More information: Kazuki Kuriyama et al, Leg stiffness adjustment during hopping by dynamic interaction between the muscle and tendon of the medial gastrocnemius, Journal of Applied Physiology (2025).

Clinical examination often reveals tenderness over the medial head of gastrocnemius ... Finally other rarer causes of exercise induced leg pain are discussed, namely muscle hernia, popliteal artery ...

Medial tibial stress syndrome (MTSS ... Broadly, it represents exertional lower leg pain centred on the posteromedial tibial border and being diffuse/linear (greater than 5 cm) rather than focal.