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        "left_ankle": [
          -0.0816638320684433,
          -0.09170067310333252,
          -0.13382509350776672
        ],
        "right_ankle": [
          0.04455561190843582,
          -0.10992515087127686,
          0.1988981068134308
        ],
        "left_heel": [
          -0.07610171288251877,
          -0.06478674709796906,
          -0.18359355628490448
        ],
        "right_heel": [
          0.036948684602975845,
          -0.059720899909734726,
          0.16646988689899445
        ]
      },
      "rooted_keypoints_3d": {
        "nose": [
          0.027974389493465424,
          -0.7014662325382233,
          0.07711417996324599
        ],
        "neck": [
          0.010713232681155205,
          -0.5582342445850372,
          -0.06140119559131563
        ],
        "left_shoulder": [
          -0.16156698390841484,
          -0.5111154615879059,
          -0.07807529694400728
        ],
        "right_shoulder": [
          0.16691846027970314,
          -0.5050163567066193,
          -0.11561067379079759
        ],
        "left_hip": [
          -0.07527336105704308,
          -0.0008265674114227295,
          -0.003674545558169484
        ],
        "right_hip": [
          0.07527336105704308,
          0.0008265674114227295,
          0.003674545558169484
        ],
        "left_knee": [
          -0.09309962019324303,
          0.4416506290435791,
          0.04158607148565352
        ],
        "right_knee": [
          0.06753922626376152,
          0.3821659982204437,
          0.2331800910178572
        ],
        "left_ankle": [
          -0.08102315291762352,
          0.813455194234848,
          -0.14271347201429307
        ],
        "right_ankle": [
          0.0451962910592556,
          0.7952307164669037,
          0.19000972830690444
        ],
        "left_heel": [
          -0.07546103373169899,
          0.8403691202402115,
          -0.19248193479143083
        ],
        "right_heel": [
          0.037589363753795624,
          0.8454349674284458,
          0.1575815083924681
        ]
      },
      "keypoints_2d": {
        "nose": [
          267.42559814453125,
          216.04800415039062
        ],
        "neck": [
          262.1532287597656,
          251.17796325683594
        ],
        "left_shoulder": [
          202.32521057128906,
          266.0752868652344
        ],
        "right_shoulder": [
          317.487548828125,
          265.0952453613281
        ],
        "left_hip": [
          233.05715942382812,
          443.7792663574219
        ],
        "right_hip": [
          283.6514892578125,
          444.3687438964844
        ],
        "left_knee": [
          227.59759521484375,
          590.1577758789062
        ],
        "right_knee": [
          278.8534240722656,
          562.0313110351562
        ],
        "left_ankle": [
          229.57386779785156,
          734.253173828125
        ],
        "right_ankle": [
          272.28350830078125,
          692.3958740234375
        ],
        "left_heel": [
          231.0062255859375,
          750.4562377929688
        ],
        "right_heel": [
          270.0938720703125,
          711.2581176757812
        ]
      },
      "metric_valid": {
        "left_knee": true,
        "right_knee": true,
        "left_ankle": true,
        "right_ankle": true,
        "left_heel": true,
        "right_heel": true
      }
    }
  ],
  "metrics": {
    "left_knee_angle_3d_deg": 136.39854885687976,
    "right_knee_angle_3d_deg": 131.0236184419814,
    "knee_angle_asymmetry_3d_deg": 5.374930414898358,
    "left_ankle_trajectory_3d": [
      0.8237761706113815,
      0.5558123588562012,
      0.8061502128839493,
      0.7373851239681244,
      0.813455194234848
    ],
    "right_ankle_trajectory_3d": [
      0.7881250381469727,
      0.7388953566551208,
      0.8215319588780403,
      0.5416433215141296,
      0.7952307164669037
    ],
    "left_heel_trajectory_3d": [
      0.8598560579121113,
      0.5403750836849213,
      0.8616024851799011,
      0.7851971983909607,
      0.8403691202402115
    ],
    "right_heel_trajectory_3d": [
      0.8290690928697586,
      0.7859771549701691,
      0.8406788408756256,
      0.5177512466907501,
      0.8454349674284458
    ],
    "ankle_vertical_asymmetry_3d": 0.011924825608730316,
    "heel_vertical_asymmetry_3d": 0.006456319242715836,
    "pelvis_lateral_range_3d": 0.0,
    "hip_drop_proxy_3d": 0.00958186388015747,
    "left_rearfoot_alignment_proxy_3d_deg": 30.06301031192989,
    "right_rearfoot_alignment_proxy_3d_deg": 33.75213906592931,
    "rearfoot_alignment_asymmetry_3d_deg": 3.689128753999423,
    "left_rearfoot_alignment_proxy_2d_deg": 22.949545810932452,
    "right_rearfoot_alignment_proxy_2d_deg": 38.74203525481984,
    "rearfoot_alignment_asymmetry_2d_deg": 15.792489443887387,
    "rearfoot_alignment_note": "Rear-view foot-angle proxy from visible heel and ankle alignment."
  },
  "coverage": {
    "sam3d_knee_metric_valid_coverage": 1.0,
    "sam3d_ankle_metric_valid_coverage": 1.0,
    "sam3d_heel_metric_valid_coverage": 1.0,
    "sam3d_rearfoot_metric_valid_coverage": 1.0
  },
  "note": "Video-derived movement summary from available outputs."
}