Osgood Schlatter Disease

The patient is a 12-year-old young man who plays tennis 5 times per week in training and competition. His parents made an appointment because he complained for weeks of pain in the front of his left knee. The pain became more and more intense, inhibiting him when he practices sports and bothering him when walking.


Osgood Schlatter

Biomechanical parameters


Swing phase

Ankle roll

How the solution is used in the practitioner’s daily activity?

Fabrice Millet uses DigitsolePro® for the dynamic analysis (walking or running depending on the patient). He collects data on the patient’s walking or running activity using the web interface available online at https://app.DigitsolePro.com.

The results are then presented to the patient, allowing the patient to integrate them into the treatment process and facilitating acceptance.

Does the practitioner use other movement analysis systems?

The practitioner uses a camera to analyse the activity of athletes and movement analysis software in 2 dimensions of movement.

What are the most frequently used parameters?

The sport podiatrist analyzes the gait line, the swing phase, and the ankle roll (absolute).

  • The Gaitline provides a quick overall view of the walk and shows what abnormalities may be detected. The contact times are indicated by step phase, allowing one to visualize a potential difference between the two sides and monitor the evolution.
  • The swing phase is used to determine propulsion ratio and the muscles that create  the propulsion. In this way, the symmetry  between the two legs  can be verified. The swing phase is also used to analyze the length of  the stride and the similarity between the two sides. These data help in advising patients on daily exercises to avoid asymmetry (strength training, proprioceptivity, etc.).
  • The ankle roll allows for the visualization angles when striking, flat footed, and during propulsion in specify corrections. The illustrative graphic is explained to patients, who can see their deformations and the differences between the two sides.

What information was collected for this patient?

The walking profile verifies whether there is shortening, either of the duration of contact time or of the length of the stride.

In this case, the stride lengths are equal and the contact times are very close, which shows us that the pain is currently well managed or well treated.

These parameters also make it possible to assess the patient’s pain.

The ankle roll is used to obtain the precise angles of deformation.

Based on these precise data, a corrective addition on the exterior of the foot will be placed in order to avoid slight supination of the midfoot, increasing the tension on the patellar tendon and the anterior tibial tuberosity.

What examinations were carried out to complete the analysis?

Fabrice Millet carried out his examinations in a conventional manner: questioning and examination while seated on a chair, examination standing and on one foot.

During the questioning, we learn that the patient plays tennis regularly and participates in tournaments.  

He also does physical education offered at his school. He has complained for several weeks of pain in the front of his left knee, the pain progressively preventing him from practicing sports and bothering him when walking.

What diagnosis was given?

Osgood-Schlatter disease is a growth disease that occurs in young adolescents who play sports that include frequent running and jumping.

The supination observed when walking causes an accentuation of the tension on the patellar tendon.

What treatment or solution was provided to the patient?

Since pain is essentially the most important indicator, the practitioner must advise whether or not to stop playing sports based on how bad the pain is. This young patient was advised to stop playing sports in light of different examinations, and stretching work was recommended for when the pain has disappeared.

Orthopedic soles were made, intended to absorb the maximum amount of shock and reposition and center the knee, so that the constraints on the patellar tendon are decreased.

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