Chronic Ankle Pain Sharese M. White, MD LCDR MC USN Thank you’s for some slides: • Kevin deWeber, MD, FAAFP, FACSM • AAOS Instructional Course Lecture – JBJS Volume 92-A, Number 10, August 18, 2010 Anatomy Anatomy Anatomy Anatomy Anatomy ANKLE JOINT ROM • Dorsiflexion • Plantarflexion • Exam – check both active and passive SUBTALAR JOINT: Inversion and Eversion ROM: Inversion/Eversion Anterior Drawer Test (ATFL) Talar Tilt - ATFL/CFL Syndesmosis Injury Squeeze Test External Rotation Test Ankle Radiographs AP Lateral Mortise Lateral Ankle Sprains • Inversion injuries • Graded 1-3 – 1: no ligament laxity – 2: slight laxity – 3: complete ligament rupture • ATFL first CFL second PTFL last • ATFL 3rd-deg: + Anterior Drawer • ATFL & CFL 3rd-degr: + AntDrawer & Talar Tilt Chronic Pain after Ankle Sprain/Injury Inadequate Rehab Instability Talar Dome OCD Peroneal Tendon Injury Anterior Impingement PTT dysfunction FHL tendonitis Sinus Tarsi Syndrome Osteoarthritis Tarsal Tunnel Occult Fracture CRPS Achilles tendonitis Where is the pain? • • • • Anterior Lateral Posterior Medial Anterior Ankle Pain • Anterior ankle impingement – osseous or soft tissue • Osteophyte • Synovial tissue • Ligamentous tissue – “walking uphill” – Painful limited passive dorsiflexion – Tx – small heel lift, NSAIDs, ice, PT – Surgery for refractory cases Anterior Ankle Pain • Osteochondral talar lesions – Anterior pain – effusion • Acute – anterolateral – fractures • Chronic – posteromedial – Recurrent ankle sprains • Treatment – depends on stage – STRONGLY RECOMMEND ORTHOPEDIC CONSULTATION Anterior Ankle Pain • Nerve entrapment • Deep peroneal nerve – Branches into medial motor and lateral sensory branch 1cm proximal to joint line • Compressed by extensor retinaculum and EHB • Tx: – Steroid injection around nerve – Surgical release Lateral Ankle Pain • Chronic instability – Usually painless unless underlying lesion • OCD, peroneal tendon, loose bodies, etc. • Tx – physical therapy, proprioceptive training • Surgery for refractive cases Lateral Ankle Pain • Peroneal tendon injury – Tears – Subluxation – Peroneus quartus • 20% of population • Increased risk of synovitis • • • • Retromalleolar pain Look for hindfoot varus Eversion testing Tx – cast; surgery Lateral Ankle Pain • Sinus Tarsi Syndrome • Diagnosis of exclusion – Injection relieves pain • X-rays are normal • MRI – nonspecific inflammation • Tx – Steroid injection (US guided best) – operative debridement Lateral Ankle Pain • Occult fractures – Lateral talar process • Eversion moment on dorsiflexed axially loaded foot – Anterior calcaneal process • Inversion of plantarflexed ankle • Tx – depends on size of fragment – Surgery for fragment >1 cm and >2 mm displacement Posterior Ankle Pain • Posterior ankle impingement – Enlarged posterolateral talar tubercle – Steida process – Os trigonum • Repeated plantarflexion • Tx – immobilization followed by physical therapy • Surgery for refractory cases – excision of os trigonum – decompression of posterior talar process Posterior Ankle Pain • Achilles tendinitis – Paratenonitis – Noninsertional tendinosis – Insertional tendinosis and retrocalcaneal bursitis • Shoe wear, activity • Tx – Acute paratenonitis: relative rest – Midsubstance tendinopathy: eccentric rehab 3-6 mos • ? Dextrose prolotherapy – Insertional tendinopathy: nothing works very well • surgery after six months of conservative management • NO STEROID INJECTIONS!!! Medial Ankle Pain • Tarsal Tunnel Syndrome • Symptomatic entrapment of tibial nerve within the tunnel – Rule out space occupying lesion • Paresthesias on percussion (Tinel’s) • Dorsiflexion and eversion (Phalen’s) • Tx – Conservative: orthotics, steroid injection (US-guided) – Surgery for refractory cases Medial Ankle Pain • Posterior Tibial Tendon Dysfunction • Begins with inflammation, ends with dysfunction – “too many toes” sign – Single leg heel rise - fails • Tx – conservative (3 months)– boot/Arizona brace/cast • Surgery for refractory cases • NO STEROID INJECTIONS Posteromedial Ankle Pain • Flexor Hallucis Longus Tendonitis • Pain w/ passive toe motion • Cause: Repetitive push-off activities • Tx – rest/activity modification • Surgery for refractive cases • NO STEROID INJECTIONS!!! Review Time! • Question Text: A 36 year old female recreational soccer player presents with insidious onset of left posterior heel pain and a limp. She is wearing flip flops because shoes make the pain worse. Examination reveals swelling and erythema of the posterior heel. There is no palpable defect in the Achilles tendon and a Thompson test is negative. The most likely diagnosis is: Possible Answers: A. Stress fracture of the calcaneus B. Plantar fasciitis C. Achilles tendon avulsion D. Sural neuritis E. Retrocalcaneal bursitis Review Time! • Correct Answer: E Critique: Retrocalcaneal bursitis (also called Haglund’s syndrome) is associated with overuse and presents with pain behind the calcaneus. Examination reveals swelling and erythema of the posterior heel. A prominence, called a “pump bump” may be noticeable. Retrocalcaneal bursitis is associated with pain and tenderness anterior to the Achilles tendon, along the medial and lateral aspects of the posterior calcaneus. Plantar flexion of the foot and/or squeezing the bursa from side to side reproduces the patient’s complaint.A stress fracture of the calcaneus produces mid-calcaneal bony tenderness and occurs with acute overuse. The symptoms of plantar fasciitis include tenderness and pain underneath (plantar surface), rather than behind the heel. A pop is generally heard and felt along with a palpable defect in the tendon and a positive Thompson test with an Achilles tendon avulsion injury. Sural neuritis is rare and the result of direct trauma. A positive percussion sign over the nerve lateral to the Achilles tendon is diagnostic of sural neuritis. References: 1. Snider, R. K. (1997). Essentials of musculoskeletal care. USA: American Academy of Orthopaedic Surgeons. More Review Time! • Question Text: • A 22 year old dancer presents to clinic with pain over the posterior aspect of her ankle. On exam she is tender to palpation over the posteromedial ankle. • Provocative testing with compression over the posteromedial ankle with dorsiflexion of the great toe reproduces the pain. What is the most likely diagnosis? • • Possible Answers: • A. Flexor hallucis longus synovitis • B. Os trigonum syndrome • C. Hallux rigidus • D. Posterior tibial tendonitis • E. Peroneal tendonitis Even MORE Review Time! • • • • • • • • • • • • Correct Answer: A Critique: Tenosynovitis of the flexor hallucis longus (FHL) is most commonly descried in classical ballet dancers. It is the hyperflexed position of the ankle that causes compression of the tendon as it passes posterior to the subtalar joint complex. This most commonly presents as pain in the posterior medial ankle. On physical exam there is tenderness to palpation over the musculotendonous junction of the FHL. Pain can also by elicited by forced dorsiflexion of the ankle and first MTP joint simultaneously. Conservative treatment includes rest, anti-inflammatories, and physical therapy modalities. This should include specific FHL stretching exercises. In cases of recalcitrant pain, surgical decompression is warranted. References: 1. Michelson J, Dunn L. Tenosynovitis of the flexor hallucis longus: a clinical study of the spectrum of presentation and treatement. Foot Ankle Int, 2005;26(4):291-303. 2. Gould N. Stenosing tenosynovitisof teh flexor hallucis longus tendon at the great toe. Foot Ankle, 1981;2:46-48. 3. Hedrick, W; Mcryde, A. Posterior ankle impingement. Foot Ankle Int,1994;15:2-8