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•!Stance phase (60%); Swing phase (40%) •!Double limb support (10%): both feet on ground
Walking Cycle
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Normal Gait is a Controlled Fall What happens to the Joints with Foot On Ground Foot Tibia
Talus
Foot
Dorsiflexion
Internally Rotates
Everts Pronation
D IR E P
Plantarflexion Externally Rotates
Inverts
Supination
P ER I S
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Gait analysis posterior view
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Ankle: Modified Hinge Joint
•! Bony configuration •! Mortise •! Circular Pretzel
•! Ligamentous stability •! ATF and CF laterally •! Deltoid superficial and deep medially •! Syndesmosis superiorly
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EUA Gross instability, right ankle
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•!Dense fibrous structure maintaining ankle mortise (tibiofibular articulation) •!Source of “high ankle sprain” •!Prolonged morbidity! •!Injury occurs from eversion, especially with the foot dorsiflexed •!1 mm lateral shift of talus within mortise reduces contact area 42%
Tibiofibular Ligament
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•! Superficial & deep component; functions as single structure
•! Primary resistance to eversion
Medial (Deltoid) Ligament
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•!Superficial deltoid fans out from the medial malleolus to insert on the:
•!Talus posteriorly •!Calcaneus medially •!Navicular anteriorly
•!Deep deltoid ligament •!Anterior fibers insert on the neck of the talus •!Posterior fibers insert on the posterior medial tubercle of the talus
Medial (Deltoid) Ligament
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Summary of Findings From the National Collegiate Athletic Association Injury Surveillance System on Foot and Ankle Injury.*
Sport Game Injuries Relating to the Ankle (%)
Game Injuries Relating to the Foot (%)
Men’s baseball 7.4 0 Women’s softball 10.3 0 Men’s basketball 26.2 2.6 Women’s basketball 24.6 2.4 Men’s football 15.6 1.1 Men’s lacrosse 11.3 0 Women’s lacrosse 22.6 1.3 Men’s soccer 18.8 4.2 Women’s soccer 19.4 2.7
*in Anderson, RB, Hunt KJ, McCormick JJk, “Management of Common Sports-Related Injuries About the Foot and Ankle,” JAAOS Sept. 2010, Vol. 18, No 9, 546-556. Table 1, p. 547.
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How I Treat. . .
•! Control swelling •! Brace •! Acutely and during the entire season •! Proprioception •! Core •! Prevent recurrent sprains •! ? Ankle sprain preventable ?
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Can we prevent ankle sprain? Even this simple question – Unknown by evidence-based studies. Prevent – not proven, but we can lessen severity . . . Maybe!
Bahr R. “Can we prevent ankle sprains?” In: MacAuley D, Best T, Evidence-Based Sports Medicine. London: BMJ Publishing Company, 2002, p. 481.
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Key Messages
•! The preventive effects of taping and bracing have been clearly documented, although the evidence is more convincing for players with previous ankle injury than for healthy athletes.
Bahr R. “Can we prevent ankle sprains?” In: MacAuley D, Best T, Evidence-Based Sports Medicine. London: BMJ Publishing Company, 2002, p. 484.
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Key Messages
•! The efficacy of wearing high-top shoes is unclear.
•! There is some evidence that balance training reduces the risk of ankle sprains in athletes with previous injury.
Bahr R. “Can we prevent ankle sprains?” In: MacAuley D, Best T, Evidence-Based Sports Medicine. London: BMJ Publishing Company, 2002, p. 484.
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•! Sprain ATF and/or CF •! Sinus Tarsi Syndrome •! Subtalar Joint •! Arthrosis Fracture •! Cuboid Subluxation •! Peroneal Dysfunction
LATERAL ANKLE PAIN
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Physical Exam of the Foot and Ankle
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#16173
19 YO basketball player Os vesalianum bilateral feet.
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Think About Peroneal Tendon Involvement If: •! Recurrent Ankle Complaints •! Sprain Not Getting Better •! Pain, Swelling Higher
in Peroneal Tendon Sheath
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In Acute Ankle Sprain, Assess Peroneal Function
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Physical Exam of the Foot and Ankle
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17 YO WM
High school Baseball/Football Player
C/O Repeated Inversion Ankle Sprains
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[William Brent Bradley Pre-Op.mpg] [William Brent Bradley Pre-Op.mpg]
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[William Brent Bradley Surg.mpg]
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18 YO Female Gymnast
•! Right ankle injury •! Landed awkwardly doing a back tuck •! Immediate pain and swelling, right ankle
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Initial X-rays
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Stress tests, L & R ankles
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Dx lateral talus fracture displaced Severe lateral ankle sprain
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Surgery
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Anterior Ankle Pain
•! DX •! Tibiotalar Impingement •! Loose Body
•! PE •! Pain on Palpation Anteriorly •! Palpable Osteophytes
•! Radiographs •! Forced Dorsiflexion Lateral View •! Document Loss of Dorsiflexion •! Amount Bone Causing Impingement
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Anterior Ankle Pain ‘Footballers Ankle’
McMurray, TT: Footballers Ankle, JBJS, 323:68, 1950 McMurray, TT: Footballers Ankle, JBJS, 323:68, 1950 Australian Football
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Who is the real footballer?
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•! Differential Diagnosis
•! FHL Tendinitis •! Posterior Impingement
•! Os Trigonum •! Posterior Process Talus
Fracture (Shepherds 1982)
Posterior Ankle Pain
Dancers Tendinitis
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Posterior Ankle Pain
•! Differential Diagnosis •! Posterior Process Talus Fracture –
Shepherd s Fracture •! Os trigonum large process versus fracture •! Tarsal Coalition •! Osteoid Osteoma
Flexor Hallucis Longus Tendinitis—intrinsic versus compressive due to bony impingement
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FHL Posterior Tendinitis
Impingement Impingement Impingement Location Posteromedial Posterolateral
Tenderness FHL Behind Fibula/ Posterior Ankle
Pain Motion Great Toe Plantar Flexion
Misdiagnosed Posterior Tibialis Peroneal Tendinitisas Tendinitis Os Trigonum
Radiographs Normal Present or Fracture
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Bony Impingement of the Ankle
From William G. Hamilton: Impingement Syndromes p. 39, The Foot and Ankle in Sport 1995, ed. By Donald E. Baxter, M.D.
MOTION CONTACT AREAS
Dorsiflexion Anteromedial Talus Tibial
Plantar Flexion Posterolateral Tibia
Os Calcis
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Medial Ankle Pain •! Differential Diagnosis
•! Deltoid Sprain •! Medial Malleolus Fracture •! Tendinitis
•! Posterior Tibialis •! Flexor Hallucis Longus
•! Osteochondral Talus Fracture •! Osteochondritis Dissecans
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•! Superficial & deep component; functions as single structure
•! Primary resistance to eversion
Medial (Deltoid) Ligament
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Posterior Tibial Tendon Dysfunction
Stages I II III Tendon Length Normal Elongated Elongated Hindfoot Normal Mobile Fixed Valgus Min. Valgus Deformity None Mild Mod – Severe Treatment Non-Op Transfer Subtalar Op Synovectomy FDL Arthrodesis
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14 YO Female
•! Soccer athlete •! Left ankle •! Acute lateral talar dome fracture •! Documented by plain films and bone •! Edema on MRI
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Initial X-Rays
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Talar Dome Fracture-45YO Golfer
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Osteochondral Talar Lesions
•! Osteochondritis Dissecans Male 3 : 1 Female Medial 2 : 1 Lateral
•! Etiologies •! Trauma •! Vascular •! Repetitive Loading
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Medial Malleolus
•! Left ankle: 18 yo went up for jump shot & felt pop & sudden onset of pain over medial aspect of ankle
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Conclusion
•! Think about the compartment injured and anatomy to make the correct diagnosis
•! Ankle is a modified hinge and exam is easy
•! Plain Radiographs are the initial images
•! Order MRI scan if patient is not improving
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The End Thank You!
Mary Lloyd Ireland, M.D. www.MaryLloydIreland.com Associate Professor University of Kentucky Dept. of Orthopaedic Surgery and Sports Medicine Lexington, Kentucky