다리길이 차이(leg-length discrepancy, LLD)는 운동선수에서 일반인에게 이르기까지 다양한 양상으로 나타난다(조용훈 등, 2008; Gurney, 2002; Knutson, 2005). LLD는 골절 및 수술적 중재, 선천적인 장애, 퇴행성 관절질환, 감염, 신생물(neoplasm) 등이 구조적으로 변화를 유발한 실제 다리길이 차이(true leg-length discrepancy)와 잘못된 자세와 이에 따른 보상성 변화로 유발된 기능적 다리길이 차이(functional leg-length discrepancy)로 구분한다(대한정형도수치료학회, 2010; 정영종, 2002; Austin, 2000; Sabharwal & Kumar, 2008). LLD는 6 mm에서부터 임상적 의미를 갖지만(Holmes et al., 1993), 치료에 대한 기준은 명확하지 않다(Hanada et al., 2001; Golightly & Tate et al., 2007). LLD에 대한 국내연구도 LLD에 의한 영향을 평가한 것이 대부분이고(박종향 등, 2015; 조아라 등, 2014), 도수치료를 적용한 경우도 이연교와 심제명(2015)이 카이로프랙틱기술인 Thompson Drop Table Technique을 적용한 것이 유일하다.
Leg-Length Discrepancy (LLD) originates as compensation for bad posture and muscle weakness. LLD is best know to the public as a symptom that occurs in athletes. Unfortunately, the standard of clinical interventions remains limited. Patients with LLD develop compensatory mechanisms to minimize functional problems caused by the LLD. However this results in kinematic alterations in the lower limbs and pelvis which cause abnormal adaptation. This abnormal adaptation causes pain or injury in muscle and soft tissue thus creating an abnormal gait or unbalancing of the body. The purpose of this study was to identify the iliopsoas muscle’s relationship with LLD regarding Trigger Point Pressure Release Technique (TPPRT). Paired t-test was used to analyse the effects of TPPRT in the LLD group. After conducting the Trigger Point Pressure Release Technique as a form of physical therapy intervention, it was found that in cases of LLD, there was a significant difference (p<0.05). The intervention of the TPPRT resulted in a decrease of the LLD. In this study it is shown that the trigger points of the iliopsoas muscle can produce an imbalanced body, resulting in LLD which causes low back pain. In addition, the study’s results demonstrate the potency of the curative effect of TPPRT.
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