The American journal of sports medicine
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We performed a prospective study of 46 patients with ruptures of the anterior cruciate ligament and medial ligamentous structures. All patients had anterior cruciate ligament allograft reconstructions. Group I comprised 34 patients in whom all of the medial structures were ruptured (parallel and oblique fibers of the superficial medial collateral ligament and the posteromedial capsule) and were treated operatively. ⋯ No patient had more than 2 mm of increase on valgus stress testing at 5 degrees or 25 degrees of knee flexion. The overall ratings were as follows: Group I, 20 knees (58%) excellent or good and 14 knees (42%) fair or poor; and Group II, 11 knees (91%) excellent or good and one knee (9%) fair. Knee motion complications and patellofemoral symptoms were common in the patients rated fair or poor in Group I.
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Comparative Study
Lateral traction during shoulder arthroscopy: its effect on tissue perfusion measured by pulse oximetry.
We studied the effect of three methods of shoulder traction during arthroscopy on arterial oxygen saturation measured by a pulse oximeter applied to the fingertip of the arm in traction. Simple longitudinal traction ablated the oxygen saturation in only 1 of 30 patients. ⋯ In this series, the pulse oximeter did not demonstrate gradual gradations in arterial oxygen saturation loss. Rather, the pulse oximeter provided an all-or-none warning signal for tissue hypoxia.