Case Study: Managing a Volar Radio Ulnar Ligament Tear.

Case Study: Management of Volar Radioulnar Ligament Tear.

Introduction: In high-impact sports like basketball, wrist injuries are common due to the dynamic movements and falls often experienced during play. One such injury is a volar radioulnar ligament tear, which can severely impact an athlete’s performance if not managed properly. This case study explores the clinical presentation, diagnosis, and comprehensive management of a 17-year-old male basketball player with this injury.

Clinical Presentation

The patient, a 17-year-old male basketball player, sustained an injury following a fall on an outstretched hand, compounded by another player landing on his wrist. The trauma led to immediate pain and swelling localized over the distal end of the ulna. He reported to the clinic three days later, with increasing discomfort, particularly during pronation and supination of the wrist, as well as a noticeable decrease in grip strength.

Physical Examination:

1. Tenderness over the volar aspect of the wrist with swelling.

2. Limited range of motion due to pain, particularly in wrist pronation and supination.

3. Weak grip strength.

Imaging study:

X-ray revealed indirect signs of  instability, which may indicate ligament damage:

Widening of the DRUJ: A widened distal radioulnar joint (DRUJ) space on the posteroanterior (PA) view may suggests a ligament tear.

Joint Misalignment: On lateral X-ray views, subtle dorsal or volar subluxation of the ulna relative to the radius can point toward DRUJ instability, often a result of ligament disruption.

Diagnosis

The patient was diagnosed with a volar radioulnar ligament tear, which is a key stabilizer of the distal radioulnar joint (DRUJ). This injury is typically associated with distal radioulnar joint instability and can significantly impair wrist function.

Differential Diagnosis: 

Associated Injuries/concomitant injuries such as tears of the triangular fibrocartilage complex (TFCC), which are often present in cases of distal radioulnar ligament injury.

Treatment Plan

A. Conservative Management

In the absence of severe instability or displacement, conservative management was the primary treatment approach:

1. Immobilization: The patient was placed in a wrist brace to limit movement and allow the ligament to heal. This brace provided support while protecting the wrist from further damage.

2. NSAIDs: Non-Steroidal Anti-Inflammatory Drugs were prescribed to control pain and reduce inflammation during the acute phase of injury.

3. Activity Modification: The patient was advised to avoid any activities that placed stress on the wrist, including basketball, weightlifting, and other sports. Rest was emphasized to allow optimal healing.

B. Physical Therapy

Once the acute symptoms began to subside, a physical therapy regimen was initiated to restore wrist function and strength. The key components included:

1. Transcutaneous Electrical Nerve Stimulation (TENS): TENS therapy was applied to the wrist to alleviate pain and stimulate the surrounding muscles. This modality helped reduce discomfort over the extensor carpi ulnaris (ECU) tendon and supported the healing process.

2. Grip Strength Exercises: Given the patient's reduced grip strength, progressive grip strengthening exercises were incorporated into his rehabilitation. These exercises were performed with hand grippers and other resistance tools, allowing the patient to gradually restore function and endurance.

3. Range of Motion (ROM) Exercises: To prevent joint stiffness and promote mobility, gentle ROM exercises were introduced as pain permitted. These exercises focused on both pronation and supination movements, with careful monitoring to avoid overstraining the healing ligament.

Progress and Outcome

After 28 days of conservative management, the patient reported significant improvements:

Pain reduction: Pain levels had dramatically decreased, and the swelling had largely resolved.

Improved stability: The wrist showed increased stability during movement, a key indicator of recovery.

Increased range of motion: The patient regained much of his wrist mobility, particularly in pronation and supination, which were limited at the time of initial assessment.

Grip strength: Marked improvement in grip strength was noted, allowing the patient to perform daily activities with greater ease.

The patient’s progress was closely monitored, and at this stage, we began discussing a gradual return to play. The focus moving forward will be on continued wrist protection through bracing and targeted strengthening exercises to ensure long-term stability and prevent re-injury.

Long-Term Considerations

As the patient transitions back to sport, the following long-term strategies will be implemented:

1. Continued Strengthening: Even after returning to basketball, ongoing wrist and forearm strengthening exercises will be crucial to support the joint and reduce the risk of recurrence. Exercises such as wrist curls, forearm pronation/supination with resistance, and grip strengthening will be integrated into his routine.

2. Proprioception and Neuromuscular Training: Incorporating proprioceptive exercises to improve joint awareness and reflexes will help enhance wrist stability during high-impact movements. This can include balance drills and using tools like a wobble board to challenge wrist stability.

3. Gradual Return to Sport: The patient will follow a structured return-to-sport protocol, progressively increasing the intensity of basketball-specific drills while maintaining close monitoring of his wrist function. Bracing will continue during early phases of his return to play.

Discussion

Volar radioulnar ligament tears are not very common, Particularly in a sports like basketball, where falls and wrist trauma are frequent. This ligament is a crucial component of the distal radioulnar joint, and its injury can lead to instability, limiting an athlete's ability to perform.

Recent studies indicate that conservative management is often effective in isolated volar radioulnar ligament injuries, especially in the absence of severe instability. Immobilization, coupled with a structured rehabilitation program, can yield favorable outcomes, as seen in this case. Surgical intervention is reserved for cases where conservative measures fail or when there is significant joint instability.

References

1. Garcia-Elias, M., & Lluch, A. (2022). Distal Radioulnar Joint Instability: Diagnosis and Treatment. Journal of Hand Surgery, 47(2), 243-252.

2. Grawe, B., et al. (2023). Management of Ligamentous Wrist Injuries in Athletes: A Consensus Guide. Journal of Sports Medicine and Arthroscopy Review, 31(3), 156-168.

3. Wolfe, S.W. (2021). Wrist Injuries in Athletes: Diagnosis, Management, and Rehabilitation. American Journal of Sports Medicine, 49(12), 3235-3246.