Ankle sprains are one of the most common musculoskeletal injuries encountered in clinical practice and are often managed conservatively with good outcomes. However, a subset of patients will go on to experience persistent symptoms, instability, or may have sustained a more significant injury that is initially missed. Recognising when to escalate beyond initial management is key to preventing chronic dysfunction.
Most ankle sprains involve the lateral ligament complex and occur following an inversion injury. While many patients recover with appropriate rehabilitation, some continue to report pain, swelling, or a sense of instability. It is important to consider that not all ankle sprains are equal. Associated injuries such as syndesmotic injury, osteochondral lesions, peroneal tendon pathology, or occult fractures may not be immediately apparent and can contribute to ongoing symptoms.
Initial management should focus on early load management, functional rehabilitation, and progressive return to activity. Physiotherapy plays a central role in restoring strength, proprioception, and dynamic stability. Podiatry may support assessment of underlying biomechanical factors and advise on footwear or simple orthotic interventions where appropriate. In cases where mechanical instability or abnormal loading persists, orthotists can provide more specialised orthotic solutions aimed at improving stability and reducing strain on the injured structures.
Referral should be considered where symptoms fail to improve as expected, typically beyond the early recovery phase, or where patients report recurrent sprains, ongoing instability, or inability to return to previous levels of activity. Clinical features such as persistent swelling, joint line pain, or mechanical symptoms should raise suspicion of more complex pathology.
Imaging may be required to further evaluate the injury. While initial radiographs may be useful to exclude fracture, MRI is often indicated in cases of persistent symptoms to assess for ligamentous injury, osteochondral defects, or tendon pathology. Ultrasound can also be useful in evaluating dynamic tendon issues and lateral ligament integrity in experienced hands.
Multidisciplinary team (MDT) input is particularly valuable in managing more complex or persistent ankle injuries. Collaboration between physiotherapy, podiatry, orthotics, radiology, and orthopaedic surgery allows for a more comprehensive assessment and a coordinated management plan, particularly in cases where multiple contributing factors are present.
Referral for specialist opinion should be considered where there is diagnostic uncertainty, failure of conservative management, or suspicion of structural injury. In cases of chronic instability or significant intra-articular pathology, surgical intervention may be required to restore stability and function.
For clinicians, recognising when an ankle sprain is not following the expected recovery pathway is critical to avoiding prolonged symptoms and recurrent injury. For patients, timely referral ensures access to appropriate investigation and a structured, multidisciplinary approach to care, supporting a more complete and sustained recovery.
