Test on Lower Limb Kinematics During Daily Activities

Question 1: The study found that simultaneous hip internal rotation and adduction occurred in most participants during maximum hip flexion across various ADLs, which is a key risk factor for THA dislocation.

A. Ano

B. Ne

Explanation: The study specifically states that "The results in Table 3 show no tasks in which internal rotation/adduction occurred simultaneously." It further clarifies that while it may have occurred in some participants, "the number of participants with simultaneous internal rota- tion/adduction was small." Therefore, it did not occur in most participants.

Question 2: According to the provided study, what is the primary utility of obtaining lower limb joint angle data from healthy individuals during activities of daily living (ADLs)?

A. To establish a baseline for analyzing mobility problems in patients with restricted range of motion and to offer objective ADL guidance.

B. To directly measure the risk of hip dislocation in patients who have undergone total hip arthroplasty.

C. To identify all specific motions that simultaneously cause excessive hip flexion, internal rotation, and adduction in healthy individuals.

D. To determine the maximum knee flexion angles necessary for successful athletic performance in healthy adults.

Explanation: The study's objective is 'To analyze the problems of patients who struggle with activities of daily living (ADL) due to restricted range of motion and to provide ADL guidance based on objective data.' The conclusion reinforces this, stating that the results 'can provide important objective data for ADL guidance for total hip arthroplasty and femoroacetabular impingement patients.' Additionally, the text states, 'The information from healthy individuals obtained in this study can serve as reference data to analyze problems of patients with various diseases that result in restricted ROM.'

Question 3: The joint angle measurement tasks in the study primarily focused on activities such as walking, standing up, and climbing stairs.

A. Ano

B. Ne

Explanation: The study measured joint angles during 22 tasks mimicking dressing, using a toilet, bathing, picking up objects, and trunk rotation during crouching. It states that these ADLs can require larger joint angles than those encountered during walking, standing up, and climbing stairs, implying a focus beyond those common activities.

Question 4: According to the study materials, which of the following activities of daily living (ADLs) can be hindered by restricted range of motion (ROM) in the lower limb joints?

A. Walking

B. Standing up

C. Driving a car

D. Tying shoelaces

Explanation: The study materials state that restricted ROM of the lower limb joints hinders the performance of ADLs such as walking, standing up, and climbing stairs. Patients may also have difficulty with activities such as dressing, using the toilet, bathing, picking up objects, crouching, tying shoelaces, and clipping toenails. Driving a car is not mentioned in the provided text as an ADL hindered by restricted lower limb ROM.

Question 5: The largest mean maximum hip adduction angle measured across all tasks was 14 degrees.

A. Ano

B. Ne

Explanation: The study materials state that the largest mean maximum angle for hip adduction was 17° for task 4, putting on shoes (knee).