EpistemisObjective joint instability
Specialty: Musculoskeletal.
Why it occurs
- Chronic insufficiency or rupture of stabilizing ligaments (e.g., anterior cruciate ligament of the knee, talofibular ligaments of the ankle)
- Anatomical joint dysplasia or deformities of the joint axis
- Repetitive microtrauma in pivoting sports activities
- Laxity of the joint capsule after previous traumatic dislocation
- Systemic collagen diseases (Ehlers-Danlos syndrome, Marfan syndrome)
- Neuromuscular or proprioceptive dysfunction of the extremity
Initial workup
Clinical anterior/posterior drawer provocation tests, Lachman, Pivot-Shift | Joint MRI (evaluates integrity of ligaments, menisci and cartilage) | Dynamic x-rays under assisted tension of the affected joint.
red flags
Sensation of massive instability accompanied by recurrent episodes of spontaneous acute joint blockage or swelling after minimal turns, with inability to normal ambulation without support orthoses.
Standard management
- Etoricoxib — 90 mg once a day orally, indicated intermittently for episodes of reactive synovitis due to joint failure
- Paracetamol (1 g every 12 hours orally as a preventive analgesic during the proprioceptive rehabilitation period).
Educational guidance for study. It is NOT a prescription recommendation. The actual choice depends on the cause, the patient, and current guidelines.
- Area
- Musculoskeletal
- Listed causes
- 6
- Treatment options
- 2