Arthroscopic debridement of the extensor carpi radialis brevis for recalcitrant lateral epicondylitis.

HYPOTHESIS: Lateral epicondylitis usually responds well to nonoperative management. A limited number of refractory cases may require surgical intervention. The objective of this study was to assess the outcome of arthroscopic release of the extensor carpi radialis brevis (ECRB) tendon in a consecutive series of patients. MATERIALS AND METHODS: A retrospective review of 36 patients with lateral epicondylitis treated surgically between January 2001 and January 2004 was performed. There were 24 men and 12 women averaging 42 years at the time of surgery. In all patients, nonoperative management failed, and they underwent surgery at a mean of 19 months after the onset of symptoms. An arthroscopic release of the ECRB was performed. Data collection was performed by an independent examiner. RESULTS: Operative findings included 28% of patients with significant intra-articular synovitis and 36% with a Baker type 1 lesion, 39% with a type 2 lesion, and 25% with a type 3 lesion. At a mean follow-up of 3.5 years, the mean Mayo Clinic elbow score was 11.1 (range, 5 to 12). By use of visual analog scales, pain improved from 1.5 +/- 1.3 preoperatively to 8.1 +/- 2.4 at follow-up (P < .01). Of the patients, 10 (31%) reported mild pain with strenuous activities and 2 (6%) received no benefit from the procedure. Patients required a mean of 3.8 weeks to return to regular activities and 7 weeks to return to full work duties. No serious complications were identified. CONCLUSIONS: Arthroscopic release of the ECRB is a viable option for recalcitrant lateral epicondylitis. This procedure appears to be safe and effective and allows for management of associated intra-articular pathology.

Medial patellofemoral ligament reconstruction: a novel approach.

Recurrent patellar instability is common, and multiple procedures have been described for its treatment. Medial patellofemoral ligament reconstruction can be successful in patients who have an incompetent medial patellofemoral ligament or who have failed medial patellofemoral ligament repair and present with recurrent patellar instability. This article describes a novel approach to medial patellofemoral ligament reconstruction using a folded hamstring allograft with a new knotless suture anchor and bio-interference screw fixation. The principal advantage of this construct is the ability to definitively fix the medial patellofemoral ligament soft-tissue graft on the femur and provisionally fix the graft to the patella while assessing for reasonable medial patellofemoral ligament isometry throughout the arc of knee motion.

Arthroscopic rotator cuff repairs: an anatomic and biomechanical rationale for different suture-anchor repair configurations.

The goal of rotator cuff repairs is to achieve high initial fixation strength, minimize gap formation, maintain mechanical stability under cyclic loading, and optimize the biology of the tendon-bone interface until the cuff heals biologically to the bone. We have seen an evolution in our approaches to fixing rotator cuff tears from open to mini-open to all arthroscopic. In our arthroscopic techniques, we have also seen a change in the types of anchors and sutures we use and our repair techniques including an evolution in techniques that include single row, double row, and, most recently, transosseous equivalent fixation. Single-row repairs are least successful in restoring the footprint of the rotator cuff and are most susceptible to gap formation. Double-row repairs have an improved load to failure and minimal gap formation. Transosseous equivalent repairs have the highest ultimate load and resistance to shear and rotational forces and the lowest gap formation. This review will discuss the anatomy and biomechanics of a normal rotator cuff, the biomechanical factors that play a role in rotator cuff repairs, the initial fixation repair mechanics, and finally propose an algorithm for rotator cuff fixation based on tissue quality and tear configuration.

The subscapularis footprint: an anatomic study of the subscapularis tendon insertion.

PURPOSE: Arthroscopic repair of the subscapularis tendon has become more prevalent in recent years. Tears of the subscapularis insertion can be measured arthroscopically when the size of the average subscapularis tendon insertion is known. This anatomic study was performed to measure the dimensions and describe the anatomy of the subscapularis footprint. METHODS: A total of 6 male and 6 female shoulders were dissected down to the insertion of the subscapularis tendon. The insertion was demarcated, the tendon was detached, and the dimensions of the insertion site were measured. RESULTS: The footprint is the insertion of the subscapularis tendon onto the lesser tubercle. The shape of the footprint was characterized as resembling a human ear. The insertion is broad proximally and tapered distally and has a straight medial border that is almost parallel to the longitudinal axis of the humerus. The total average cephalocaudal height of the footprint was 25.8 mm (+/-3.2 mm). The total average width was 18.1 mm (+/-1.6 mm). Average male cephalocaudal height was 26.7 mm (range, 22 to 32 mm), and width was 18.3 mm (range, 16 to 21 mm). Average female cephalocaudal height was 24.8 mm (range, 22 to 29 mm), and width was 17.8 mm (range, 15 to 19 mm). Although the male footprint was slightly larger than the female footprint, differences were not statistically significant (P = .18 and .31 for height and width, respectively). CONCLUSIONS: An anatomic study was performed to determine the size of the footprint of the subscapularis tendon. We found that the average cephalocaudal height of the footprint was 25.8 mm, and the average width was 18.1 mm. CLINICAL RELEVANCE: Subscapularis tears are now more frequently addressed arthroscopically. This anatomic study was performed to characterize the anatomy of the subscapularis footprint so that the surgeon can achieve a more anatomic repair.