Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association
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Posterolateral knee dislocation is a small subset of knee dislocations. Irreducible posterolateral dislocation has been reported and is caused by buttonholing of the medial femoral condyle into the anteromedial knee capsule, with interposition of the medial retinacular structures between the femoral and tibial condyles. Open reduction has been advocated to reduce the knee. ⋯ The first stage included arthroscopic debridement of the intervening tissues, which were thickened and resembled meniscal tissue, followed by reduction of the knee and open MCL repair to maintain the reduction. The second stage was done for ACL and PCL reconstruction. In conclusion we bring the attention of the surgeon to the clinical, radiographic, and MRI findings associated with this chronic irreducible posterolateral knee dislocation.
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Comparative Study
A comparison of risk between the lateral decubitus and the beach-chair position when establishing an anteroinferior shoulder portal: a cadaveric study.
The purpose of this study was to assess, using a technique that minimally distorts the normal anatomy, the risk of injury when establishing a 5 o'clock shoulder portal in the lateral decubitus versus beach-chair position. ⋯ Inserting anchor devices orthogonally would permit stronger fixation but presents the risk of damaging neurovascular structures. This study focused on showing the neurovascular risk of performing full orthogonal insertion. Considering the good results reported with the usual superior-anterior portals, we do not recommend performing a transubscapular portal in routine shoulder arthroscopy.
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Comparative Study
Patient perceptions of open and arthroscopic shoulder surgery.
There has been a significant increase in surgeon as well as patient interest in arthroscopic treatment of shoulder pathology. We hypothesize that patients have a strong preference for arthroscopic shoulder surgery. Currently, there are no data in the literature reporting on how people perceive open versus arthroscopic shoulder surgery. ⋯ Shoulder surgeons should be aware of these perceptions when discussing treatment options with patients. A continued effort should be made to emphasize known scientific data when considering the relative risks and benefits of arthroscopic and open shoulder surgery.
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Comparative Study
Cyclic load testing of biodegradable suture anchors containing 2 high-strength sutures.
The purpose of this study was to test 4 different biodegradable suture anchors threaded with 2 high-strength sutures under cyclic loading conditions in humeral cadaveric specimens divided into 2 different age groups. ⋯ Rotator cuff anchors perform differently in younger humeral bone than in older humeral bone. Most displacement with cyclic loading occurring between the anchor and bone takes place in the first 100 cycles. Anchors in older bones can be expected to fail at lower loads.
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We prospectively assessed 22 consecutively treated patients to determine the effectiveness and safety of arthroscopically assisted posterior cruciate ligament (PCL) reconstruction by using a quadriceps tendon autograft. ⋯ Level IV, therapeutic study.