The foot and the ankle Flashcards
Anatomy and function of the foot and ankle:
The foot and ankle are the focal points to which the body weight is transmitted in ambulation and they are well tailored to that function
Heel and toe pads act as ____ _____
Shock absorbers
Joints are capable of making _____ ____
Fine adjustments
Both a ____ and a ______ joint
stable and mobile
Lumbar, SI jt, hip and knee can all contribute to ___ and _____ issues
foot and ankle
Ankle movements:
Dorsiflexion
dorsum aspect of the foot moves cephallically (towards the head)
Plantarflexion
Plantar surface of the foot moves caudally
Inversion
Plantar aspect of the foot moves towards the midline of the body
Eversion
Plantar aspect of the foot moves away from the midline of the body
Supination
Inversion of the heel, adduction of the forefoot and plantarflexion at the subtalar joint
In which position is the foot most stable?
Supination
Pronation
Eversion of the heel, abduction of the forefoot and dorsiflexion of the subtalar jt
In which position is the foot and ankle absorbing the ground reaction force
Pronation
what type of joint is the Talcrural Jt
hinge jt, formed by the talus which rests between the sitar ends of the tibia and fibula
The loose pack position of the talocrural jt is
10 degrees of plantarflexion
The closed packed position of the talocrural jt is
full dorsiflexion
The capsular pattern of the talocrural jt is
Plantarflexion then dorsiflexion
What type of jt is the subtalar jt
is modified plane jt (gliding jt) and is made up of the articulation between the talus and then calcaneus
What is the closed pack position of the subtalar jt
supination (no mm attach to the talus and therefore the ligaments are what limit eversion and elastic recoil is what will bring it back into inversion)
1st step in the case history, Questions to ask in determining the MOI
Determine the meachanism of injury (MOI) which is key in helping you develop your testing hypothesis
- What position was the foot in? Inverted/Eversion? Plantarflexed/dorsiflexed?
- Was there an overuse scenario?
- Was the injured work or activity related?
- Can the patient recreate the MOI on their uninjured side?
- Consider the surface and footwear?
Questions to ask in relevance to pain
- Onset and duration (AM, PM, after activities, etc)
- Site and spread (Local, diffuse, radiating, etc)
- Behaviour and symptoms (severity, sharp, dull, numbness, noises, etc)
Flick angle
12-18 degree of toeing out
Feiss line
Apex (highest point) of medial malleolus, plantar aspect of first MTP and navicular tuberosity. These 3 points should create a straight line in NWB and WB. If in WB it drops then the arch would be first (1/3rd of the way), second (2/3rds of the way), or third degree (resting on the floor) flat foot
What side are rule outs done to? and how are they performed?
affected side to jts above and below, performed active free with over pressure
Fractures- how to assess
use a tuning fork or compression or tapping beginning distal to site and moving closer to suspected fracture
Ankle x-ray is necessary if any of the following are present
- Inability to bear weight of the affected side
- Bone tenderness along the posterior aspect of the distal 6cm of either the medial or lateral malleolus
- point tenderness at the proximal base of the 5th metatarsal
- Pt tenderness over the navicular bome
Active free testing- how is the patient seated? and what are we looking for?
Long seated, can be done BL simultaneously, looking for willingness to move and differences BL