Haag M, Reichelt A
Arch Orthop Trauma Surg (1978). 1982;100(3):163-6. doi: 10.1007/BF00442728.
Between the years 1949 and 1968 75 children with unilateral idiopathic LCPD were treated nonoperatively in the Orthopedic University Clinic of Freiburg. In the follow-up 1981 the pelvic teardrop distances were determined and the quotient of the measurement's results of the sick and healthy sides were named "tear drop distance quotient" (TDDQ). We compared this TDDQ with the clinical and radiological end result.
1949年至1968年间，弗莱堡大学骨科诊所对75名单侧特发性股骨头骨骺缺血性坏死的儿童进行了非手术治疗。在1981年的随访中，测定了骨盆泪滴距离，并将患侧与健侧的测量结果的商命名为“泪滴距离商”（TDDQ）。我们将这个TDDQ与临床和放射学最终结果进行了比较。
