Instability after total hip arthroplasty

Table 1 Risk factors for instability following total hip arthroplasty

Patient factors	Surgical factors
Female gender	Surgical approach
Age > 80 yr	Capsular repair
Neuromuscular disorders	Soft tissue tension
Cognitive disorders	Component malpositioning
Alcoholism	Femoral head size
Abductor weakness	Impingement
Prior hip surgery	Surgeon experience