The current trial compared patient education before total hip arthroplasty with the usual verbal information. A randomized, controlled 24-month prospective single-center study was done. Patients scheduled for a first elective total hip arthroplasty for primary hip osteoarthritis were enrolled. All patients were given the usual information and an information leaflet and completed a self-evaluation questionnaire (Spielberger State and Trait Anxiety Inventory). The patients were assigned randomly to two groups: Group 1 attended a collective multidisciplinary information session 2 to 6 weeks before surgery and the control group did not attend. All patients completed another State Anxiety Inventory just before surgery and then 1 and 7 days after surgery. One hundred patients were randomized. Forty-eight attended the collective information session. Patients receiving education were significantly less anxious just before surgery than patients in the control group, in linear regression after adjustment for gender, trait and state anxiety at baseline, depression score, and health assessment questionnaire score. They experienced less pain before surgery and were able to stand sooner. However, the trend toward lower anxiety scores was not statistically significant after surgery. Patient education decreases preoperative anxiety and pain in patients having hip surgery.

These results support earlier data indicating that osteoarthritis consistently develops in patients with pigmented villonodular synovitis of the hip. Complete synovectomy seems to be effective in preventing recurrence of the synovitis, but it does not appear to prevent the development of secondary osteoarthritis.

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We studied the perioperative blood loss in 100 total hip arthroplasties performed for rapidly destructive coxarthrosis and compared it with the blood loss in 100 total hip arthroplasties for regular coxarthrosis. The treatment protocol was identical in both groups. Total blood loss was calculated as the compensated blood loss (volume transfused during and immediately after surgery) and the non-compensated blood loss using Nadler and Mercuriali formula. The mean blood loss calculated in milliliters of red blood cells (100% haematocrit) was 578 ml in regular coxarthrosis and 945 ml in rapidly destructive coxarthrosis. The blood loss after total hip arthroplasty is greater when surgery is performed for rapidly destructive coxarthrosis than for regular coxarthrosis (P<0.001).Résumé Nous avons étudié la perte sanguine dans 100 arthroplasties totales de hanche exécutées pour coxarthrose destructrice rapide et l'avons comparé avec la perte sanguine dans 100 arthroplasties pour coxarthrose habituelle. Le protocole du traitement était identique dans les deux groupes. La perte sanguine totale a été calculée comme la perte sanguine compensée (le volume à transfuser pendant et immédiatement après chirurgie) et la perte sanguine non -compensée en utilisant la formule de Nadler et Mercuriali. La perte moyenne, calculé en ml de cellules de sang rouge (100% d'hématocrite) était de 578 ml dans la coxarthrose habituelle et de 945 ml dans la coxarthrose destructrice rapide. La perte sanguine après arthroplastie de hanche est plus importante quand la chirurgie est exécutée pour coxarthrose destructrice rapide que pour coxarthrose habituelle (P<0.001).