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The association between ABO blood groups and Achilles tendon (AT) ruptures was studied in 215 consecutive AT rupture patients treated at Oulu University Hospital during the 16-year period from 1979 to 1994 as compared with control material consisting of earlier blood group determinations performed on an unselected sample of 5,536 young Finnish male adults. There was no blood group O dominance or other statistical differences in ABO blood groups between the patients with AT rupture and the control population (chi 2 3.79, P = 0.28), the A/O ratio being 1.82 in the rupture group and 1.42 in the controls. We found no blood group O dominance in competitive athletes, recreational athletes or non-athletes, in patients with sports-related AT ruptures or non-sports-related ruptures and in younger (45 years) or older (or = 45--years) patients. In conclusion, our results do not confirm early findings of blood group O dominance in patients with AT rupture.

In this report 670 operations, performed in 643 patients were analyzed. The indication for the surgery was a chronic symptomatic overuse injury caused by sports and physical activity. 552 (82.4%) of the operations were performed in men and 118 (17.6%) in women. The mean age of the patients was 24 years. Almost 90 per cent of the patients had presented following competitive sports and ten per cent recreational sports. More than 91 per cent of the operations were performed for lower extremity problems. The knee, foot and ankle regions needed surgical treatment most often in this series. Tendon and tendon sheath operations formed the majority (32%) of the operations. Chronic Achilles tendon problems (159) formed the biggest group of the diagnoses. Chronic overuse injuries do not respond always to conservative treatment. Surgery is often needed in the final stage of an overuse injury. The results of these operations are good.

We present our experience with surgical treatment of unresolved, painful, late Osgood-Schlatter disease.In 70 operations performed in 67 patients (in three bilaterally) an ossicle under the distal patellar tendon was removed in 62 cases. In eight cases, excision of the prominent tibial tubercle and/or drilling of the epiphysis was performed. Additional procedures, such as rasping of the uneven anterior tibial surface, excision of inflammed bursa or the devitalized portion of the tendon, were done 21 times. Most patients were athletes or physically active young people. The mean age was 19.6 years. 54 operations were done on males and 16 on females. They had been followed preoperatively for 18 months and after surgery 2.2 years.The final results were excellent or good in 56, moderate in 9, poor in 3 and unknown in 2 cases.Osgood-Schlatter's disease may leave an ossicle under the distal patellar tendon, a prominent tibial tubercle or an uneven surface of anterior superior tibia. These may lead to pain and disability due to recurrent injuries or athletic exercises. Surgical treatment gives good results in chronic unresolved cases.