Foot Problems Flashcards
What is the common word for hallux valgus?
Bunions
What is the aetiology of hallux valgus?
Genetic (foot shape runs in families)
Footwear (high heels push the forefoot into wedge)
Most common in females
What symptoms are caused by hallux valgus?
Pressure symptoms from shoe wear
Painful lump
Pain from toes crossing over
Metatarsalgia
What is the pathogenesis of hallux valgus?
Lump is from swollen bursa and osseous anomaly on MT head
Lateral angulation of big toe
Tendon pull reaiigned to lateral of central rotation of toe worsening deformity
Viscous cycle –> inc. pull –> inc. deformity
Sesmoid bones sublux
As deformity progresses –> abnormalities of lesser toes
What is used to diagnose hallux valgus?
Clinical diagnosis and Xray used (look for appropriate signs, e.g. inc. MT angle, sublux sesmoids etc.)
Exclude assoc. Degen. change
How do you treat hallux valgus non-operatively?
Orthotics, shoe wear, activity modification, analgesia
How do you treat hallux valgus operatively?
Release lateral soft tissue
Osteotomy 1st MT +/- proximal phalanx (recurrence inevitable)
What is hallux rigidus?
Stiff big toe
OA of 1st toe
In which groups of people does it occur?
Peak in young people and 70-80s
What is the aetiology of hallux ridigus?
?multiple episodes of microtrauma –> OA
?Genetic (typical shape of metatarsal head slightly pointed rather than rounded)
What are the symptoms of hallux rigidus?
May be asymptomatic
Pain (esp. on extreme dorsiflexion as this is when osteophytes rub against each other)
Restricted RoM
How is hallux rigidus diagnosed?
Clinical
Xray - look for features of OA (subchondral cysts, loss of joint space etc.)
How do you manage hallux rigidus non-operatively?
Orthotics, shoe wear, analgesia, activity modification
How do you manage hallux rigidus operatively?
Gold standard is arthrodesis
May also do arthroplasty or cheilectomy
What is cheilectomy?
Removal of osteophytes
What is the appearance of claw toes?
Hyperextended MTPJ, flexed DIP and PIP
What is the appearance of hammer toes?
Flexed PIP, straight/hyperextended PIP
What is the appearance of mallet toe?
Flexed DIP
What symptoms can occur from lesser toe deformities?
Pain (metatarsalgia) on plantar side
Deformity
How can you manage lesser toe deformities non-operatively?
Orthotics, activity modification, shoe wear, analgesia
How can you manage lesser toe deformities operatively?
Flexor –> extensor transfer
Fusion of IP joint
Release of MTP joint
Shortening osteotomy of metatarsal
What is Morton Neuroma?
Mechanically induced degenerative neuropathy (e.g. freq. wearing of heels) leading to common digital nerve becoming relatively tethered to one metatarsal and movement of the adjacent metatarsal causes mechanical shearing
IT IS A THICKENING OF THE NERVE
Where does the common plantar digital nerve run and what is its function?
Runs between MTs and supplies sensation to the skin
Where does Morton neuroma most commonly occur?
2nd and 3rd webspace (as these are the smallest gaps)