Network Magazine Spring 2017 | Page 53

and/or injury. A lack of dorsiflexion refers to the inability of the lower leg to come forward over the foot and/or the foot to move toward the shins (i.e. failure of the ankle to bend/ flex correctly). When the structures that run across and on the outside of the foot (e.g. lateral longitudinal and transverse arches) are unable to do their jobs correctly because of a lack of dorsiflexion, it can also lead to foot pain (Bryant and Green, 2010; Price and Bratcher, 2010). Overpronation and a lack of dorsiflexion are inherently linked because when the foot/ankle are unable to bend/flex forward effectively (dorsiflex) during weig ht bearing activities, these structures collapse inward toward the midline of the body (overpronate) in order to displace the weight of the body. Therefore, one of the easiest ways to alleviate a client’s foot pain is to remedy their overpronation issues by assessing and improving their ability to dorsiflex (Houglum, 2016). 1 2 Knee extension Knee flexion Dorsiflexion Dorsiflexion Figure 1. Dorsiflexion and bent knee Figure 2. Dorsiflexion and straight knee 3 Assessments for lack of dorsiflexion The ability of the ankle to bend/flex forward (dorsiflex) so that weight can displace evenly over the entire foot is necessary both when the knee is bent, when squatting for example, and straight, such as when walking (see Figures 1 and 2). As such, evaluating your client’s ability to dorsiflex requires two assessments – one with their knee bent and one with their knee straight. 1. Bent knee assessment To assess dorsiflexion when the knee is bent, instruct your client to place themselves in a split-kneeling position with their hands on the wall in front of them for balance (see Figure 3). Coach them to align their hips so that they are parallel to the wall and push their front knee forward so it travels forward over that foot. Have them perform this movement with each foot/leg and evaluate which side is tighter, or feels more difficult to bend their ankle forward (dorsiflex). Watch that the client does not ‘cheat’ during this assessment by letting their ankle and knee collapse inward toward the midline (overpronating), and/or twisting their hips (i.e. not keeping them parallel to the wall) (Price and Bratcher, 2010; Cook, 2010). Make a note of any discrepancies or imbalances you, or your client, discover about their ability to dorsiflex with their knee bent. 2. Straight knee assessment To assess dorsiflexion when the knee is Figure 3. Assessing dorsiflexion (with knee bent) straight, instruct your client to stand in a split-stance standing posture with their hands on a wall in front of them for balance (see Figure 4). Coach them to align their hips so that they are parallel to the wall and straighten both feet so that they are pointing forward. Once in this position, instruct them to ‘stretch’ the calf muscle of the back leg by allowing their lower leg to travel forward over the foot (dorsiflex). Watch that the client does not raise their heel off the floor, collapse their ankle (overpronate) or rotate their hips during this movement. Ask them to assess both sides and evaluate which side feels more difficult to dorsiflex (i.e. bend their ankle forward without ‘cheating’ at their ankle or hips) (Price and Bratcher, 2010). Make a note of any discrepancies or imbalances you, or your client, discover about their ability to dorsiflex with their knee straight. 4 Figure 4. Assessing dorsiflexion (with knee straight) NETWORK SPRING 2017 | 53