https://www.youtube.com/watch?v=cyXf5YbnJKs Artificial Hip Replacement Anterior Approach (Hip Arthroplasty)
https://www.youtube.com/watch?v=m8LDBlZN-XM Artificial Knee Replacement (Knee Arthroplasty) Animated Tutorial
https://www.youtube.com/watch?v=0qR-Yfw9fOI Lumbar Spine Anatomy Animated Tutorial
https://www.youtube.com/watch?v=RNUpMNd_u1U Cervical Spine Anatomy Animated Tutorial
https://www.youtube.com/watch?v=qlCvKEOZtpo Hip Anatomy Animated Tutorial
https://www.youtube.com/watch?v=_q-Jxj5sT0g Knee Anatomy Animated Tutorial