Research Study

Interference Screw Fixation Versus All-Inside Suspensory Fixation Method Comparing Radiographic Tunnel Widening in Anatomic Single Bundle Anterior Cruciate Ligament (ACL) Reconstruction
Principal Investigator 
Patrick Chin


Body Locations and Systems 
Diagnosis and Therapy 
Surgery and Rehabilitation 
Closed for Recruitment
Study Start/End 
Dec 17, 2012 to Nov 8, 2018
UBC Hospital
Gurpal Athwal, Research Coordinator
Purpose of Study 

The purpose of this study is to evaluate the incidence and degree of bone tunnel widening between two groups who have undergone anterior cruciate ligament reconstructive surgery. The two groups have undergone different graft fixation methods: an interference screw/suspensory button fixation hybrid technique, and an all-inside suspensory method fixation. Tunnels are created at the time of surgery for graft placement and fixation, but have been known to enlarge post-operatively. Little has been studied on the relatively new all-inside technique. X-rays of the operative knee will be used to assess tunnel width. Secondary outcomes will include clinical evaluation and outcome scoring questionnaires.


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