J Korean Orthop Assoc.  2003 Dec;38(7):753-756.

Effect of a Limited Range of Motion of the Hip Joint on Final Outcome in LCP Disease

  • 1Department of Orthopaedic Surgery, College of Medicine, Pusan National University, Busan, Korea. kimht@pusan.ac.kr
  • 2Department of Orthopaedic Surgery, Texas Scottish Rite Hospital for Children, Dallas, USA.


We studied the effect of a limited range of motion (ROM) of the hip joint on the final outcome in LCP disease. MATERIALS AND METHODS: ROM data obtained during the initial 3 years after diagnosis in unilaterally involved 325 pillar B or C hips (bone age> or =6 years, average age at induction: 7.9 years) were studied. The non-surgical treatment group included: a) no treatment (23), b) brace (113), and c) ROM exercise (70). The surgical treatment group included: a) femoral osteotomy (49), and b) Salter innominate osteotomy (70). We assessed the relationship between the limited ROM and the Stulberg outcome. RESULTS: In the non-surgical treatment group, those patients who had never experienced limited motion below 110degrees or 100degrees of flexion, below 20degrees or 10degrees of abduction, and below 10degrees of adduction, were significantly associated with a good Stulberg outcome (p<0.05). Using these reduced ROM parameters in combination, as a single factor, outcome prediction was possible in 44% of cases. No correlation was found in surgically treated patients. CONCLUSION: Our results support that ROM is an important prognostic factor in the non-surgical treatment group. Surgical procedures seem to change the biomechanical status of the hip joint in Perthes disease, thereby affecting the ralationship between ROM and Stulberg outcome.


Legg-Calve-Perthes disease; Range of motion
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